Connect with us

Science & Technology

Space telescope uncovers massive galaxies near cosmic dawn

Published

on

Astronomers have discovered what appear to be massive galaxies dating back to within 600 million years of the Big Bang, suggesting the early universe may have had a stellar fast-track that produced these “monsters," AP reported.

While the new James Webb Space Telescope has spotted even older galaxies, dating to within a mere 300 million years of the beginning of the universe, it’s the size and maturity of these six apparent mega-galaxies that stun scientists, who reported their findings Wednesday.

Lead researcher Ivo Labbe of Australia’s Swinburne University of Technology and his team expected to find little baby galaxies this close to the dawn of the universe — not these whoppers.

“While most galaxies in this era are still small and only gradually growing larger over time,” he said in an email, “there are a few monsters that fast-track to maturity. Why this is the case or how this would work is unknown.”

Each of the six objects looks to weigh billions of times more than our sun. In one of them, the total weight of all its stars may be as much as 100 billion times greater than our sun, according to the scientists, who published their findings in the journal Nature.

Yet these galaxies are believed to be extremely compact, squeezing in as many stars as our own Milky Way, but in a relatively tiny slice of space, according to Labbe.

Labbe said he and his team didn’t think the results were real at first — that there couldn’t be galaxies as mature as the Milky Way so early in time — and they still need to be confirmed. The objects appeared so big and bright that some members of the team thought they had made a mistake.

“We were mind-blown, kind of incredulous,” Labbe said.

The Pennsylvania State University’s Joel Leja, who took part in the study, calls them “universe breakers.”

“The revelation that massive galaxy formation began extremely early in the history of the universe upends what many of us had thought was settled science,” Leja said in a statement. “It turns out we found something so unexpected it actually creates problems for science. It calls the whole picture of early galaxy formation into question.”

These galaxy observations were among the first data set that came from the $10 billion Webb telescope, launched just over a year ago. NASA and the European Space Agency’s Webb is considered the successor to the Hubble Space Telescope, coming up on the 33rd anniversary of its launch.

Unlike Hubble, the bigger and more powerful Webb can peer through clouds of dust with its infrared vision and discover galaxies previously unseen. Scientists hope to eventually observe the first stars and galaxies formed following the creation of the universe 13.8 billion years ago.

The researchers still are awaiting official confirmation through sensitive spectroscopy, careful to call these candidate massive galaxies for now. Leja said it’s possible that a few of the objects might not be galaxies, but obscured supermassive black holes.

While some may prove to be smaller, “odds are good at least some of them will turn out to be” galactic giants, Labbe said. “The next year will tell us.”

One early lesson from Webb is “to let go of your expectations and be ready to be surprised,” he said.

Science & Technology

Albania bans TikTok for a year after killing of teenager

Published

on

Albania on Saturday announced a one-year ban on TikTok, the popular short video app, following the killing of a teenager last month that raised fears over the influence of social media on children.

The ban, part of a broader plan to make schools safer, will come into effect early next year, Prime Minister Edi Rama said after meeting with parents' groups and teachers from across the country, Reuters reported.

"For one year, we'll be completely shutting it down for everyone. There will be no TikTok in Albania," Rama said.

Several European countries including France, Germany and Belgium have enforced restrictions on social media use for children. In one of the world's toughest regulations targeting Big Tech, Australia approved in November a complete social media ban for children under 16.

Rama has blamed social media, and TikTok in particular, for fuelling violence among youth in and outside school.

His government's decision comes after a 14-year-old schoolboy was stabbed to death in November by a fellow pupil. Local media had reported that the incident followed arguments between the two boys on social media. Videos had also emerged on TikTok of minors supporting the killing.

"The problem today is not our children, the problem today is us, the problem today is our society, the problem today is TikTok and all the others that are taking our children hostage," Rama said.

TikTok said it was seeking "urgent clarity" from the Albanian government.

"We found no evidence that the perpetrator or victim had TikTok accounts, and multiple reports have in fact confirmed videos leading up to this incident were being posted on another platform, not TikTok," a company spokesperson said.

Continue Reading

Science & Technology

Australia’s under-16 social media ban sparks anger and relief

Published

on

Australians reacted on Friday with a mixture of anger and relief to a social media ban on children under 16 that the government says is world-leading, but which tech giants like TikTok argue could push young people to "darker corners of the internet".

Australia approved the social media ban for children late on Thursday after an emotive debate that has gripped the nation, setting a benchmark for jurisdictions around the world with one of the toughest regulations targeting Big Tech, Reuters reported.

The law forces tech giants from Instagram and Facebook owner Meta Platforms to TikTok to stop minors from logging in or face fines of up to A$49.5 million ($32 million). A trial of enforcement methods will start in January, with the ban to take effect in a year.

"Platforms now have a social responsibility to ensure the safety of our kids is a priority for them," Australian Prime Minister Anthony Albanese said on Friday

"We're making sure that mums and dads can have that different conversation today and in future days."

Announcing the details of the ban earlier this month, Albanese cited the risks to physical and mental health of children from excessive social media use, in particular the risks to girls from harmful depictions of body image, and misogynist content aimed at boys.

In Sydney on Friday, reaction to the ban was mixed.

"I think that's a great idea, because I found that the social media for kids (is) not really appropriate, sometimes they can look at something they shouldn't," said Sydney resident Francesca Sambas.

Others were more scathing.

"I'm feeling very angry, I feel that this government has taken democracy and thrown it out the window," said 58-year-old Shon Klose.

"How could they possibly make up these rules and these laws and push it upon the people?"

Children, meanwhile, said they would try to find a way around the ban.

"I feel like I still will use it, just secretly get in," said 11-year-old Emma Wakefield.

WORLD FIRST

Countries including France and some U.S. states have passed laws to restrict access for minors without a parent's permission, but the Australian ban is absolute. A full under-14s ban in Florida is being challenged in court on free speech grounds.

Albanese's Labor party won crucial support from the opposition conservatives for the bill that was fast-tracked through the country's parliament as part of 31 bills pushed through in a chaotic final day of parliament for the year.

The government has said enough notice was given as it first flagged the ban after a parliamentary inquiry earlier this year that heard testimony from parents of children who had self-harmed due to cyber bullying.

But it was criticised by social media firms and some lawmakers who say the bill has lacked proper scrutiny.

A spokesperson for TikTok, which is hugely popular with teen users, said on Friday the process had been rushed and risked putting children into greater danger.

"We're disappointed the Australian government has ignored the advice of the many mental health, online safety, and youth advocacy experts who have strongly opposed the ban," the spokesperson said.

Albanese said on Friday passing the bill before the age verification trial has been completed was the correct approach.

"We've got your back is our message to Australian parents," Albanese said.

"We don't argue that its implementation will be perfect, just like the alcohol ban for under 18s doesn't mean that someone under 18 never has access, but we know that it's the right thing to do."

The ban could strain Australia's relationship with key ally the United States, where X owner Elon Musk, a central figure in the administration of president-elect Donald Trump, said in a post this month it seemed a "backdoor way to control access to the Internet by all Australians".

It also builds on an existing mood of antagonism between Australia and mostly US-domiciled tech giants. Australia was the first country to make social media platforms pay media outlets royalties for sharing their content and now plans to threaten them with fines for failing to stamp out scams.

Continue Reading

Science & Technology

South Korea authorities launch probe after three die in Hyundai car test

The Ulsan plant is Hyundai’s biggest manufacturing facility, with its own port and an annual production capacity of 1.4 million vehicles

Published

on

South Korean authorities launched an investigation on Tuesday after three people died during a car test at a Hyundai Motor plant in the city of Ulsan, police told Reuters.

The two Hyundai researchers and one Hyundai contractor were found unconscious in a car at around 3:00 p.m. while they were testing it in a "chamber," according to Hyundai's labour union.

South Korean media reports said the three had suffocated.

A police officer in Ulsan said the police and the labour ministry were investigating the incident, including its cause.

A fire department official told Reuters that it first received a report at 3:17 pm that the accident happened at Hyundai's No.4 factory.

"Hyundai Motor Company is deeply saddened by the incident that occurred at our plant in Ulsan, South Korea," Hyundai said in a statement, saying it would "cooperate fully with all relevant authorities to determine the cause of this incident."

The Ulsan plant is Hyundai's biggest manufacturing facility, with its own port and an annual production capacity of 1.4 million vehicles, including exports of 1.1 million units.

In November last year, Hyundai Motor broke ground on a 2 trillion won ($1.44 billion) plant in Ulsan dedicated to making electric vehicles in South Korea, as the automaker accelerated a shift away from petrol-powered cars.

[embed]https://youtu.be/KrLKCrpLALU[/embed]

Continue Reading

Trending

Copyright © 2024 Ariana News. All rights reserved!