Sunday, February 26, 2023

Scientists find meteorite in Texas from fireball that exploded with the force of 8 tons of TNT

(Image credit: Robert Ward/American Meteor Society)

Scientists have found a meteorite from a 1,000-pound space rock that exploded over Texas with the force of 8 tons of TNT this month.

At any given moment, the Earth is being bombarded by pieces of organic space debris known as meteoroids. Fortunately, most meteoroids are tiny, with a typical size ranging from a grain of sand and a pebble, and they don't typically pose a threat to the planet or the life on it.

But on Feb. 15, a much larger meteoroid slammed into Earth's atmosphere, and fragments of it rained down across Texas. NASA's Johnson Space Center confirmed the event in a statement(opens in new tab), which noted that the meteoroid likely measured about 2 feet (0.6 meters) across and weighed about 1,000 pounds (454 kilograms) when it entered the atmosphere. 

Related: What Are Meteorites?

The event took place in the skies above McAllen, Texas, a town about 60 miles [96] west of Brownsville along the Mexico border. Around 5:30 p.m. CST (2330 GMT) on Feb. 15, local law enforcement agencies received reports of a loud boom, and Houston Air Traffic Control received meteor reports from two aircraft, per Hidalgo County Sheriff Eddie Guerra(opens in new tab)

A map showing the location in southern Texas where a meteorite was found on Feb. 18, 2023. (Image credit: American Meteor Society)

The following day, NASA issued its statement confirming the event, with NASA Meteor Watch sharing additional details in a Facebook post. The meteoroid was traveling about 27,000 mph (43,452 kph) and exploded with the force of 8 tons of TNT at an altitude of about 21 miles (34 km). (For comparison, the largest non-nuclear warhead ever detonated by the U.S. military, the GBU-43/B Massive Ordnance Air Blast(opens in new tab), exploded with the force of 11 tons of TNT.) 

While most meteors burn up before their fragments reach the surface, the Feb. 15 meteor produced several meteorites (fragments of space rock that reach the ground), according to NASA. The American Meteor Society confirmed(opens in new tab) that planetary science researcher and meteorite hunter Robert Ward discovered the first meteorite from the event near El Sauz, Texas.

Robert Ward of Prescott Arizona with First Meteorite Found in Texas on Feb 18th, 2023 (Image credit: AMS/Robert Ward)

The event marked the third large meteor event in three days; on Feb. 13, a three-foot (one-meter) asteroid lit up the night skies in France and England, while on Feb. 14, a fireball was recorded over southern Italy.

NASA notes that once they're on the ground, meteorites cool quickly and generally don't pose a risk to humans. If you find a suspected meteorite, NASA asks you to report it to the Smithsonian Institution, which maintains the national collection of meteorites.

Follow Stefanie Waldek on Twitter @StefanieWaldek(opens in new tab).


WATCH | Door cam records crashing of half-ton meteor in Texas

Texas, United StatesEdited By: PrishaUpdated: Feb 25, 2023, 

A door cam installed in the backyard of a person's house in Texas McAllen recorded the crashing of a part of a meteor.

In the footage of the door cam shared by Twitter user @disdikmark, a loud boom of the meteor crash can be heard in the backyard. As per reports, the object that caused the loud boom was a half-ton meteor (454 kg) which crashed in the area. The Twitter user, while posting the video, wrote in the caption, “You can hear the meteorite explosion."

After the video was shared, NASA confirmed the crashing of a meteorite like an atmospheric fireball near McAllen, Texas around 5 pm EST on February 15. As per NASA experts, the object that fell was a meteoroid which roughly weighed 1,000 pounds and had a diameter of about two feet.

"The meteor seen in the skies above McAllen is a reminder of the need for NASA and other organisations to increase our understanding and protection of Earth, to combine scientific and engineering expertise to advance human space exploration, to integrate terrestrial and planetary research for furthering our understanding of the solar system, and to promote successful space missions by mitigating risk,” the NASA added.

After the video of the meteor crashing was shared on Twitter, it received more than one lakh views. The clip has also received several likes and comments.

WATCH | Meteor lights up the sky over English Channel

One user wrote, "Oh my goodness!!!! Hope everyone is ok!!! Thanks for sharing." "The birds. When wildlife flees, you know something bad is happening," said another.

A third user stated, "My parents live in mission on Bentsen road, mile 9, and my dad and brother were outside the house, and they heard like a thunder sound." 

(With inputs from agencies)

Fragment of 1,000-pound meteor that exploded over Texas could reveal new insights about our solar system

A hefty meteor weighing around the same as a grand piano recently exploded in the skies above Texas, potentially showering the surrounding area with smaller fragments. One of these meteorite chunks has already been recovered and could help reveal more about our cosmic neighborhood, experts say.

The meteor, which was likely a small asteroid, entered Earth's atmosphere on Feb. 15 at around 5 p.m. CST and broke apart in a burst of flames about 21 miles (33.8 kilometers) above the city of McAllen. This type of space rock is known as a fireball meteor because of the bright flash given off as it breaks apart, due to friction between the fast-moving object and the air in the atmosphere.

"Based on analysis of preliminary information from several sources, NASA experts believe the object was a meteoroid about two feet [0.6 meters] in diameter weighing about 1,000 pounds [454 kilograms]," representatives from NASA's Meteor Watch wrote on Facebook(opens in new tab). The meteor was traveling at around 27,000 mph (43,450 km/h) when it exploded and released the equivalent energy of around 8 tons (7.3 metric tons) of TNT, they added.

The meteor’s size and speed suggested that fragments had likely reached the ground without burning up completely, NASA representatives wrote. 

On Feb. 18, Robert Ward(opens in new tab), a meteorite hunter based in Arizona, recovered a fragment of the meteorite near El Sauz, Texas, after tracing the debris' trajectory using data from a National Oceanic and Atmospheric Administration weather radar, according to the American Meteor Society(opens in new tab) (AMS).  

Related: Extremely rare fireball meteor may have sparked a blaze that burned down a California home 

"When samples such as the remnants of this event are collected and studied, they enhance our understanding of the origin and evolution of our solar system," NASA representatives wrote.

There are likely more fragments scattered in the same area as Ward's fragment. If someone finds one on land they own then that person owns the fragment, but if you find it on public land you should contact the Smithsonian Institute, which manages the National Meteorite Collection, NASA representatives wrote. 

In a weird coincidence, the recent fireball arrived exactly 10 years after the Chelyabinsk meteor, which was around nine times larger than the Texas fireball and exploded over Russia Feb. 15, 2013, with the equivalent force of around 30 Hiroshima bombs, Mike Hankey(opens in new tab), operations manager at AMS, told Live Science in an email. 

The recent fireball was also the third fireball meteor detected worldwide in as many days: On Feb. 13 a meteor exploded in the skies above France, and on Feb. 14 a space rock broke apart above Italy, according to AMS. What's more, all three produced meteorites that have been recovered by experts, which is very rare, Hankey added.

Ecuador Calls Force Majeure On Almost All Of Its Oil Production

Ecuador's oil production is expected to be offline for at least three weeks, the country's government said on Friday after declaring a force majeure on Thursday. 

Ecuador announced the force majeure for its oil industry following a Marker River bridge collapse that triggered a closure of crude oil and gas pipelines. Petroecuador and pipeline operator OCP Ecuador suspended pipelines on Wednesday after the bridge collapsed.

On Thursday, Petroecuador said it would gradually shut oil wells, estimating that it would be seven days before pumping would begin to restart.

"By virtue of the force majeure, occasioned by the collapse of a bridge on the Marker River due to heavy seasonal rains, force majeure is declared for operators of exploration and exploitation of hydrocarbons which have been affected by hydrocarbon transport through the SOTE, OCP and Shushufindi Quito polyduct systems and the impossibility they have of receiving and transporting crude oil," Ecuador's Ministry said on Thursday.

But the country's oil production is looking like it will be out for longer.

On Friday, Energy Minister Fernando Santos said, "Turning off wells is simple, but restarting them is a bit complicated, we're talking about maybe some three weeks."

Ecuador routinely has trouble with its SOT and OCP pipelines that create stoppages due to tubing damage from rocks and landslides.

Ecuador's economy heavily depends on oil production and exports, with government data showing that oil accounted for one-third of the country's oil exports, and World Bank data suggesting that oil rents were responsible for 7% of its gross domestic product.

Ecuadorian President Lasso said that the country would strive to double its oil production by the end of his term in 2025, which would mean a total of nearly a million barrels per day.

State-controlled Petroecuador is responsible for 80% of the country's oil output.

By Julianne Geiger for Oilprice.com

SCI FI TECH

Power plasma with gigajoule energy turnover generated for eight minutes

Power plasma with gigajoule energy turnover generated for eight minutes
Experiment hall with Wendelstein 7-X in Greifswald. The fusion facility is the most modern 
and largest stellarator in the world. Credit: MPI für Plasmaphysik / Jan Hosan

After successful recommissioning in autumn 2022, the Greifswald nuclear fusion experiment has surpassed an important target. In 2023, an energy turnover of 1 gigajoule was targeted. Now the researchers have even achieved 1.3 gigajoules and a new record for discharge time on Wendelstein 7-X: the hot plasma could be maintained for eight minutes.

During the three-year completion work that ended last summer, Wendelstein 7-X was primarily equipped with water cooling for the wall elements and an upgraded heating system. The latter can now couple twice as much power into the  as before. Since then, the  experiment can be operated in new parameter ranges.

"We are now exploring our way towards ever higher energy values," explained Prof. Dr. Thomas Klinger, head of the Stellarator Transport and Dynamics Division at the Max Planck Institute for Plasma Physics (IPP) in Greifswald. "In doing so, we have to proceed step by step so as not to overload and damage the facility."

On 15 February 2023, the researchers reached a new milestone: for the first time, they were able to achieve an energy turnover of 1.3 gigajoules in this device. This was 17 times higher than the best value achieved before the conversion (75 megajoules). The energy turnover results from the coupled heating power multiplied by the duration of the discharge. Only if it is possible to couple large amounts of energy continuously into the plasma and also remove the resulting heat, a power plant operation is possible.

The plasma discharge lasted eight minutes

Particularly heat-resistant divertor baffle plates are used to dissipate the largest heat flows at Wendelstein 7-X. They are part of the inner wall, which is now cooled by a system of 6.8 kilometers of water pipes since the completion of the device. No other fusion facility in the world currently has such a comprehensively cooled inner wall.

The plasma heating consists of three components: the newly installed ion heating, the heating by neutral particle injection and electron microwave heating. For the current record, the electron microwave heating system was particularly important because it delivers large amounts of power over periods of several minutes.

The energy turnover of 1.3 gigajoule was achieved with an average heating power of 2.7 megawatts, whereby the discharge lasted 480 seconds. This is also a new record for Wendelstein 7-X and one of the best values worldwide. Before the completion works, Wendelstein 7-X achieved maximum plasma times of 100 seconds at much lower heating power.

Within a few years, the plan is to increase the energy turnover at Wendelstein 7-X to 18 gigajoules, with the plasma then being kept stable for half an hour.

Credit: Max Planck Society  8min

Background to nuclear fusion

The goal of fusion research is to develop a climate and environmentally friendly power plant. Similar to the sun, it is to generate energy from the fusion of atomic nuclei. The Max Planck Institute for Plasma Physics is pursuing the path of magnetic fusion. Because the  fire only ignites at temperatures above 100 million degrees, the fuel—a thin hydrogen plasma—must not come into contact with cold vessel walls.

Held by magnetic fields, it floats almost contact-free inside a . The magnetic cage of Wendelstein 7-X is created by a ring of 50 superconducting magnetic coils. It is a stellarator-type facility in which the special shapes of the coils are the result of sophisticated optimization calculations. With the help of these coils, the quality of plasma confinement in a stellarator should reach the level of competing tokamak-type facilities.

Provided by Max Planck Society 

The Wendelstein 7-X concept proves its efficiency

'Contract flip' at Montreal airport will vaporize hundreds of unionized jobs, lead to chaos, union says

Committee of airline reps did not renew Swissport for ground handling

A traveller at the Montreal airport. Swissport, a company that provides ground handling services at the airport was not awarded a contract and will stop operating there in the summer of 2023. (Ivanoh Demers/CBC/Radio-Canada)

Two unions are criticizing a "contract flip" at Pierre Elliott Trudeau International Airport, which, they say, will result in hundreds of unionized workers losing their jobs and could cause widespread chaos at the airport.

Earlier this month, Aéroports de Montréal (ADM), the authority that oversees the Montreal airport, said a committee made up of airline representatives selected three companies to perform ground handling services at the airport.

Ground handling includes customer service, loading and unloading customer baggage, freight and cargo and refuelling planes, among other important services. 

The committee selected two new companies: Menzies Aviation and Samsic Assistance, which do not currently provide ground handling services at the airport. It renewed the contract of TSAS, a subsidiary of Avjet.

Swissport, which currently does ground handling at the Montreal airport, was not selected. 

Two unions, Unifor and the International Association of Machinists and Aerospace Workers, IAMAW, condemned the decision to award the licences to two new companies, saying the end of the Swissport contract will lead to the loss of unionized jobs.

Swissport CEO Charles Roberge said in an interview the contract loss at the Montreal airport would lead to 195 jobs being cut.

Peter Tsoukalas, the general chairperson of IAMAW District 140, said neither Menzies nor Samsic employs unionized workers. CBC has requested a comment from the two companies but has not yet heard back. 

Unifor said in a statement that the move will leave up to 150 Unifor members without jobs by the end of June. 

Tsoukalas said 175 of IAMAW's unionized members were notified their jobs will cease as of June 1. 

Many of them, Tsoukalas said, may have to reapply with the new ground handling companies to get work, where they are likely to have lower wages and lose benefits and seniority they previously had as part of the union.

Timing could lead to summer vacation travel problems

The contract flip, as Tsoulakas referred to the move, coming into effect in late spring or early summer is also likely to contribute to problems because the airport is already dealing with staffing shortages, he said. 

The contract changes drew the attention of opposition politicians in Ottawa. 

"Montreal Airport's lack of respect for these unionized workers is disgusting and unacceptable. We all need to work for workers' rights and better working conditions," said Alexandre Boulerice, the NDP Labour Critic, in a joint media release with the IAMAW.

Bloc Québécois MP Louise Chabot also condemned the contract changes. 

 "The Bloc Québécois strongly denounces this practice, which denies the basic rights of workers," she said in the same media release. 

ADM said in a statement the decision was made to "optimize operational performance, improve operational safety and environmental performance of ground handlers."

"The issuance of ground handling licences will help better manage ground handling at YUL, which plays a significant role in the quality of services offered to passengers," the airport authority said in its statement. 

The newly chosen companies can start operating as of April 1. Current ground handlers who have not been selected, like Swissport, can operate until June 30, ADM said, "or even ask for an extension up to the end of the transition period, on Oct. 28, 2023."

But John Gradek, a lecturer at McGill University and academic co-ordinator of the university's supply chain, logistics, operations and aviation management program, said he was worried April 1, 2023 will be too soon a start date for a new company to take over the complex work of ground handling at the Montreal airport. 

"Both [new] companies are experienced when it comes to ground handling contracts. I'm not criticizing the company, I'm just concerned," he said.

"They're going to have to hire people. They're going to have to make sure that people are trained and that they get the experience that's needed to efficiently handle the operations that are going to be thrown at them."

Peak travel season begins in mid-may, Gradek said, which leaves the new contractors little time to prepare for the rush. 

Last summer, Gradek said a similar lack of experience led to delays at airports across the country.

"I don't think Montrealers want to go through the same level of anxiety this coming summer as we did last summer," he said.

ADM said the contract change affects ground handling services for airlines that do not have their own ground handlers. Air Canada, Delta, American Airlines and Air Creebec are not affected because they have their own ground service contractors and Air Transat was already operating with TSAS.

"All in all, these compagnies represent more than 80 per cent of YUL air services," an ADM spokesperson said.

Amazon union leader flies in to help UK strikers ‘kick down the door’









Chris Smalls, who set up the retailer’s first union in New York, came to Coventry to back its workers in their pay dispute


Chris Stokel-Walker
@stokel
Sun 26 Feb 2023 

The leader of Amazon’s first union has made his first trip outside the United States to support striking workers at the online retail giant’s Coventry warehouse.

Chris Smalls, who helped coordinate a successful unionisation drive at an Amazon warehouse in Staten Island, New York, in April 2022, travelled to the UK last week to provide advice to British workers as they try to gain recognition from the company.

“It’s important that we amplify each other’s fight and struggles because we want to build that international solidarity,” Smalls told the Observer. “Just like they’re refusing to talk to these workers and negotiate a fair contract, we’re in the same process back at home.”

Smalls’s trip has been in the making for a month, with the 34-year-old specifically registering for a passport in order to make his first journey. “I booked my flight the same week I got my passport,” he said. “As soon as I got that letter that I’m free to leave, I made sure this trip was a priority.”

That Smalls made the visit – and that it was his first – has been seen as a vindication for the 400 staff striking at the Coventry warehouse. They are seeking higher pay, but also complaining about overbearing management and long working hours.

“For Chris to say the first thing he wanted to do was come out here has got me,” said Darren Westwood, one of the Amazon workers picketing the Coventry facility. “It blows my mind.”

The dispute is the first official organised strike of Amazon workers in the UK. Previous actions in Tilbury, Essex which saw staff gather in the warehouse canteen to protest at pay and conditions, were wildcat strikes.

The Coventry strikers, who account for around one-fifth of the 2,000 staff at the site, are seeking a 43% increase in pay to £15 an hour. Amazon pays an hourly wage of between £10.50 and £11.45, depending on location. The national living wage is £10.42 an hour for those over the age of 23.

“They’re getting paid £10, minimum wage, for the same time of work we’re doing back in the States, and we’re getting paid twice as much,” said Smalls. “It doesn’t make any sense. Because of the cost of living, even us making twice as much, we are still living cheque to cheque.”

An Amazon spokesperson said “a tiny proportion of our workforce is involved” in the strikes. “In fact, only a fraction of 1% of our UK employees voted in the ballot – and that includes those who voted against action.” The spokesperson added: “We appreciate the great work our teams do throughout the year and we’re proud to offer competitive pay.” Amazon also claims to offer “comprehensive benefits that are worth thousands more” to staff.

Amazon’s US union got a higher wage for its workers by continuing to press the company to improve its offer – something Smalls believes can be done by UK workers.skip past newsletter promotion

UK Amazon workers stage a strike in Coventry in January. 
Photograph: Henry Nicholls/Reuter

“What the union does is say: ‘Well, yes, we got breadcrumbs, but imagine what we can get if we have a contract,’” he said. Smalls said that in the US, unionised Amazon workers are now fighting to get $30 an hour. “We’re doubling that up, because we know Amazon has the money.”

Smalls spoke with striking workers on the picket line last week as part of the visit, and exchanged advice on how to organise and work for recognition by the e-commerce giant. It does, however, take time. “This is just the start. Every marathon you have to take that first step,” said Westwood.

Smalls said that the striking Amazon workers will make Coventry “the stronghold and the catalyst for the UK”.

He added: “I promise you that when they win, there’s going to be warehouses all over this country that are going to do the same thing We’ve got to get one crack in the door, then we’ve got to kick the door down and let everybody in.”

Smalls suggests Coventry – and the UK – will just be the start of his Amazon unionisation drive, with potential future visits to similar movements in Europe. “They messed up,” he said. “They let me out. I’m going everywhere I need to be.”