Tuesday, December 21, 2021

AP Exclusive: Polish opposition duo hacked with NSO spyware
By FRANK BAJAK and VANESSA GERA 

In this two-picture combo, Polish lawyer Roman Giertych, left, poses for a portrait in Rome, and Polish prosecutor Ewa Wrzosek, right, is photographed in Warsaw, on Thursday, Dec. 16, 2021. The hacking of their phones are the first two confirmed cases of Pegasus military grade spyware being used against targets in Poland, where an illiberal government is eroding democratic norms. 
(AP Photo/Andrew Medichini, left, Czarek Czarek Sokolowski)


WARSAW, Poland (AP) — The aggressive cellphone break-ins of a high-profile lawyer representing top Polish opposition figures came in the final weeks of pivotal 2019 parliamentary elections. Two years later, a prosecutor challenging attempts by the populist right-wing government to purge the judiciary had her smartphone hacked.

In both instances, the invader was military-grade spyware from NSO Group, the Israeli hack-for-hire outfit that the U.S. government recently blacklisted, say digital sleuths of the University of Toronto-based Citizen Lab internet watchdog.

Citizen Lab could not say who ordered the hacks and NSO does not identify its clients, beyond saying it works only with legitimate government agencies vetted by Israel’s Defense Ministry. But both victims believe Poland’s increasingly illiberal government is responsible.

A Polish state security spokesman, Stanislaw Zaryn, would neither confirm nor deny whether the government ordered the hacks or is an NSO customer.

Lawyer Roman Giertych and prosecutor Ewa Wrzosek join a list of government critics worldwide whose phones have been hacked using the company’s Pegasus product. The spyware turns a phone into an eavesdropping device and lets its operators remotely siphon off everything from messages to contacts. Confirmed victims have included Mexican and Saudi journalists, British attorneys, Palestinian human rights activists, heads of state and Uganda-based U.S. diplomats.

But word of the Poland hacking is especially notable, coming as rights groups are demanding an EU-wide ban on the spyware. The 27-nation European Union has tightened export restrictions on spyware, but critics complain that abuse of it by EU member states urgently needs to be addressed.

Citizen Lab previously detected multiple infections in Poland dating from November 2017, though it didn’t identify individual victims then. The Pegasus spyware has also been linked to Hungary, which like Poland has been denounced for anti-democratic abuses. Germany and Spain are reportedly among NSO’s customers, with Catalan separatists accusing Madrid of targeting them with Pegasus.

“Once you start aggressively targeting with Pegasus, you’ll join a fraternity of dictators and autocrats who use it against their enemies and that certainly has no place in the EU,” said senior researcher John-Scott Railton of Citizen Lab.

Former EU parliament member Marietje Schaake of the Netherlands, now international cyber policy director at Stanford University, said: “The EU cannot credibly condemn human rights violations in the rest of the world while turning a blind eye to problems at home.”

The Polish targets see the hack as evidence of a perilous erosion of democracy in the very nation where Soviet hegemony began unraveling four decades ago.

Just hours before Zaryn answered emailed questions about the hack from The Associated Press, a provincial prosecutor filed a motion seeking the arrest of Giertych, the lawyer, in a financial crimes investigation.

Zaryn did not comment on whether the two matters might be related. He said Poland conducts surveillance only after obtaining court orders.

“Suggestions that Polish services use operational methods for political struggle are unjustified,” Zaryn said.

An NSO spokesperson said Monday that the company is a “software provider, the company does not operate the technology nor is the company privy to who the targets are and to the data collected by the customers.” Citizen Lab and Amnesty International researchers say, however, that NSO appears to maintain the infection infrastructure.

The company spokesperson also called the allegations of Polish misuse of Pegasus unclear: “Once a democratic country lawfully, following due process, uses tools to investigate a person suspected in committing a crime, this would not be considered a misuse of such tools by any means.”

In July an investigation by a global media consortium found Pegasus was used in Hungary to hack at least 10 lawyers, an opposition politician and several journalists. Last month, a Hungarian governing party official acknowledged that the government had purchased Pegasus licenses.

In 2019, independent Polish broadcaster TVN found evidence the government anti-corruption agency spent more than $8 million on phone spyware. The agency denied the report but Prime Minister Mateusz Morawiecki was more ambiguous, saying all would “be clarified in due time.”

In the last four months of 2019, Giertych was hacked at least 18 times, Citizen Lab found. At the time, he was representing former Prime Minister Donald Tusk of Civic Platform, now head of the largest opposition party, and former Foreign Minister Radek Sikorski, now a European Parliament member.

The “jaw-droppingly aggressive” tempo and intensity of the targeting — day-by-day, even hour-by-hour — suggested “a desperate desire to monitor his communications,” Scott-Railton said. It was so unrelenting that the iPhone became useless and Giertych abandoned it.

“This phone was with me in my bedroom and it was with me when I went to confession. They scanned my life totally,” he said.

Most of the hacks occurred just ahead of an Oct. 13, 2019, parliamentary election that the Law and Justice party of Jaroslaw Kaczynski won by a slim margin, leading to a further erosion of judicial independence and press freedom.

Giertych was also involved representing an Austrian developer at the time who claimed that Kaczynski, Poland’s most powerful politician, stiffed him as a deal to build twin business towers in Warsaw fell apart. Revelations of that deal-gone-sour triggered a scandal because Polish law bans political parties from profit — and the towers were to be built on land owned by Kaczynski’s party.

Giertych also represented Sikorski in an illegal w iretapping case in which the former foreign minister’s conversations were recorded and published; Sikorski alleges the government failed to investigate the possible involvement of Kaczynski allies. Last year, anti-corruption officials searched Giertych’s home and office in a manner a Polish court deemed illegal and the EU called emblematic of how Poland’s government treats hostile lawyers in politically sensitive cases.

When the Lublin regional prosecutor applied for a court order Monday seeking Giertych’s arrest, it said the lawyer had refused to appear for questioning, and seemed to be “deliberately hiding from justice.”

Giertych called this absurd and said the financial wrongdoing investigation was trumped-up, that a Poznan court had already dismissed it for lack of evidence. Prosecutors say he is suspected of money laundering for legal fees he received in a Warsaw property dispute case a decade ago.

Citizen Lab was still investigating how Giertych’s phone was infected but said it expects a “zero-click” vulnerability, which wouldn’t involve user interaction. They believe Wrzosek was similarly hacked. Citizen Lab found six intrusions on her phone from June 24-Aug. 19.

Last year, Wrzosek ordered an investigation into whether presidential elections should be postponed over concerns they could threaten the health of voters and election workers. Almost immediately, she was stripped of the case and transferred to the distant provincial city of Srem with two days’ notice.

“I didn’t even know where the city was and I had nowhere to live there,” said Wrzosek, who was hacked shortly after returning to Warsaw and resuming media appearances critical of the government.

A vocal member of an independent prosecutors’ association, Wrzosek learned she’d been hacked — and tweeted about it -- when Apple sent out alerts last month to scores of iPhone users across the globe targeted by NSO’s Pegasus, including 11 U.S. State Department employees in Uganda. In a lawsuit it filed the same day, Apple called NSO “amoral 21-century mercenaries.” In 2019, Facebook sued the Israeli firm for allegedly hacking its globally popular WhatsApp messenger app.

Wrzosek has filed an official complaint but doesn’t expect prompt accountability, believing “the same services that tried to break into my phone will now be conducting the proceedings, looking for perpetrators.”

___

Bajak reported from Boston. Associated Press reporter Josef Federman contributed from Jerusalem.
B.C. Mounties say they are monitoring protest against gas pipeline

HOUSTON, B.C. — The RCMP say they are investigating allegations that protesters threatened security officials, set off flares and damaged vehicles at a drill site for the Coastal GasLink pipeline in northern British Columbia

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 Provided by The Canadian Press

The Mounties say in a statement released Monday that officers were called to the site along a forest service road near Houston on Sunday.

They say anyone blocking worker access to the area is in breach of a court-ordered injunction.

Opposition to the pipeline project among Wet'suwet'en hereditary chiefs sparked rallies and rail blockades across Canada last year.

The elected council of the Wet'suwet'en First Nation and others in the area have approved the pipeline, which would transport natural gas from Dawson Creek to Kitimat.

A statement from a group called the Gidimt'en Checkpoint says an area known as Coyote Camp has been reoccupied and an eviction notice that was issued to the company by the hereditary chiefs last year has been enforced.

Members of the Gidimt'en clan, one of five in the Wet'suwet'en Nation, had re-established blockades last month before several people were arrested while protesting construction of the 670-kilometre natural gas pipeline.

This report by The Canadian Press was first published Dec. 20, 2021.

Two U.S. senators seek probe into Amazon.com labor practices

(Reuters) -U.S. Senators Marco Rubio and Sherrod Brown on Monday asked the Labor Department for a full investigation into Amazon.com Inc's labor practices.

Reuters/PASCAL ROSSIGNOL FILE PHOTO: 
The logo of Amazon is seen at the company logistics centre in Boves

Rubio, a Republican, and Brown, a Democrat who chairs the Banking Committee, wrote in a letter that about "one out of every 170 U.S. workers is an Amazon employee, underscoring our particular interest in ensuring that the company's employment practices are fair, and in accordance with the law. We urge you to use every mechanism at your disposal to investigate Amazon's labor and employment practices immediately."

The lawmakers noted that the National Labor Relations Board had found that Amazon wrongfully terminated a worker who complained about unsafe working conditions during the coronavirus pandemic as well as two others who criticized Amazon's practices.

The board also ordered a re-run of an election by workers who voted not to unionize because Amazon's actions "made a free and fair election impossible."

This month, the lawmakers said, the Occupational Safety and Health Administration said it would investigate the deaths of six people which occurred when an Amazon warehouse in Illinois collapsed during a tornado.

"Amazon workers have voiced concerns regarding the company’s alleged lack of emergency response training, stringent cellphone policies, and expectations that workers continue to work during tornado warnings," the lawmakers said in the letter.

Amazon.com and the Labor Department did not immediately respond to requests for comment on the letter.

(Reporting by David Shepardson and Diane BartzEditing by Sonya Hepinstall)
Quebec Liquor Corp. warehouse staff OK deal; restocking shelves will take few weeks

The Canadian Press
Saturday, December 18, 2021 

Alcohol products are shown at an SAQ outlet in Montreal, Tuesday, December 7, 2021. 
THE CANADIAN PRESS/Graham Hughes

MONTREAL -- Quebec's liquor corporation says its warehouse workers have ratified a new contract, but it will be a few weeks more before store shelves are full again.

Union members voted 86.3 per cent in favour of the offer, with voting held in Quebec City and Montreal over the past two days.

Catherine Dagenais, the liquor corporation's chief executive officer, says in a statement the approval of the deal allows it to focus on restocking its own 400 outlets and those of business partners, but it will take a few more weeks until things return to normal.

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SAQ warehouse employees overwhelmingly reject deal for new contract

The new deal comes after a few strike days that led to depleted shelves and delivery days, as well as the rejection of an initial agreement reached on Nov. 29.

The Canadian Union of Public Employees says in a statement it agreed to a six-year contract that provides three per cent yearly wage increase. The employees also agreed to a new work arrangement that will permit warehouses to remain open on the weekend.

Wages, overtime and the precarious status of employees had been the main sticking points in negotiations with the union representing the Crown corporation's 800 warehouse and delivery employees.

-- This report by The Canadian Press was first published in French on Dec. 18, 2021.

WATER IS LIFE MNI WISCONI

ESA’s Trace Gas Orbiter Finds Water in Martian Canyon System

Dec 17, 2021 by News Staff / Source

Planetary researchers using the Fine Resolution Epithermal Neutron Detector (FREND) instrument onboard ESA’s Trace Gas Orbiter (TGO) have found evidence for very high content of hydrogen in the soil — the mean water equivalent hydrogen value as large as 40.3 wt% — in Candor Chaos, central part of Valles Marineris.

Mars; the center of the scene shows the entire Valles Marineris canyon system. Image credit: NASA Goddard Space Flight Center.

“With TGO we can look down to one meter below this dusty layer and see what’s really going on below Mars’ surface — and, crucially, locate water-rich ‘oases’ that couldn’t be detected with previous instruments,” said Dr. Igor Mitrofanov, a researcher at the Space Research Institute.

“FREND revealed an area with an unusually large amount of hydrogen in the colossal Valles Marineris canyon system: assuming the hydrogen we see is bound into water molecules, as much as 40% of the near-surface material in this region appears to be water.”

Dr. Mitrofanov and his colleagues analyzed FREND data obtained from May 2018 to February 2021, which mapped the hydrogen content of Mars’ soil by detecting neutrons rather than light.

“Neutrons are produced when highly energetic particles known as ‘galactic cosmic rays’ strike Mars, drier soils emit more neutrons than wetter ones, and so we can deduce how much water is in a soil by looking at the neutrons it emits,” said Dr. Alexey Malakhov, also from the Space Research Institute.

“FREND’s unique observing technique brings far higher spatial resolution than previous measurements of this type, enabling us to now see water features that weren’t spotted before.”

“We found a central part of Valles Marineris to be packed full of water — far more water than we expected.”

“This is very much like Earth’s permafrost regions, where water ice permanently persists under dry soil because of the constant low temperatures.”

“This water could be in the form of ice, or water that is chemically bound to other minerals in the soil.”

“However, other observations tell us that minerals seen in this part of Mars typically contain only a few percent water, much less than is evidenced by these new observations.”

Valles Marineris can be seen stretching across this frame, overlaid by colored shading representing the amount of water mixed into the uppermost meter of soil (ranging from low amounts in orange-red to high in purple-blue tones, as measured by TGO’s FREND instrument). The colored scale at the bottom of the frame shows the amount of ‘water-equivalent hydrogen’ (WEH) by weight (wt%). As reflected on these scales, the purple contours in the center of this figure show the most water-rich region. In the area marked with a ‘C,’ up to 40% of the near-surface material appears to be composed of water (by weight). The area marked ‘C’ is about the size of the Netherlands and overlaps with the deep valleys of Candor Chaos, part of the canyon system considered promising in our hunt for water on Mars. The underlying gray shading in this image represents surface topography, and is based on data from the Mars Global Surveyor Mars Orbiter Laser Altimeter (MGS/MOLA). The axes around the frame show location (latitude and longitude) on Mars. Image credit: Mitrofanov et al., doi: 10.1016/j.icarus.2021.114805

“Overall, we think this water more likely exists in the form of ice,” he said.

“Water ice usually evaporates in this region of Mars due to the temperature and pressure conditions near the equator.”

“The same applies to chemically bound water: the right combination of temperature, pressure and hydration must be there to keep minerals from losing water.”

“This suggests that some special, as-yet-unclear mix of conditions must be present in Valles Marineris to preserve the water — or that it is somehow being replenished.”

“This finding is an amazing first step, but we need more observations to know for sure what form of water we’re dealing with,” said Dr. HÃ¥kan Svedhem, a researcher at ESA’s ESTEC.

“Regardless of the outcome, the finding demonstrates the unrivalled abilities of TGO’s instruments in enabling us to ‘see’ below Mars’ surface — and reveals a large, not-too-deep, easily exploitable reservoir of water in this region of Mars.”

The findings appear in the journal Icarus.

_____

I. Mitrofanov et al. 2022. The evidence for unusually high hydrogen abundances in the central part of Valles Marineris on Mars. Icarus 374: 114805; doi: 10.1016/j.icarus.2021.114805


 “Significant Amounts of Water”

 Discovered on Mars

A significant amount of water has been discovered in a “Grand Canyon” like area of Mars. Credit: NASA

Scientists announced on Wednesday that they have discovered “significant amounts of water” in the Valles Marineris on Mars.

The discovery was made by an orbiter traveling around the planet, called the ExoMars Trace Gas Orbiter. The orbiter was launched in 2016 as part of a mission conducted by the European Space Agency and Roscosmos.

The orbiter discovered the water in Valles Marineris, an extensive canyon system on the red planet that is 10 times longer, five times deeper, and 20 times wider than the Grand Canyon in the United States.

The water was detected by the orbiters FREND, or Fine Resolution Epithermal Neutron Detector. The discovery came as something of a surprise as Mars’s water is typically found in its polar regions in the form of ice, but his canyon system is situated south of the red planet’s equator, where temperatures are too high for water ice to exist.

A study describing the discovery was published on Wednesday in the journal Icarus.
“With (the Trace Gas Orbiter) we can look down to one meter below this dusty layer and see what’s really going on below Mars’ surface — and, crucially, locate water-rich ‘oases’ that couldn’t be detected with previous instruments,” said study author Igor Mitrofanov in a statement.
“FREND revealed an area with an unusually large amount of hydrogen in the colossal Valles Marineris canyon system: assuming the hydrogen we see is bound into water molecules, as much as 40% of the near-surface material in this region appears to be water.”

Study shows that Mars’s landscape was formed by ancient water

A study of images from Mars shows that ancient water that once existed on the surface of Mars shaped the landscape of the planet, according to an announcement made in October.

Photographs of the Jezero crater show that the geography of the Red Planet was affected by the movement of water billions of years ago; the new evidence collected by the rover will help in the ongoing search for any evidence of life on the planet, according to the study, which was published yesterday in the journal Science.

The Perseverance rover landed in Mars’ Jezero crater back in February, beaming images of its descent all the way down to the surface of the planet and giving renewed hope to researchers who have tasked themselves with finding traces of life on the planet. The new research is a result of the study of the images it took during its first three months on the planet.

Now, because of photographs taken recently by the Rover, scientists can see just how a now-vanished river once entered into a lake, laying down sediment in the typical delta pattern that is visible from just above the planet.

Cliffs that once formed the high banks along the delta are shown in the high-resolution images; even their layers from sedimentation are visible in the new photos.

Colossal 'Fossil' Structures Have Been Detected Lurking on The Outskirts of Our Galaxy


All-sky map of the Milky Way, showing the large-scale disk structures in the midplane. (Laporte et al.)


18 DECEMBER 2021

From Earth's vantage point in one of the Milky Way's spiral arms, the structure of our galaxy is pretty difficult to reconstruct.

That's because gauging the distance to something in space when you don't know its intrinsic brightness is really, really hard. And there are a lot of objects in the Milky Way whose brightness is unknown to us. This means that sometimes, we can totally miss huge structures that you'd think should be right under our nose

A new set of such enormous structures has now been unveiled at the outer regions of the Milky Way disk: massive, spinning filaments with unclear provenance. Astronomers will be conducting follow-up surveys to try and solve the mystery.

The discovery came about thanks to the European Space Agency's Gaia space observatory, a project to map the Milky Way in three dimensions with the highest precision yet.

Gaia orbits the Sun with Earth, in a looping orbit around the Sun-Earth L2 Lagrangian point, a gravitationally stable pocket of space created by the interactions between the two bodies.

From there, it carefully studies stars in the Milky Way over an extended period, watching to see how the positions of stars seem to change against more distant stars. This provides a parallax, which can be used to calculate the distances to the stars.

While this can be done from here on Earth, atmospheric effects can interfere with the measurements. From its position in space, Gaia has an advantage, which it has been using to great effect. Since its 2013 deployment, the space telescope's data have revealed a number of structures and stellar associations we had no idea about.

The new structures were identified by a team led by astronomer Chervin Laporte of the University of Barcelona in Spain in data from the latest release, made in December of last year, with improved parallax precisions. The same data also showed previously known structures with much higher clarity than we'd seen before.

"We report the discovery of multiple previously undetected new filaments embedded in the outer disk in highly extincted regions," the researchers wrote in their paper.

"Some of these structures are interpreted as excited outer disk material, kicked up by satellite impacts and currently undergoing phase-mixing ('feathers'). Due to the long timescale in the outer disk regions, these structures can stay coherent in configuration space over several billion years."

Such spinning filaments at the galaxy's outskirts are not unexpected. According to simulations, interactions between the Milky Way and its satellite galaxies could produce such structures. The Milky Way has a swarm of satellites currently in orbit (maybe).

But there's a problem: the sheer number of the filaments found by Laporte and his colleagues vastly supersedes those seen in such simulations, which means we need another explanation.

One possibility is that the filaments are remnants of tidal spiral arms that were excited at various times by interactions with satellites; galactic fossils, in other words.

Another possibility is that they are the crests of distortions of the Milky Way disk which occurred due to collisions with other galaxies. The Milky Way has a history of collisions with other galaxies, which can cause perturbations in the galactic disk, so it's not an unreasonable supposition.

Such collisions, the researchers believe, could send disturbances propagating through the galactic disk like ripples on a pond.

The next step will be to conduct follow-up observations, to try and determine which of these scenarios is the most likely.

"Typically this region of the Milky Way has remained poorly explored due to the intervening dust which severely obscures most of the galactic midplane," Laporte said.

"While dust affects the luminosity of a star, its motion remains unaffected. We were certainly very excited to see that the Gaia motions data helped us uncover these filamentary structures! Now the challenge remains to figure what these things exactly are, how they came to be, why in such large numbers, and what they can tell us about the Milky Way, its formation and evolution."

The research has been published in the Monthly Notices of the Royal Astronomical Society: Letters.

Stunning close-up reveals secrets of Milky Way's neighbour

Stunning close-up reveals secrets of Milky Way's neighbour
Credit: CSIRO/N. Pingel et al

A stunning image captured by researchers at The Australian National University (ANU) and Australia's national science agency, CSIRO, shows one of the Milky Way's closest neighbors in new detail.

Lead author of the study, Dr. Nickolas Pingel, says it is the clearest ever picture of  emitted from the Small Magellanic Cloud.

"The clarity of this image is unprecedented," he said.

"We're able to see all of the small-scale structures for the first time. It's an important step in understanding the role hydrogen plays in the evolution of .

"For example, you can see holes within the gas. This shows us that hydrogen interacts with supernovae."

This study focused on the Small Magellanic Cloud—the nearest satellite galaxy of the Milky Way.

The  used the CSIRO's ASKAP radio telescope and high-tech software to capture and process 100 hours of data.

Now they hope to take the project a step further.

"This specific image was part of a pilot survey," Dr. Pingel said.

"Over the next year we are going to collect more observations. Eventually we'll be able to connect them and make a giant mosaic which will show how this galaxy connects to its nearby neighbors."Astronomers create most detailed radio image of nearby dwarf galaxy

More information: N. M. Pingel et al, GASKAP-HI Pilot Survey Science I: ASKAP Zoom Observations of HI Emission in the Small Magellanic Cloud. arXiv:2111.05339v2 [astro-ph.GA], arxiv.org/abs/2111.05339

Provided by Australian National University 

COULD A WITCHER-STYLE MULTIVERSE REALLY EXIST? WE ASKED A PHYSICIST

Toss a coin to the physicist who agreed to this interview



By Maddie Stone Dec 17, 2021

Those who plan on watching the second season of Netflix’s The Witcher can look forward to plenty of epic monster battles, character development, and Henry Cavill staring broodingly into the middle distance. But season 2 also reveals a lot about the broader world that The Witcher takes place in — or more accurately, the many worlds.

Specifically, this darker and more serious chapter in the epic fantasy saga zooms in on a seminal event in the Witcher lore known as the conjunction of the spheres. During the conjunction, which took place approximately 1,500 years before the events of the show, a bunch of different spheres of reality collided with one another, causing elves, dwarves, humans, and monsters to all get mixed up together on the same continent, much to their mutual discontent.

While this cosmic collision is pure fantasy, there is a potentially scientific idea at its core: some physicists have proposed that our universe may really be just one in a much grander multiverse of realities. If that’s true, it may even be possible for different universes to interact to some extent. These ideas are wildly controversial, with one camp of physicists arguing that the multiverse is more a matter of philosophy or religion than a fruitful terrain for scientific inquiry. Others say that since we can’t rule out the existence of a multiverse, there’s no harm in speculating about its nature.

With season 2 of The Witcher dropping on Netflix today, it felt like an apt time for some rampant speculation. To keep things as scientifically grounded as possible, The Verge chatted with University of California, San Diego cosmologist Brian Keating about some of the most mind-bending multiverse ideas physicists have proposed, where pop culture stretches these ideas beyond recognition, and the cosmic horizons we may never see past.

This conversation has been edited for length and clarity.

The Witcher is not alone in popularizing the idea of the multiverse. It’s a big theme in the Marvel cinematic universe now, it’s in Star Trek. Some physicists would say the multiverse is nothing but science fiction. But could you tell us a bit about why others think it might really exist?

Yeah. So the multiverse is kind of a natural extrapolation of what we call the Copernican principle, which is that where we are and who we are and what we are shouldn’t be significant or aberrant. It should be kind of representative of the properties throughout all of reality. And just as there’s many planets, there are many stars, there are many galaxies, and there are many clusters of galaxies, so, too, the logic would have one believe there is no reason to suspect that there should be only one universe. In fact, one of the foremost proponents of the multiverse paradigm, Andrei Linde, who’s a professor at Stanford, claims that we shouldn’t be biased in favor of a universe. That we should, in fact, start from this [idea] that there probably is a multiverse. And the notion has been extended by other people to really encompass all the different types of possibilities for the existence of more than one universe: A universe that is characterized by laws of physics, constants of nature, intelligent or conscious beings, and so forth.

The multiverse comes as directly as a consequence of two very different branches of physics. One is cosmology, in particular what’s called inflation, the theory of the ultra-high energy origin of the expansion of space and time that would later become our observable universe. And also from string theory, which predicts sort of a landscape of possible values for different fundamental constants and forces. So these two different fields, which aren’t really associated with one another, both imply that there is the possibility for a multiverse. And as yet, there is a vast disagreement as to whether or not the multiverse actually is part of physics, or if it’s pure philosophy. And if it’s part of physics, how could one go about testing it or even falsifying its existence?

So to be clear, we have no direct evidence for the existence of a multiverse.

So the question is whether or not it’s even in principle possible to provide evidence that supports a multiverse. And if such evidence can’t be found, is it possible to rule out the existence of the multiverse? Because you might be living in a multiverse, but then you might not be able to detect that you’re living in a multiverse the same way that bacteria in a petri dish can’t detect that they live inside of a laboratory inside of a building inside of a planet. It’s too remote from the sphere of reality that they have access to.

Now, there are people who propose there are ways to measure the possibility that we are in a multiverse. The one particular signature would be looking for an impact, or a collision with another universe, that would produce an observational pattern in the oldest light in the universe called the cosmic microwave background radiation, which is what I study. And that theory, or conjecture, is pretty wildly contested. It’s not at all clear if you could categorically detect and therefore motivate the existence of the multiverse.

But there’s no doubt in any physicists’ minds that there are regions of our universe which are unobservable to us. And in that sense, you know, we already believe in a sort of multiverse. But then, extending and adding new features onto that multiverse, from inflation or from string theory, that’s where things get very controversial.

As I said a moment ago, we’ve seen a lot of depictions of the idea of the multiverse in pop culture. I think what makes The Witcher stand out a little bit is it’s not just positing there are all these different universes out there in their own separate bubbles, but that universes have collided with each other. There’s a historical, cataclysmic collision that sort of sets the stage for the events of the series. In the context of a multiverse, do physicists have any ideas as to whether, or how, different universes might interact?

First of all, physicists aren’t in agreement that the multiverse is a serious scientific paradigm worthy of discussion. A lot of people believe it’s not. On the other hand, if you do take it seriously, then you can ask questions about it. But then it’s not clear whether or not there’s any evidence, or set of evidence, that could prove it wrong. Because you could say, well, we thought this was evidence for the multiverse. But actually, in the multiverse, since anything is possible to happen, you can get any range of predictions that you want. And so it’s kind of unsatisfying. It’s like eating cosmic Wonder Bread.

In the context where these universes collide, it could be just as light travels at a finite speed, the Sun could disappear right now, and we wouldn’t see it for eight minutes. So it’s not possible to say something is ruled out just by not seeing it.

So there could be a multiverse. It could be one light-year away from us, in a certain sense, in which case next year we’ll see it. It could be 10^50 light-years away from us, in which case we’ll never see it. So it could turn out, yes, tomorrow we impact a universe that’s one light-year away from us. But the thing I would gently push back on is that the notion of a collision nucleating some vast explosion is not at all clear.

For example, we know for sure we will eventually collide with the Andromeda galaxy, which is our nearest neighbor galaxy. It’s almost like a twin sister of ours, and it has almost the same number of stars, hundreds of billions of stars. It’s even more massive than ours, and it’s one of the few galaxies we’re moving towards rather than expanding away from, according to Hubble. That galaxy will someday crash into our galaxy, but it’s not like every single point will collide and each star will hit another star. In fact, they’ll mostly pass right through each other. So if a galaxy, which is billions of times more dense than the universe on average, can pass right through another galaxy, all the more so a universe could pass through another universe in a certain sense.

So I think it’s artistic license to suggest that that could nucleate some fireworks. But I admit it’s pretty cute.

Could there be any sorts of interactions between different universes?

Yeah, in fact, one of the ways you might see the impact of a universe adjacent to ours is that it might have a gravitational force that deflects the light traveling in our universe. But all of this would be taking place at the boundary of what we can see just today. In other words, it wouldn’t be happening to us. It would be happening 45 billion light-years away from us and we would just be seeing it now [Editor’s note: 45 billion light years is the approximate radius of the observable universe]. Unless you’re talking about some interdimensional wormhole between different universes, and that’s incredibly speculative.

And some of the problems with these physical phenomena when applied to science fiction, like wormholes and other things, is that they’re barely at the level of speculation. They’re completely removed from testability in laboratory settings. They’re mathematical possibilities. But as I always say, mathematics allows the possibility for infinity. You know, just divide one by zero. But there is nothing that we know about in the universe that’s infinite. Nothing that has infinite temperature, density, pressure, energy, etc. So just because something is mathematically possible doesn’t mean it has any physical relevance. So I don’t want to be a downer. But the reality is, yes, it is possible to witness the effects of another universe interacting with ours. But it would be occurring not here, but a very, very distant there.

So it sounds like a physically plausible story about the multiverse would not have a lot of cool stuff to look at.

Well, yeah, it’s like saying, you know, a black hole or a wormhole as is possible. Of course, we measure black holes, but we don’t measure any near us, right? There’s not one that we can kind of play with and jump into and then pop out, you know, in the Andromeda galaxy, even, let alone in another universe.

And by the way, if the laws of physics change from universe to universe, it’s not at all clear that the laws of mathematics, or the laws of logic, would be forbidden from changing. In other words, you get into a wormhole in our universe. You pop out in another universe. Well, the laws of wormholes are based on the laws of black holes, which are the consequence of general relativity, which is a consequence of partial differential equations, which is a consequence of calculus, which is a consequence of real numbers. And who knows if there’s such a thing as real numbers in another universe? Just as the old joke goes, an old fish swims by two young fish and says to them, “How’s the water?” And they say, “What’s water?” They have no concept of it. It’s so alien to their existence that they can’t even contemplate it. And there’s no reason to be chauvinistic, to think it would be like our universe.

I feel like we see that idea represented at least a little bit allegorically in science fiction — and this true in The Witcher as well — in how when beings move from universe to universe, they often can’t survive in the other universe for an extended period of time because it’s fundamentally so different.

In my first book Losing the Nobel Prize, I made this kind of analogy which I called the petriverse. So imagine there’s some bacterium and it’s in a petri dish and it starts making a colony. That bacterium, if it was very smart, could realize that there’s a possibility for another colony really far away from it to exist because it has the agar gel and it has gravity and sunlight and whatever. It could deduce that there is a possibility for another universe in the petriverse, and actually some of these other colonies when they do form, even though they are only a couple of centimeters away, they produce toxins that prevent other bacteria from invading their space. So it’s like, a barrier that makes it inhospitable and hostile to the existence of hopping between universes, just like what you described.

What sorts of advances in physics could we make in the coming decades that might shed light on this question of whether the multiverse is real?

I think the field that I’m studying, which is the cosmic microwave background, the key observable, and what we’re trying to discover, is unequivocal evidence that inflation took place. And if inflation took place, that would come concomitantly with the multiverse in most physicists’ anticipation. They go as a direct consequence. If you discover these waves of gravity embedded in the cosmic microwave background, then you would get a very strong piece of evidence that would seem to mandate the multiverse exists. [Editor’s note: Keating later clarified that this would be ‘perhaps the strongest circumstantial evidence possible’ for a multiverse.] On the other hand, it may be that inflation took place, but it’s too weak to produce observable gravitational waves, in which case you might need to wait till a future version of the LIGO [the Laser Interferometer Gravitational-Wave Observatory] experiment in space called LISA. And that could potentially take us back and show us evidence of the fundamental origination from, perhaps, the surrounding multiverse.

And I should point out there’s other ways that multiverses [could exist]. There’s a quantum mechanical version of the multiverse called the “many worlds interpretation.” And that’s that at every possible moment of time, every possible choice, every possible observable, is instantiated. But we only observe one particular outcome for each observation because we’re sort of coherently oscillating with those quantum mechanical wave functions, and therefore we can observe them. Those are kind of parallel universes going on right now. So if I turn my head to the right or the left, there’s a whole universe where Brian turned his head to the left. So that’s a version of the multiverse. There’s also a version of the multiverse where the universe is cyclical in a certain sense; it’s coming into existence, it’s coming out of existence in a collapse. It’s reemerging, and it’s kind of growing, and then that universe collapses. So that’s kind of a temporal multiverse. And those kinds of models have been around since antiquity.

I would say, it’s hard to find a model of cosmology that doesn’t have some version of a multiverse in it, whether that’s temporal or spatial, or spatial and temporal, or quantum mechanical. So there are hopes that one could get some confidence from measuring aspects of quantum mechanics. And then there’s the cosmic and gravitational wave experiments that I do. And then, perhaps if string theory were to make much more concrete predictions. So I think there’s a lot more theoretical advances that need to be made, a lot more experimental [advances]. But fundamentally, we may never be able to prove it wrong. In other words, you ruled out 10^499 different universes but you didn’t rule out this one. And these observations therefore become what’s called unfalsifiable. In which case you can’t prove that inflation’s wrong, but you also can’t prove that the alternatives are right. And in that case, all hope would be lost. You can’t prove it using an experiment or evidence, you can only prove it on Twitter or something.

Sounds like the multiverse is going to continue to fuel physics beef for many years to come.

Yes. I always say, inflation for economists means one thing. But for us, the multiverse ensures full employment for cosmologists for years to come. And for science fiction.