Connect with us

Tech

Black holes disrupting star formation in other galaxies

Black holes disrupting star formation in other galaxies

Published

on

Black holes disrupting star formation in other galaxies

The black holes are disrupting star formation in other galaxies
Astronomers have discovered supermassive Death Star black holes unleashing powerful plasma beams that eerily change direction.

The finds are reminiscent of the fictional space station in Star Wars, potentially reshaping our understanding of cosmic phenomena.

The Chandra X-ray Observatory announced the findings on Wednesday in a release.

An international research team studied 16 galaxies using data from Nasa’s Chandra X-ray Observatory and the Very Long Baseline Array.

Advertisement

Astronomers have observed that jets of plasma from supermassive black holes can change direction over short time scales.

These jets are caused by material channeled by magnetic fields towards the black hole’s poles and then streamed back into space.

The jets are important for star formation, making their study crucial.

“We found that about a third of the beams are now pointing in completely different directions than before,”
Astrophysicist Francesco Ubertosi from the University of Bologna in Italy said in the release.

“These Death Star black holes are swiveling around and pointing at new targets, like the fictional space station in Star Wars.”

Advertisement

CHANGING DIRECTION

They compared current jet directions using radio wave data with past directions from cavities in surrounding hot gas.

About a third of the jets have significantly changed direction – by 45 degrees or more – within 10 million years or less.

Some jets showed changes up to 90 degrees, with the fastest changes occurring in around 1 million years.

Given the age of these black holes at over 10 billion years old, changes within a few million years are considered rapid.

Advertisement

Team member and Center for Astrophysics Harvard & Smithsonian scientist Gerrit Schellenberger noted how millions of years are short when it comes to black holes.

“Considering that these black holes are likely more than 10 billion years old, we consider a large change in direction over a few million years to be fast,” Schellenberger said.

“Changing the direction of the giant black hole beams in about a million years is analogous to changing the direction of a new battleship in a few minutes.”

These jet changes impact the formation of stars in their surrounding galaxies by preventing gas from running into each other.

They could potentially be causing damage to nearby stars and planets but the astronomers are unsure currently.

Advertisement

However, the astronomers are sure the black hole jets are stopping star formation in its tracks.

“These galaxies are too distant to tell if the beams from the Death Star black holes are damaging stars and their planets,” said co-author Ewan O’Sullivan from Harvard Astrophysics.

“But we are confident they are preventing many stars and planets from forming in the first place.”

The exact cause of the jet redirectioning is unclear, though it may involve material falling towards the black holes at different angles.

Further studies are needed to understand the mechanisms behind these directional changes.

Advertisement

Tech

Three ‘pro-Russian’ hackers arrested in Spain over cyberattacks

Three ‘pro-Russian’ hackers arrested in Spain over cyberattacks

Published

on

By

Three 'pro-Russian' hackers arrested in Spain over cyberattacks

Three pro-Russian hackers have been arrested for alleged cyberattacks against Spain and other NATO countries for terrorist purposes, Spanish police said on Saturday.

The suspects were detained for their alleged participation in distributed denial of service (DDoS) cyber attacks against public institutions and strategic sectors, the Civil Guard said.

It did not say if the three suspects, who have not been named, have been charged or detained.

The cyberattacks were allegedly carried out against web pages of public and private organizations in the government sectors, critical infrastructures and essential services in countries which support Ukraine in the conflict with Russia, it said.

Advertisement

Police released a video on social media platform X of a raid at the home of one of the suspects in which a Soviet-era hammer and sickle flag was mounted on a wall.

“These computer attacks have been organized by the hacktivist group NoName057(16), (which started) after the invasion of Ukraine by Russia and (which has been) one of the most active,” the Civil Guard said in a statement.

“In their own founding manifesto, this group acknowledges that they ‘will respond proportionately in response to the hostile and openly anti-Russian actions of Western Russophobes’.”

The arrests took place in Manacor on Spain’s Balearic Island of Mallorca, and in Huelva and Seville, in southern Spain, police said. Police said the investigation was ongoing.

Advertisement
Continue Reading

Tech

Microsoft says about 8.5 million of its devices affected by CrowdStrike-related outage

Microsoft says about 8.5 million of its devices affected by CrowdStrike-related outage

Published

on

By

Microsoft says about 8.5 million of its devices affected by CrowdStrike-related outage

A global tech outage that was related to a software update by cybersecurity firm CrowdStrike affected nearly 8.5 million Microsoft devices, Microsoft said in a blog post on Saturday.

“We currently estimate that CrowdStrike’s update affected 8.5 million Windows devices, or less than one percent of all Windows machines,” it said in the blog.

A software update by global cybersecurity firm CrowdStrike, one of the largest operators in the industry, triggered systems problems that grounded flights, forced broadcasters off air and left customers without access to services such as healthcare or banking. 

“While the percentage was small, the broad economic and societal impacts reflect the use of CrowdStrike by enterprises that run many critical services,” Microsoft said in its blog post.

Advertisement

CrowdStrike has helped develop a solution that will help Microsoft’s Azure infrastructure accelerate a fix, Microsoft said, adding that it was working with Amazon Web Services and Google Cloud Platform, sharing information about the effects Microsoft was seeing across the industry.

The air travel industry was recovering on Saturday from the outage that caused thousands of flights to be cancelled, leaving passengers stranded or grappling with hours of delays as airports and airlines were caught up in the IT outage.

Delta Air Lines, one of the hardest-hit airlines, said that as of 10 a.m EDT (1400 GMT) on Saturday, more than 600 flights had been canceled, adding that additional cancellations were expected.

Advertisement
Continue Reading

Tech

Malicious actors trying to exploit global tech outage for their own gain

Malicious actors trying to exploit global tech outage for their own gain

Published

on

By

Malicious actors trying to exploit global tech outage for their own gain

As the world continues to recover from massive business and travel disruptions caused by a faulty software update from cybersecurity firm CrowdStrike, malicious actors are trying to exploit the situation for their own gain.

Government cybersecurity agencies across the globe and CrowdStrike CEO George Kurtz are warning businesses and individuals about new phishing schemes that involve malicious actors posing as CrowdStrike employees or other tech specialists offering to assist those recovering from the outage.

“We know that adversaries and bad actors will try to exploit events like this,” Kurtz said in a statement. “I encourage everyone to remain vigilant and ensure that you’re engaging with official CrowdStrike representatives.”

The UK Cyber Security Center said they have noticed an increase in phishing attempts around this event.

Advertisement

Microsoft said 8.5 million devices running its Windows operating system were affected by the faulty cybersecurity update Friday that led to worldwide disruptions.

That’s less than 1% of all Windows-based machines, Microsoft cybersecurity executive David Weston said in a blog post on Saturday.

He also said such a significant disturbance is rare but “demonstrates the interconnected nature of our broad ecosystem.” 

What’s happening with air travel?

With their tightly timed, interwoven schedules and complex technology systems, many big airlines struggle to stay on time when everything goes well. It perhaps was not surprising that the industry was among the hardest hit by the outage, with crews and planes caught out of position.

Advertisement

By mid-afternoon Saturday on the U.S. East Coast, airlines around the world had canceled more than 2,000 flights, according to tracking service FlightAware. That was down from 5,100-plus cancellations on Friday.

About 1,600 of Saturday’s canceled flights occurred in the United States, where carriers scrambled to get planes and crews back into position after massive disruptions the day before. According to travel data provider Cirium, U.S. carriers canceled about 3.5% of their scheduled flights for Saturday. Only Australia was hit harder.

Canceled flights were running at about 1% in the United Kingdom, France and Brazil and about 2% in Canada, Italy and India among major air-travel markets.

Robert Mann, a former airline executive and now a consultant in the New York area, said it was unclear exactly why U.S. airlines were suffering disproportionate cancellations, but possible causes include a greater degree of outsourcing of technology and more exposure to Microsoft operating systems that received the faulty upgrade from CrowdStrike.

Which airlines are getting hit the hardest?

Advertisement

Delta Air Lines canceled more than 800 flights, or one-fourth of its schedule for Saturday, and that number did not include Delta Connection regional flights. It was followed by United Airlines, which dropped nearly 400 flights.

The worst airport to be, for a second straight day, was Hartsfield–Jackson Atlanta International Airport, where Delta is the dominant carrier. The Atlanta Journal-Constitution reported that thousands of people spent the night at the airport, many sleeping on the floors.

European airlines and airports appeared to be recovering slowly, although Lufthansa and its affiliates canceled dozens of flights. Its Eurowings budget subsidiary said check-in, boarding, booking and rebooking flights were all available again, although “isolated disruptions” were possible.

London’s Heathrow Airport said it was busy but operating normally on Saturday and that “all systems are back up and running.” Flights at Berlin’s main airport were departing on or close to schedule, German Press Agency dpa reported, citing an airport spokesman.

How are healthcare systems holding up?

Advertisement

Health care systems affected by the outage faced clinic closures, canceled surgeries and appointments and restricted access to patient records.

Cedars-Sinai Medical Center in Los Angeles, Calif., said “steady progress has been made” to bring its servers back online and thanked its patients for being flexible during the crisis.

“Our teams will be working actively through the weekend as we continue to resolve remaining issues in preparation for the start of the work week,” the hospital wrote in a statement.

In Austria, a leading organization of doctors said the outage exposed the vulnerability of relying on digital systems. Harald Mayer, vice president of the Austrian Chamber of Doctors, said the outage showed that hospitals need analog backups to protect patient care.

The organization also called on governments to impose high standards in patient data protection and security, and on health providers to train staff and put systems in place to manage crises.

Advertisement

“Happily, where there were problems, these were kept small and short-lived and many areas of care were unaffected” in Austria, Mayer said.

The Schleswig-Holstein University Hospital in northern Germany, which canceled all elective procedures Friday, said Saturday that systems were gradually being restored and that elective surgery could resume by Monday.

Will the tech industry face a reckoning?

“I wasn’t that surprised that an accident caused severe global digital disruption. I was a little surprised that the cause of it was a software update from a very well-respected cybersecurity company,” said Oxford University management professor Ciaran Martin, a former chief executive of the U.K.’s National Cyber Security Center.

“There are some very hard questions for CrowdStrike. How on earth did this update get through quality control?” he said. “Clearly the testing regime, whatever it is, failed.”

Advertisement

Martin said governments in the U.K. and the European Union will be powerless to take steps to prevent such breakdowns “because we have become dependent on a very American version of technology, and the power to do anything about that doesn’t rest in this continent.”

Other analysts doubted that the outage would lead Washington or any other government to propose new mandates on tech companies.

“I don’t know what the mandate would be. Do better QA?” said Gartner analyst Eric Grenier, using an acronym for quality assurance.

What did scam artists learn from the outage?

Grenier expects that a majority of affected machines will be fixed in about a week, with more time needed to reach laptops used by far-flung workers because the work can’t be done remotely – it’s a hands-on operation.

Advertisement

In the meantime, there will be scammers trying to take advantage of businesses that have indicated they were affected by the outage.

“The threat is very real,” Grenier said. “Bad actors have the information to send targeted phishing emails and calls. They know what endpoint-protection tools you use. They know you use CrowdStrike.”

Grenier said affected businesses need to make sure they use a fix supplied by CrowdStrike. “Don’t accept the help of somebody coming out of the blue and saying, ‘I’ll fix that for you,’” he said.

Advertisement
Continue Reading

Trending

Copyright © GLOBAL TIMES PAKISTAN