Science & Technology
Astronomers found a heartbeat-like radio signal coming from a galaxy
From over a billion light-years away and surrounded by a plasma cloud, a new radio wave is being pick up on Earth, courthouse news agency reported.
In a new study published in Nature, astronomers discovered a new radio signal strikingly different from other recorded radio bursts. Captured by the Canadian CHIME Experiment, a massive telescope that turns digital signals into three-dimensional hydrogen density maps, the novel radio wave is labeled FRB 20191221A.
Fast radio bursts, or FRBs, were first detected in 2007 and are a pulse of radio wave activity that usually only last a couple of milliseconds. The CHIME telescope has witnessed over a thousand radio burst sources since 2018. Though there is more study to be done on the burst origins and processes, it is estimated that approximately a thousand fast radio bursts arrive in Earth’s sky every day, read the report.
“There are not many things in the universe that emit strictly periodic signals. Examples that we know of in our own galaxy are radio pulsars and magnetars, which rotate and produce a beamed emission similar to a lighthouse. And we think this new signal could be a magnetar or pulsar on steroids,” says Daniele Michilli, a postdoc at Massachusetts Institute of Technology’s Kavli Institute for Astrophysics and Space Research, in a press release.
According to the report with most signals coming and going like a flash, the new radio burst is a game-changer, as it puts out a persistent burst every few seconds.
“It was unusual. Not only was it very long, lasting about three seconds, but there were periodic peaks that were remarkably precise, emitting every fraction of a second — boom, boom, boom — like a heartbeat. This is the first time the signal itself is periodic,” Michilli added.
The burst is coming from a far-off galaxy, over a billion light-years away from Earth, and its source is thought to be over a million times brighter than neutron stars in our own Milky Way. Additionally, the burst source may usually be less bright, causing a train of radio waves to emit while it rotates, courthouse news reported.
Comparing the properties of FRB 20191221A to other signals caught by the CHIME telescope, it seems that a very turbulent plasma cloud surrounds the source.
“This detection raises the question of what could cause this extreme signal that we’ve never seen before, and how can we use this signal to study the universe. Future telescopes promise to discover thousands of FRBs a month, and at that point, we may find many more of these periodic signals,” Michilli noted.
Science & Technology
Ethiopian volcano erupts for first time in nearly 12,000 years
Ash from the eruption drifted across the region, spreading over Yemen, Oman, India, and parts of Pakistan.
The Hayli Gubbi volcano in Ethiopia’s Afar region has erupted for the first time in almost 12,000 years, sending massive ash plumes soaring up to 14 kilometres into the atmosphere, according to the Toulouse Volcanic Ash Advisory Centre.
The eruption began on Sunday and lasted several hours. Hayli Gubbi, located around 800 kilometres northeast of Addis Ababa near the Eritrean border, sits within the geologically active Rift Valley, where two major tectonic plates meet. The volcano rises roughly 500 metres above the surrounding landscape.
Ash from the eruption drifted across the region, spreading over Yemen, Oman, India, and parts of Pakistan. Satellite imagery and social-media videos captured a towering column of white smoke billowing into the sky.
The Smithsonian Institution’s Global Volcanism Program notes that Hayli Gubbi has no recorded eruptions during the Holocene, the period dating back about 12,000 years to the end of the last Ice Age.
Volcanologist Simon Carn of Michigan Technological University also confirmed on Bluesky that the volcano had “no record of Holocene eruptions.”
Science & Technology
Cloudflare outage easing after millions of internet users affected
A global outage at web-infrastructure firm Cloudflare began to ease on Tuesday afternoon after preventing people from accessing major internet platforms, including X and ChatGPT.
Cloudflare, whose network handles around a fifth of web traffic, said it started to investigate the internal service degradation around 6:40 a.m. ET. It has deployed a fix but some customers might still be impacted as it recovers service.
The incident marked the latest hit to major online services. An outage of Amazon’s cloud service last month caused global turmoil as thousands of popular websites and apps, including Snapchat, were inaccessible due to the disruption.
Cloudflare – whose shares were down about 5% in premarket trading – runs one of the world’s largest networks that helps websites and apps load faster and stay online by protecting them from traffic surges and cyberattacks.
The latest outage prevented users from accessing platforms such as Canva, X, and ChatGPT, prompting users to log outage reports with Downdetector.
Downdetector tracks outages by collating status reports from a number of sources. “We saw a spike in unusual traffic to one of Cloudflare’s services beginning at 11:20 UTC. That caused some traffic passing through Cloudflare’s network to experience errors,” the company said in an emailed statement.
“We are all hands on deck to make sure all traffic is served without errors.”
X and ChatGPT-creator OpenAI did not immediately respond to requests for comment. – REUTERS
Science & Technology
China sends its youngest astronaut to ‘Heavenly Palace’ space station
China’s Shenzhou-21 space rocket and its crew including the youngest member of its astronaut corps blasted off on Friday atop a Long March-2F rocket from the Jiuquan Satellite Launch Centre in northwest China, Chinese state media reported.
It was the seventh mission to the permanently inhabited Chinese space station since it was completed in 2022, Reuters reported.
Missions on China’s Shenzhou-21 spacecraft involve trios of astronauts on six-month stays in space, with veteran astronauts increasingly replaced by younger faces. First-timers Zhang Hongzhang, 39, and Wu Fei, 32 – China’s youngest astronaut to be sent to space – were picked to participate in the programme in 2020.
Commander Zhang Lu, 48, flew on the 2022 Shenzhou-15 mission.
FIRST SMALL MAMMALS ON SPACE STATION
The Shenzhou-21 astronauts will take over from the Shenzhou-20 crew who had lived and worked on board Tiangong, or “Heavenly Palace”, for more than six months. The Shenzhou-20 astronauts will return to Earth in the coming days.
The Shenzhou-21 crew were also joined by four black mice, the first small mammals to be taken to the Chinese space station. The mice will be used in experiments on reproduction in low Earth orbit.
Biannual launches have become the norm for the Shenzhou programme, which has in the past year reached new milestones with the deployment of Chinese astronauts born in the 1990s, a world-record spacewalk, and plans to train and send the first foreign astronaut, from Pakistan, to Tiangong next year.
The rapid advances have raised alarm bells in Washington, which is now racing to put a U.S. astronaut on the moon again before China does.
Both countries are also competing in nascent institution-building efforts, with the U.S.-led Artemis Accords on lunar exploration matched up against the Chinese and Russian-led International Lunar Research Station.
-
International Sports3 days agoStar-studded squads set to ignite DP World ILT20 Season 4
-
Latest News3 days ago10 Afghans killed in Farah border shooting by Iranian forces
-
Sport4 days agoAfghanistan deepens ties with Uzbekistan through new cricket development partnership
-
Business3 days agoAriana Airlines deepens cooperation with Turkish Airlines
-
Latest News4 days agoUN Security Council to review rising Afghanistan–Pakistan tensions
-
Sport5 days agoUAE Bulls clinch first Abu Dhabi T10 title with dominant 80-run victory
-
Latest News3 days agoChina urges Tajikistan to protect citizens after border attack
-
Latest News2 days agoSituation along Afghan-Tajik border “not stable,” says Dushanbe
