Saturday, February 17, 2024

SPACE

INSAT 3DS mission successful; naughty boy is now an obedient boy, says ISRO

 17 Feb 2024, 

On the launch of INSAT-3DS meteorological satellite, ISRO chairman S Somanath says “I am very happy to announce the successful accomplishment of the mission GSLV-F14 INSAT-3DS…”

Indian Space Research Organisation (ISRO) posted this photo on their X account as preparations underway for the launch of ISRO’s GSLV-F14/INSAT-3DS mission that is to be scheduled at 5.35 p.m on Feb 17, at the Satish Dhawan Space Station, in Sriharikota on Friday. (ISRO twitter)

The GSLV-F14 vehicle successfully placed the INSAT-3DS satellite into intended orbit, the Indian Space Research Organisation (ISRO) said on Saturday. A Geosynchronous Launch Vehicle carrying a third generation meteorological satellite lifted-off from the spaceport in Andhra Pradesh's Sriharikota on Saturday.

"GSLV-F14/INSAT-3DS Mission: The vehicle has successfully placed the satellite into the intended geosynchronous transfer orbit," the ISRO tweeted.

The INSAT-3DS Satellite is a follow-on mission of Third Generation Meteorological Satellite from Geostationary Orbit. This is the second mission for the ISRO in 2024 after the successful launch of PSLV-C58/EXPOSAT mission on January 1.

On the launch of INSAT-3DS meteorological satellite, ISRO chairman S Somanath said, "I am very happy to announce the successful accomplishment of the mission GSLV-F14 INSAT-3DS. The spacecraft has been injected into a very good orbit. We also noted that the vehicle has performed very well. Congratulations to everyone who has been a part of the team..."

Meanwhile, INSAT-3DS Mission Director Tomy Joseph said, “…naughty boy (ISRO’s GSLV-F14 rocket) has now become a mature, disciplined and obedient boy."

"I congratulate and salute all the ISRO ‘family’ members for this achievement. This is GSLV’s tenth mission, and the payload has been increased by almost 50 kilograms this time. I am grateful to higher management and ISRO chairman for the opportunity (of leading the mission)," Joseph said.


The 51.7 metre tall GSLV-F14 soared majestically from the second launch pad at the spaceport, leaving behind thick fumes on its tail and soared towards the sky. It saw thunderous applause from spectators who had gathered at the gallery here since afternoon.

The satellite weighing 2,274 kg would serve various departments under the Ministry of Earth Sciences including the Indian Meteorological Department (IMD), ISRO said.

INSAT-3DS satellite: Aim and objective

Somnath said INSAT 3DS is the next generation weather satellite with improved capability over the existing INSAT series which is there in orbit. "This will augment the capability of various atmospheric parameters that leads to information related to weather and climate," he added.

The new satellite, equipped with cutting-edge payloads and top-notch data collection, will aid in monitoring land and ocean surfaces for near-precise weather forecasting and disaster warnings.

The primary objectives of the mission are to monitor Earth's surface, carry out oceanic observations and its environment in various spectral channels of meteorological importance -- to provide the vertical profile of various meteorological parameters of the Atmosphere.

Among others, it will provide the Data Collection and Data Dissemination capabilities from the Data Collection Platforms (DCPs), and to provide Satellite Aided Search and Rescue services.

"This particular satellite will be doing a lot of advanced research and helping for the weather forecast of our country...," said Debanik Roy, senior Scientist and Group Head, Division of Remote Handling and Robotics, Bhabha Atomic Research Centre, Department of Atomic Energy, Mumbai.

NASA has more than twice the asteroid Bennu samples it could have hoped for from OSIRIS-REx probe

By Josh Dinner 

The once inaccessible sample container has been fully opened, and NASA has released the numbers


View of the OSIRIS-REx Touch-and-Go-Sample-Acquisition-Mechanism (TAGSAM) head with lid removed, unveiling the bulk of asteroid Bennu sample inside. 
(Image credit: NASA/Erika Blumenfeld/Joseph Aebersold)

We now know exactly how much material OSIRIS-REx captured from its target asteroid Bennu — and, it's a lot.

In addition to the 2.48 ounces (70.3 grams) of sample already collected from the outside of the canister, NASA has finally managed to fully open OSIRIS-REx's sample container to find another 1.81 ounces (51.2 grams) of asteroid Bennu within. In all, the probe collected more than twice what scientists had hoped for.

OSIRIS-REx completed its asteroid sample return mission when the probe parachuted a tightly-sealed container back to Earth on Sep. 24 before embarking on a secondary mission dubbed OSIRIS-APEX, named for its next space rock target, the asteroid Apophis.

With this container came the first pieces of an asteroid NASA has ever captured and returned for further study. The mission launched in 2016, and the safe recovery of the capsule last year was the ceremonious end to an epic seven-year journey through space. However, once NASA technicians got a hold of the sample container, they stumbled upon some complications — it was too difficult to open.

Related: Asteroid Bennu may 'a fragment of an ancient ocean world,' samples suggest

OSIRIS-REx's original mission goal was to collect up to 2.12 ounces (60 grams) of material, which was actually met with even just bits of Bennu spotted across the container's exterior. However, the team knew there had to be much more inside.

So, in order to access the entirety of the Bennu sample, NASA teams started designing a new tool to open the sealed container.

To talk specifics, the container was actually secured inside a larger enclosure, built for protection during the probe's arduous journey. As OSIRIS-REx collected its asteroid samples in space, a portion of the material wound up inside this protective enclosure but outside the designated sample container, gifting scientists some of the Bennu sample before the main canister was unlocked.

Far exceeding their expectations, mission operators managed to collect 2.48 ounces (70.3 grams) before ever opening the inaccessible part of the OSIRIS-REx return capsule. Still, scientists and space enthusiasts everywhere remained waiting to see what OSIRIS-REx's grand sample total would be. And now, the new tool having been derived, scientists have access to all of the probe's asteroid sample, and the results are in.

Combined with the samples already collected, OSIRIS-REx returned a total of 4.29 ounces (121.6 grams) of material from asteroid Bennu — that's more than double the mission's goal and the largest asteroid sample ever collected, according to a recent NASA release. For comparison, the Japanese Aerospace Agency's Hayabusa2 mission only brought back about 0.18 ounces (5 grams) of material from its asteroid target, Ryugu, in Dec. 2020.

 —  At last! NASA finally frees lid of asteroid Bennu sample capsule after battling stuck fasteners

 — OSIRIS-APEX prepares for 1st close solar encounter on way to asteroid Apophis

— NASA's OSIRIS-REx lands samples of asteroid Bennu to Earth after historic 4-billion-mile journey

Examination of the samples has already begun, and scientists are finding "a whole realm of material" previously inaccessible using samples collected from meteorites, according to Dante Lauretta, principal investigator for OSIRIS-REx. Bennu is believed to be a remnant of the early solar system, and scientists think studying these samples could help unravel some mysteries of early planetary development.

About a quarter of the Bennu sample will remain with researchers on the OSIRIS-REx research team. NASA also plans to preserve at least 70 percent of the sample for study by scientists worldwide, as well as for future generations of researchers.



An astronomer's lament: SpaceX 'megaconstellations' are ruining space exploration for everyone

News
By Samantha Lawler
published about 19 hours ago
THE CONVERSATION

Private companies like SpaceX are crowding Earth's atmosphere with ever-increasing numbers of satellite 'megaconstellations'. For astronomers, the toll of these bright, ubiquitous objects is already painfully clear.

Telescopes have to contend with light pollution from satellites.

I used to love rocket launches when I was younger. During every launch, I imagined what it would feel like to be an astronaut sitting in the spacecraft, listening to that final countdown and then feeling multiple gees push me up through the atmosphere and away from our blue marble.

But as I learned more about the severe limitations of human spaceflight, I turned my attention to the oldest and most accessible form of space exploration: the science of astronomy.

Since 2019, I've watched my unencumbered enthusiasm for rocket launches soften to tepid interest, and finally sour to outright dread. The corporate space race, led by SpaceX, is entirely responsible for this transformation in my mindset.

I am worried by the complete shift to the move-fast-and-break-things attitude that comes from the tech sector instead of government scientific agencies. I am put off by the colonialist language and billionaire-worship of private corporations. I am increasingly furious at the nonexistent public education and lack of transparency offered by these companies.

Crowded orbits


The corporate space race is well underway, with private companies flooding Low Earth Orbit with thousands of mass-produced satellites. In previous decades, the prohibitively high cost of launch kept the rate of increase and total number of satellites from growing too rapidly. But launches have been getting steadily cheaper for years.

SpaceX has launched thousands of their own Starlink communication satellites, as well as hundreds of satellites for their direct competitors. Half of all launches worldwide in 2023 were SpaceX rockets.

As an astronomer, I'm painfully aware of what these thousands of new satellites have done to the night sky worldwide. They reflect sunlight long after the sky has grown dark, looking like moving stars.

Starlink satellites are the most numerous and occupy some of the lowest orbits, so they make up the majority of the satellites seen in the sky.

 



Last year, SpaceX launched one of the brightest objects in the sky on behalf of another company: BlueWalker 3, a satellite with the same sky-footprint as a small house. They plan to operate a fleet of dozens, each as bright as the brightest stars in the sky.
Lost information and knowledge

These satellites are now increasingly obstructing telescopic space exploration, both on the ground and in space. Astronomers are the canaries in the coal mine for this rapidly expanding experiment in orbit: we see these satellites increasingly affecting our research every day.

I have watched over the past five years as satellite streaks in my own research images from the Canada-France-Hawaii Telescope have changed from an unusual occurrence to lost data in nearly every image.

Astronomy is the only way to learn about the universe, the overwhelming majority of which can never be explored by humans. The farthest human-made object from Earth is the Voyager 1 probe, now eight times farther from the sun than Neptune after 46 years continuously travelling significantly faster than a speeding bullet.


A composite of 29 individual exposures from the Canada-France-Hawaii Telescope on Maunakea, taken in August 2022. The horizontal and diagonal white lines are bright satellites that unexpectedly flew through the field of view during observations, covering any objects behind them. (P. Cowan/W. Fraser/S. Lawler/CLASSY Survey Team/CFHT)


But even if Voyager 1 was pointed directly toward our nearest neighbouring star, Proxima Centauri (it's not), it would take over 100,000 years to get there. We are light-years away from having technology that can robotically explore even our neighbouring solar systems on a human timescale, let alone bring humans out to the stars.

The vast majority of astronomy research is carried out by telescopes on Earth: large optical telescopes on remote mountaintops, large radio telescopes in radio-quiet zones that are meticulously maintained, as well as smaller telescopes scattered around the world.

There are a handful of telescopes in Low Earth Orbit that also have to contend with light pollution from Starlink and other megaconstellations. There are also a handful of telescopes outside Earth orbit which can only operate for a few years, unlike ground-based facilities that can be maintained and enhanced with new technologies for decades.
Government regulation needed


The Canada-Hawaii-France telescope, located on the summit of Mauna Kea, a dormant volcano located on the island of Hawaii. 


Space exploration using Earth-based telescopes is growing increasingly less effective as more bright and radio-loud satellites are placed between Earth and the stars. But there are much worse problems ahead if corporations continue launching satellites: atmospheric pollution on launch and re-entry, ground casualty risks from re-entries, and the very real possibility of a runaway collisional cascade in orbit, referred to as the Kessler Syndrome.

Satellites are an incredibly useful part of our lives, but there are limits to how many can safely orbit Earth. Current regulations on launches and orbital operations by governments are very weak, and are not set up for the current regime of thousands of new satellites per year.

Regulation on the number of satellites in orbit would force corporations toward technology improvements and service models that use fewer satellites, keeping orbit usable for future generations.

Ask your government representatives to support satellite regulation, and expansion of rural broadband. Get out and enjoy your dark skies, before they change.


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Watch a Chinese rocket booster fall from space and explode near a house in southern China

With proper regulation, our oldest form of space exploration can continue. I desperately hope we never reach a point where the natural patterns in the sky are drowned out by anthropogenic ones, but without regulation, corporations will get us there soon.

This edited article is republished from The Conversation under a Creative Commons license. Read the original article.




UK Space Agency on red alert for doomed satellite crashing back down to Earth

Scientists from the UK Space Agency are on high alert as doomed satellite is set to come crashing down to Earth – and boffins say they have no idea where it will land


By Lizzie McAllister
Senior News Reporter
17 FEB 2024
The satellite could come crashing down to Earth next week (Image: ESA/SWNS)

The UK Space Agency is on high alert as a doomed satellite is set to crash back to Earth next week.

Scientists have no idea where the out-of-control European Remote Sensing 2 satellite (ERS-2) will land. The European Space Agency reckons it could re-enter the atmosphere on Wednesday (February 21) at 2.34am, but this prediction could be off by up to 31 hours either way

The UK Space Agency, which operates the country's re-entry warning service, has tasked its sensors to monitor ERS-2's re-entry. This government service scans for incoming threats and can issue a warning if an emergency situation arises.

READ MORE: Brits to have ashes blasted into space to orbit Earth before falling as snowflakes

Scientists have no idea where the doomed satellite will land (Image: ESA/SWNS)

The agency uses state-of-the-art modelling to track re-entering objects and issues warnings if a UK-licensed object is re-entering, or if the UK or our overseas territories or crown dependencies might be affected. These warnings are sent to civil protection authorities in the UK and to overseas government departments.

The re-entry service, along with the in-orbit collision and fragmentation service (known as the Space Surveillance and Tracking service), operates 365 days a year. Angus Stewart, the boss of Space Surveillance and Tracking at the UK Space Agency, said: "There are thousands of operational and defunct satellites in orbit around the Earth, and the ability to operate safely in space and bring the benefits back to Earth is growing increasingly challenging."

ERS-2's final image captured above Rome, Italy, in 2011 (Image: ESA/SWNS)

Talking about data from a partnership with satellite tracking company HEO, Mr Stewart said: "As well as capturing these images as part of our work with HEO, the UK Space Agency operates the UK's re-entry warning service and has tasked our UK sensors to observe the re-entry of ERS-2."

"We share data with ESA and other international partners through the Inter-Agency Space Debris Coordination Committee (IADC) and other forums to support satellite re-entries."

The European Space Agency is now monitoring ERS-2's path down to Earth
 (Image: ESA/SWNS)

Moon Race 2.0: Why so many nations and private companies are aiming for lunar landings

By Sue Nelson
Features correspondent
Getty Images

Five decades on from the last of the Apollo missions, the Moon is once again a target for space exploration. But Nasa no longer has lunar exploration to itself.

The number of astronauts who walked on the Moon hasn't changed in over 50 years.

Only 12 human beings have had this privilege – all Americans – but that will soon increase. The historical two-nation competition between the US and Soviet space agencies for lunar exploration has become a global pursuit. Launching missions to either orbit the Moon, or land on its surface, is now carried out by governments and commercial companies from Europe and the Middle East to the South Pacific.

Despite the success of the US Apollo missions between 1969-72, to date only five nations have landed on the Moon. China is one of the most ambitious of the nations with the Moon in its sights.

After two successful orbital missions in 2007 and 2010, China landed the unmanned Chang'e 3 in 2013. Six years later Chang'e 4 became the first mission to land on the far side of the Moon. The robotic Chang'e 5 returned lunar samples back to Earth in 2020 and Chang'e 6, which launches in May this year, will bring back the first samples from the Moon's far side.

The country's ambitions don't stop there. "China is openly aiming to put a pair of its astronauts on the Moon before 2030," says space journalist Andrew Jones, who focusses on China's space industry.

"There is demonstrable progress in a number of areas needed to perform such a mission, including developing a new human-rated launch vehicle, a new-generation crew spacecraft, a lunar lander and expanding ground stations," says Jones. "It is a tremendous undertaking, but China has demonstrated that it can plan and execute long-term lunar and human spaceflight endeavours."
After being delayed four times, the first Artemis mission lifted off in November 2022 – but Nasa has many rivals for a return to the Moon
 (Credit: Getty Images)

Not surprisingly, recently announced delays to US space agency Nasa's own Moon programme Artemis, which has pushed back plans to land astronauts on the lunar surface to September 2026 at the earliest, has produced the phrase "Moon Race" between the US and China.

"I think that China has a very aggressive plan," Nasa chief Bill Nelson told a media teleconference about the amended Artemis timescale. "I think they would like to land before us, because that might give them some PR coup. But the fact is, I don't think they will."

China, of course, may also experience slips in its launch schedule. "China needs a super heavy-lift launcher to start putting large pieces of infrastructure on the Moon," says Jones. "Its Long March 9 rocket project has undergone changes, so this may delay first missions from 2030 into the early or mid 2030s."

India became the fourth nation to land on the Moon with the unmanned Chandrayaan-3 in August 2023, which touched down close to the lunar south pole. After its success, the chairman of the Indian Space Research Organisation (ISRO) announced it aims to send astronauts to the Moon by 2040. (Find out more about the mysteries of the lunar south pole and why so many nations want to land there in this feature by Jonathan O'Callaghan.)
In such a crowded field, the big question is who will become the next major global player in the next phase of lunar exploration

Meanwhile, Japan's Slim (Smart Lander for Investigating Moon) mission recently placed its Moon Sniper lander on lunar soil to become the fifth nation on our nearest neighbour. The Japanese space agency, Jaxa, is also nearing the end of negotiations to put a Japanese astronaut on the Moon as part of the US Artemis programme.

Other countries – such as Israel, South Korea and numerous member states of the European Space Agency (Esa) – have also placed robotic spacecraft into lunar orbit. Nasa recently announced that the Mohammed Bin Rashid Space Centre in the United Arab Emirates (UAE) would provide an airlock for Gateway, its planned lunar orbiting space station for the Artemis missions.

The reasons for going vary: from scientific knowledge and technological advances to the prospect of accessing potentially useful lunar resources and political or economic value. The UK space industry, for instance, was extremely robust during the recession.

But in such a crowded field, the big question is who will become the next major global player in the next phase of lunar exploration. It will no longer be the sole preserve of national space agencies; commercial companies also want a piece of the lunar action.

India's lander Chandrayaan-3 touched down on the Moon's surface in August 2023, and India has vowed to send astronauts there in future missions 

Although China launched the first commercial mission to the Moon in 2014, the small privately funded Manfred Memorial Moon Mission was a microsatellite (61cm x 26cm x10cm) for a lunar flyby built by LuxSpace in Luxembourg. America's first planned commercial lunar mission, however, was much more ambitious.

In January this year, Astrobotic, a company based in Pittsburgh, launched Peregrine Mission 1. It was to be the first US spacecraft to land on the lunar surface since Apollo 17 in 1972. Unfortunately, a "critical loss of propellant" shortly after launch meant that it had to return home without landing and burned up in the Earth's atmosphere above a remote part of the South Pacific Ocean.

As a result, the upcoming US commercial mission, Intuitive Machines IM-1, which launched on 15 February and intends to place its Nova-C lander on the Moon, has been bumped up from second to potentially first place.
We are seeing that [space launch] economy start to catch up because the prospect of landing on the Moon exists - Steve Altemus

"As partners in advancing lunar exploration, we understand and share the collective disappointment of unforeseen challenges," says president and CEO of Intuitive Machines, Steve Altemus. "It is a testament to the resilience of the space community that we continue to push the boundaries of our understanding, embracing the inherent risks in our pursuit of opening access to the Moon for the progress of humanity."

The US declared the Moon a strategic interest in 2018. Does Altemus see his commercial mission as the beginning of a lunar economy? "At the time, no lunar landers or lunar programs existed in the United States," he says. "Today, over a dozen companies are building landers, which is a new market. In turn, we've seen an increase in payloads, science instruments, and engineering systems being built for the Moon. We are seeing that economy start to catch up because the prospect of landing on the Moon exists. Space is an enormous human endeavour and it will always contain a government component because they have a strategic need to be in space. But there's room now, for the first time in history, for commercial companies to be there."

In recent years India has also seen a boom in space start-ups such as Pixel, Dhruva Space, Bellatrix Aerospace and Hyderabad's Skyroot Aerospace, which launched India's first private rocket in 2022.

It has been more than 50 years since the last Apollo astronauts walked on the lunar surface (Credit: Nasa)

In October 2023 an Australian private company, Hex20, announced a collaboration with Skyroot Aerospace and Japan's ispace, which will attempt its second robotic lunar landing at the end of this year. The collaboration aims to stimulate demand for affordable lunar satellite missions.

But when it comes to the Moon, footprints and flags on the ground still generate the biggest headlines. The four astronauts who will go into lunar orbit on Artemis II – Nasa's Christina Hammock Koch, Reid Wiseman and Victor Glover plus Canadian Space Agency astronaut Jeremy Hansen – all feature in London's immersive Moonwalkers show.

You might also like:
The mysteries of the Moon's South Pole
The next footsteps on the Moon
What did Apollo do for us?

Written by British filmmaker Chris Riley and actor Tom Hanks (who famously played astronaut Jim Lovell in the Apollo 13 movie), it highlights the collective Nasa effort required to put astronauts on the Moon and looks ahead to Artemis doing the same.

I recently watched the show sat alongside an upcoming guest on the Space Boffins podcast: former Nasa Apollo flight director, Gerry Griffin. Afterwards he described the Artemis programme as "wonderful".

"I'm worried about the funding," he says. "It's going to always be a problem."

But Griffin is optimistic and full of confidence in its astronauts. "We got the best. They are really, really good. But we've got to get going. It's time we get back."

--

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Scientists Detect Water on the Surface of Asteroids for the First Time Ever

Using data from a retired NASA mission, researchers identified unique signs of water molecules on two space rocks, unlocking new insight into how water may have arrived on Earth


Catherine Duncan
Staff Contributor
SMITHSONIAN
February 16, 2024 
Data from the retired Stratospheric Observatory for Infrared Astronomy (SOFIA), a joint venture between NASA and the German Space Agency, led scientists to their discovery. NASA / Carla Thomas / SwRI


In a cosmic first, scientists have discovered water on the surface of two asteroids. The findings, published Monday in The Planetary Science Journal, chart new territory in understanding how the life-sustaining molecule is distributed throughout the solar system—and hint at how it ended up on Earth.

Scientists at the Southwest Research Institute detected the water molecules using data collected by the now-defunct Stratospheric Observatory for Infrared Astronomy (SOFIA), a Boeing airplane modified to carry a telescope that made its final flight in 2022.

Previously, other researchers used an instrument on SOFIA to examine particular wavelengths of light, called spectral signatures, emitted by molecules on the moon. In 2020, they spotted a specific wavelength unique to water molecules, revealing enough water on the moon’s sunlit surface to fill a 12-ounce bottle.

Inspired by this research, “we thought we could use SOFIA to find this spectral signature on other bodies,” says Anicia Arredondo, lead author of the new study and an asteroid researcher at the Southwest Research Institute, in a statement.

The scientists studied SOFIA’s observations of four asteroids rich in silicate, or minerals containing silicon and oxygen. Two of the asteroids, named Iris and Massalia, were found to emit the unique wavelength that “unambiguously” indicated the presence of water molecules, Arredondo says in the statement.

Iris and Massalia, which measure 124 miles and 84 miles in diameter, respectively, formed relatively close to the sun. According to the study, their water could be stored in multiple ways: The molecules could be trapped in beads of silicate glass or stuck to the silicates’ surface. Or, in a manner similar to the moon’s sunlit surface, where the molecular water was found within lunar soil, the asteroids’ water may be bound to minerals.

Though scientists have discovered water on asteroid samples brought to Earth through return missions, water molecules had never before been identified on asteroids still floating in space, writes Space.com’s Samantha Mathewson. Finding molecular water on Iris and Massalia, in particular, suggests liquid water can exist for eons on space rocks in the inner solar system—contrary to previous assumptions that any water would have evaporated from these asteroids under the heat of the sun.

“Asteroids are leftovers from the planetary formation process, so their compositions vary depending on where they formed in the solar nebula,” says Arredondo in the statement. “Of particular interest is the distribution of water on asteroids, because that can shed light on how water was delivered to Earth.”

The finding bolsters support for the popular theory that water did not originate on Earth, but rather crashed onto the planet through an asteroid impact.

“Asteroids, comets and their associated dust and debris are continually being nudged around by the gravity of the planets—changing the paths they follow through space,” Jonti Horner, an astrophysicist at the University of Southern Queensland in Australia, tells Newsweek’s Jess Thomson.

Knowledge of the composition of asteroids helps explain how materials within the inner solar system are distributed, according to the study. Understanding where water is located within our solar system could provide insight into how the substance is distributed in others.

“Because water is necessary for all life on Earth, [it] will drive where to look for potential life, both in our solar system and beyond,” according to the statement.

While the researchers found signs of water on Iris and Massalia, the other two asteroids they examined gave inconclusive results. Next, the team plans to use the James Webb Space Telescope to take a higher-resolution look at these bodies, then expand their search to even more asteroids.

“We have another proposal in for the next cycle to look at another 30 targets [with Webb],” adds Arredondo in the statement. “These studies will increase our understanding of the distribution of water in the solar system.”


Catherine Duncan is an intern with Smithsonian magazine.

 

Cardiff University collaborates with Professor Brian Cox to educate school students on artificial intelligence

16 February 2024

Professor Brian Cox and Professor Pete Burnap

Cardiff University has teamed up with The Royal Society and Professor Brian Cox in the next instalment of Brian Cox School Experiment videos.

As well as helping teachers bring exciting, creative, practical science to the classroom, the latest films will equip students with skills and information on emerging jobs and industries being reshaped by scientific advances.

Professor Brian Cox, physicist, and Royal Society Professor for Public Engagement in Science said: “The next generation of scientists will lead the way on finding new ways to tackle climate change, improve food security, and shape the evolution of artificial intelligence as it transforms society."

I hope these videos will be an invaluable tool for teachers, embedding experimental inquiry into lessons in the context of some of the most critical issues of our time and introducing students to some of the ground-breaking technologies being designed to solve them.
Professor Brian Cox

Professor Pete Burnap, Director of the Cardiff Centre for Cyber Security Research and Cyber Innovation Hub, and Co-Director of the Digital Transformation Innovation Institute, shared his research on machine learning and cybersecurity, and showcased the university’s research into technologies designed to understand threats to our public spaces and how to make them safer.

Professor Burnap said: “It was a pleasure to be involved in telling exciting and inspirational stories about real world uses of machine learning and cybersecurity."

The next generation are going to be born into a world of AI and digital connectivity, so it’s really important they get the chance to learn how to make it work for the good of humanity from a young age.
Professor Pete BurnapProfessor of Data Science & Cybersecurity

He continued: "I hope the Royal Society videos are seen by young people whose first instinct is – “I want to do that!””

Aimed at students aged 11-14, the resources span topics at the forefront of global scientific research, including genome editing for sustainable crop production; ocean acidification, carbon capture and the loss of biodiversity; and machine learning and its use in cybersecurity.

Downloadable resources for the three topics are available on the Royal Society’s website and YouTube channel, the STEM learning UK resource library, and the Times Education Supplement (TES) resources pages.

Wittenham Clumps artefacts on display for the first time

By Katie Waple
BBC News
Earth Trust CentreArchaeologists Ginny and Ben with a type of nozzle called a tuyere that was found

Artefacts from a 2,700-year-old Iron Age settlement are going on display this weekend.

The exhibition at the Earth Trust Centre, Little Wittenham, explores the hidden history of Wittenham Clumps in Oxfordshire.

The Festival of Discovery includes 15,000 artefacts, including all the components of a blacksmith's workshop.

Jayne Manley, at Earth Trust, said: "It's our time now to share and bring this knowledge to life."

DigVenturesExcavation work began at the site in 2018

Archaeologists from DigVentures carried out the excavation between 2018 and 2020.

Radiocarbon dating revealed the smithy dated from 771-515 BC, soon after ironworking first arrived in Britain around 800 BC.


The team found the blacksmith's building, internal structures, hearth lining, a type of nozzle called a tuyere, and even tiny bits of metal that flew off when a hammer was used.

Nat Jackson, DigVentures site director, led the excavation and said: "It's always exciting to uncover the remains of ancient buildings that were occupied thousands of years ago."


Sustainable intensification of climate-resilient maize–chickpea system in semi-arid tropics through assessing factor productivity

Abstract

Global trends show that the rapid increase in maize production is associated more with the expansion of maize growing areas than with rapid increases in yield. This is possible through achieving possible higher productivity through maize production practices intensification to meet the sustainable production. Therefore, a field experiment on “Ecological intensification of climate-resilient maize–chickpea cropping system” was conducted during consecutive three years from 2017–2018 to 2019–2020 at Main Agricultural Research Station, Dharwad, Karnataka, India. Results of three years pooled data revealed that ecological intensification (EI) treatment which comprises of all best management practices resulted in higher grain yield (7560 kg/ha) and stover yield compared to farmers’ practice (FP) and all other treatments which were deficit in one or other crop management practices. Similarly, in the succeeding winter season, significantly higher chickpea yield (797 kg/ha) was recorded in EI. Further EI practice recorded significant amount of soil organic carbon, available nitrogen, phosphorus, potassium, zinc, and iron after completion of third cycle of experimentation (0.60%, 235.3 kg/ha,21.0 kg/ha,363.2 kg/ha,0.52 ppm and 5.2 ppm respectively). Soil enzymatic activity was also improved in EI practice over the years and improvement in each year was significant. Lower input energy use was in FP (17,855.2 MJ/ha). Whereas total output energy produced was the highest in EI practice (220,590 MJ ha−1) and lower output energy was recorded in EI–integrated nutrient management (INM) (149,255 MJ/ha). Lower energy productivity was noticed in EI-INM. Lower specific energy was recorded in FP and was followed by EI practice. Whereas higher specific energy was noticed is EI–INM. Each individual year and pooled data showed that EI practice recorded higher net return and benefit–cost ratio. The lower net returns were obtained in EI-integrated weed management (Rs. 51354.7/ha), EI-recommended irrigation management (Rs. 56,015.3/ha), integrated pest management (Rs. 59,569.7/ha) and farmers’ practice (Rs. 67,357.7/ha) which were on par with others.

Sustainable intensification of climate-resilient maize–chickpea system in semi-arid tropics through assessing factor productivity | Scientific Reports (nature.com)

A secret war between cane toads and parasitic lungworms is raging across Australia

By Greg Brown, Macquarie University; Lee A Rollins, UNSW Sydney,  Rick Shine, Macquarie University  February 17, 2024


When the first cane toads were brought from South America to Queensland in 1935, many of the parasites that troubled them were left behind.

But deep inside the lungs of at least one of those pioneer toads lurked small nematode lungworms.

Almost a century later, the toads are evolving and spreading across the Australian continent. In new research published in Proceedings of the Royal Society B, we show that the lungworms too are evolving: for reasons we do not yet understand, worms taken from the toad invasion front in Western Australia are better at infecting toads than their Queensland cousins.

Related: Defining Moments in Australian History: Introduction of cane toads

An eternal arms race

Nematode lungworms are tiny threadlike creatures that live in the lining of a toad’s lung, suck its blood, and release their eggs through the host’s digestive tract. The larva that hatch in the toad’s droppings lie in wait for a new host to pass by, then penetrate through its skin and migrate through the amphibian’s body to find the lungs and settle into a comfortable life, and begin the cycle anew.

Parasites and their hosts are locked into an eternal arms race. Any characteristic that makes a parasite better at finding a new host, setting up an infection, and defeating the host’s attempts to destroy it, will be favoured by natural selection.

Cane toads have become a pest across Australia’s tropical north. Image credit: Shutterstock.

Over generations, parasites get better and better at infecting their hosts. But at the same time, any new trick that enables a host to detect, avoid or repel the parasites is favoured as well.

So it’s a case of parasites evolving to infect, and hosts evolving to defeat that new tactic. Mostly, parasites win because they have so many offspring and each generation is very short. As a result, they can evolve new tricks faster than the host can evolve to fight them.

The march of the toads

The co-evolution between hosts and parasites is most in sync among the ones in the same location, because they encounter each other most regularly. A parasite is usually better able to infect hosts from the local population it encounters regularly than those from a distant population.

But when hosts invade new territory, it can play havoc with the evolutionary matching between local hosts and parasites.

Since cane toads were released into the fields around Cairns in 1935, the toxic amphibians have hopped some 2,500 kilometres westwards and are currently on the doorstep of Broome. And they have changed dramatically along the way.

Since their introduction near Cairns in 1935, cane toads have steadily spread westward across Australia. Image credit: Brown, Shine, Rollins / Proceedings of the Royal Society B.

The Queensland toads are homebodies and spend their lives in a small area, often reusing the same shelter night after night. As a result, their populations can build up to high densities.

For a lungworm larva, having lots of toads in a small area, reusing and sharing shelter sites, makes it simple to find a new host. But at the invasion front (currently in Western Australia), toads are highly mobile, moving over a kilometre per night when conditions permit, and rarely spending two nights in the same place.

At the forefront of the invasion, toads are few and far between. A lungworm larva at the invasion front, waiting in the soil for a toad to pass by, will have few opportunities to encounter and infect a new host.

Lungworms from the invasion front

When hosts are rare, we expect the parasite will evolve to get better at infecting the ones it does encounter, because it is unlikely to get a second chance.

To understand how this co-evolution is playing out between cane toads and their lungworms, we did some experiments pairing hosts and parasites from different locations in Australia. What would happen when toad and lungworm strains that had been separated by 90 years of invasion were reintroduced to each other?

Related: Cane toads help spread parasites to frogs

To study this we collected toads from different locations, bred them in captivity and reared the offspring in the lab under common conditions. We then exposed them to 50 lungworm larvae from a different area of the range, waited four months for infections to develop, then killed the toads and counted how many adult worms had successfully established in their lungs.

As expected, worms from the invasion front were best at infecting toads, not just their local ones. Behind the invasion front, in intermediate and old populations we found that hosts were able to fight their local parasites better than those from distant populations.

While we saw dramatic differences in infection outcomes, we have yet to determine what biochemical mechanisms caused the differences and how changes in genetic variation of host and parasite populations might have shaped them.


Greg Brown, Postdoctoral researcher, Macquarie UniversityLee A Rollins, Scientia Associate Professor, UNSW Sydney, and Rick Shine, Professor in Evolutionary Biology, Macquarie University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Application of the performance of machine learning techniques as support in the prediction of school dropouts

Abstract

This article presents a study, intending to design a model with 90% reliability, which helps in the prediction of school dropouts in higher and secondary education institutions, implementing machine learning techniques. The collection of information was carried out with open data from the 2015 Intercensal Survey and the 2010 and 2020 Population and Housing censuses carried out by the National Institute of Statistics and Geography, which contain information about the inhabitants and homes. in the 32 federal entities of Mexico. The data were homologated and twenty variables were selected, based on the correlation. After cleaning the data, there was a sample of 1,080,782 records in total. Supervised learning was used to create the model, automating data processing with training and testing, applying the following techniques, Artificial Neural Networks, Support Vector Machines, Linear Ridge and Lasso Regression, Bayesian Optimization, Random Forest, the first two with a reliability greater than 99% and the last with 91%.

Application of the performance of machine learning techniques as support in the prediction of school dropout | Scientific Reports (nature.com)

A new genus and five new species of ‘alien-faced’ multi-legged forest dwellers discovered

These new species did not appear in earlier collecting of millipedes from the same area.

By Pranjal Mehar
17 Feb, 2024

Preserved heads of two new millipede species, Lophostreptus magombera and Udzungwastreptus marianae. Credit: University of the Sunshine Coast


University of the Sunshine Coast scientists have recently discovered a new genus of ‘alien-faced’ multi-legged forest dwellers in remote African jungles. They have uncovered a new genus and five new species of millipedes- many-legged creatures.

The heads of these creatures look like Star Wars characters. Scientists found them among forest litter and loose soil while researching tree and vine growth in Tanzania’s remote Udzungwa Mountains.

The discovery has the potential to shed light on two contrasting theories regarding the role of vines in forest recovery. One theory likens vines to bandages that protect the forest like a wound, while the other views them as ‘parasitoids’ that choke the forest.

The scientists named one of the newly discovered species, Lophostreptus magombera, in honor of the Magombera Nature Reserve. This reserve is a biologically unique forest that Professor Marshall has been working to conserve since the turn of the millennium.

The new genus is Udzungwastreptus. The five new species are Lophostreptus magombera, Attemsostreptus cataractae, Attemsostreptus leptoptilos, Attemsostreptus julostriatus and Udzungwastreptus marianae.

University of the Sunshine Coast Professor Andy Marshall said, “We record millipedes of all sizes during our fieldwork to measure forest recovery because they are great indicators of forest health, but we didn’t realize the significance of these species until the myriapodologists had assessed our specimens.”

Box of sample millipedes collected by UniSC FoRCE project researchers in Tanzania. [Photo credit: A.R. Marshall]

The project, supported by the Australian Research Council, seeks to explore global forest recovery following significant disturbances.

Recent research conducted as part of a worldwide collaboration indicates that higher temperatures play a crucial role in the proliferation of woody vines in forests already impacted by activities like logging.

A notable feature of the largest African millipedes is their numerous legs, with some species growing up to 35 centimeters in length.

Professor Marshall, from UniSC’s Forest Research Institute, said while the millipedes they found were only a few centimeters long – they still had around 200 legs each.

“Unearthing the new genus and species of millipedes highlighted the huge amount of discovery remaining in tropical forests.”

Journal Reference:Enghoff, H., Ngute, A. S., Kwezaura, R. L., Laizzer, R. L., Lyatuu, H. M., Mhagawale, W., Mnendendo, H. R., & Marshall, A. R. (2024). A mountain of millipedes XI. The trachystreptoform spirostreptids of the Udzungwa Mountains, Tanzania (Diplopoda, Spirostreptida, Spirostreptidae). European Journal of Taxonomy, 918(1), 1–50. DOI: 10.5852/ejt.2024.918.2405