Science & Technology
World’s largest iceberg breaks free, heads toward Southern Ocean
The world’s largest iceberg is on the move for the first time in more than three decades, scientists said on Friday.
At almost 4,000 square km, the Antarctic iceberg called A23a is roughly three times the size of New York City, Reuters reported.
Since calving off West Antarctica’s Filchner-Ronne Ice Shelf in 1986, the iceberg — which once hosted a Soviet research station — has largely been stranded after its base became stuck on the floor of the Weddell Sea.
Not anymore. Recent satellite images reveal that the berg, weighing nearly a trillion metric tonnes, is now drifting quickly past the northern tip of the Antarctic Peninsula, aided by strong winds and currents.
It’s rare to see an iceberg of this size on the move, said British Antarctic Survey glaciologist Oliver Marsh, so scientists will be watching its trajectory closely.
As it gains steam, the colossal berg will likely be launched into the Antarctic Circumpolar Current. This will funnel it toward the Southern Ocean on a path known as “iceberg alley” where others of its kind can be found bobbing in dark waters.
Why the berg is making a run for it now remains to be seen.
“Over time it’s probably just thinned slightly and got that little bit of extra buoyancy that’s allowed it to lift off the ocean floor and get pushed by ocean currents,” said Marsh. A23a is also among the world’s oldest icebergs, Reuters reported.
It’s possible A23a could again become grounded at South Georgia island. That would pose a problem for Antarctica’s wildlife. Millions of seals, penguins, and seabirds breed on the island and forage in the surrounding waters. Behemoth A23a could cut off such access.
In 2020, another giant iceberg, A68, stirred fears that it would collide with South Georgia, crushing marine life on the sea floor and cutting off food access. Such a catastrophe was ultimately averted when the iceberg broke up into smaller chunks — a possible end game for A23a as well.
But “an iceberg of this scale has the potential to survive for quite a long time in the Southern Ocean, even though it’s much warmer, and it could make its way farther north up toward South Africa where it can disrupt shipping,” said Marsh.
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.
Science & Technology
Cyberattack disrupts Heathrow, Berlin and Brussels airports
Brussels Airport asked airlines to cut half their flights through Monday, warning of up to 140 additional cancellations.
Flight operations at three of Europe’s busiest airports were thrown into disarray over the weekend after a cyberattack struck Collins Aerospace’s MUSE software, a key system used for passenger check-in and boarding.
The attack, which began on Saturday, September 20, crippled digital services at London Heathrow, Berlin Brandenburg, and Brussels Airport, forcing airlines to revert to manual check-in and baggage handling.
Passengers faced hours-long queues, handwritten luggage tags, and widespread delays.
According to aviation analytics firm Cirium, 35 departures and 25 arrivals were cancelled on Saturday alone, with Brussels suffering the worst impact. The disruption continued into Sunday, with 38 departures and 33 arrivals cancelled across the three hubs.
Brussels Airport asked airlines to cut half their flights through Monday, warning of up to 140 additional cancellations.
Collins Aerospace, a subsidiary of RTX Corporation, said it had isolated affected systems to contain the breach, though no timeline for full restoration was given.
National cyber security agencies in the UK, Germany, and Belgium are investigating, but the nature of the attack—whether ransomware, denial-of-service, or state-backed—has not been confirmed.
While air traffic control and flight safety were not compromised, the incident underscored growing vulnerabilities in aviation technology.
Industry reports show cyberattacks on the sector surged by 600% between 2024 and 2025.
The European Commission described the disruption as “serious but not systemic,” but experts warn the incident highlights risks of overreliance on centralized digital platforms.
Airports have advised passengers to arrive at least three hours early and check airline apps for updates.
With airlines scrambling to rebook affected travelers, officials caution that knock-on delays could extend into the coming week.
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