Tag: science

Hand-made tale: Indian amputee’s new lower limbs adapt to her body

by Abhaya SRIVASTAVA NEW DELHI, India (AFP) — When amputee Shreya Siddanagowder was offered new hands, the Indian student didn’t hesitate — even though they were big, dark and hairy, and once belonged to a man. Now though, not only have her new hands become more slender, they have also changed color to match her skin tone, mystifying the doctors who carried out the rare 13-hour transplant. “The donor was a tall man with big […]

Earth captures new ‘mini moon’

WASHINGTON, United States (AFP) — Earth has acquired a second “mini-moon” about the size of a car, according to astronomers who spotted the object circling our planet. The mass — roughly 1.9-3.5 meters (6-11 feet) in diameter — was observed by researchers Kacper Wierzchos and Teddy Pruyne at the NASA-funded Catalina Sky Survey in Arizona on the night of February 15. “BIG NEWS. Earth has a new temporarily captured object/Possible mini-moon called 2020 CD3,” likely […]

Katherine Johnson, black NASA mathematician, dies at 101

WASHINGTON, United States (AFP) — Katherine Johnson, a ground-breaking black NASA mathematician whose life was portrayed in the movie “Hidden Figures,” died on Monday aged 101, the space agency said. Johnson’s calculations helped put the first man on the Moon in 1969, but she was little known until the Oscar-nominated 2016 movie that told the stories of three black women who worked at NASA. “She was an American hero and her pioneering legacy will never […]

Trembling Mars gives up more seismic secrets

  PARIS, France (AFP) — Mars is a constantly tremoring “living” body, researchers said Monday as they unveiled measurements of seismic activity on the red planet showing similar tremble rates to Earth or the Moon. For 15 months NASA’s InSight robot craft scoured the surface of Earth’s neighbour, and measured hundreds of so-called “Marsquakes”. These included several tremors that contained the same frequency patterns as tremors caused by the movement of Earth’s own tectonic plates. […]

Stardust or star bust? Betelgeuse’s dimming light puzzles astronomers

PARIS, France (AFP) — Astronomers have managed to take pictures of Betelgeuse showing that the star, one of the brightest in the Milky Way, has been losing luminosity over recent months, the European Southern Observatory (ESO) said on Friday. The mysterious dimming of one of the most visible stars in the Orion constellation has astronomers scratching their heads, with some saying Betelgeuse could be about to explode while others point to passing conditions. “The stunning […]

Jellyfish hurl venom ‘grenades’ to snare prey

PARIS, France (AFP) — A species of jellyfish hunts its prey by hurling venom grenades to create “stinging water”, researchers said Thursday, solving a long-standing mystery as to how they gather food without tentacles. The Cassiopea xamachana jellyfish, found in shallow waters around Florida, the Caribbean and Micronesia, is a frequent nuisance to snorkelers and surfers who appear to get stung without touching the creatures. It was thought that the stings came from detached tentacles […]

Permafrost collapse is speeding climate change: study

by Marlowe HOOD PARIS, France (AFP) — Permafrost in Canada, Alaska, and Siberia is abruptly crumbling in ways that could release large stores of greenhouse gases more quickly than anticipated, researchers have warned. Scientists have long fretted that climate change — which has heated the Arctic and subarctic regions at double the global rate — will release planet-warming CO2 and methane that has remained safely locked inside Earth’s frozen landscapes for millennia. It was assumed […]

Turn back time: how quitting smoking reverses lung cell damage

by Sara HUSSEIN TOKYO, Japan (AFP) — Smokers can effectively turn back time in their lungs by kicking the habit, with healthy cells emerging to replace some of their tobacco-damaged and cancer-prone ones, a new study shows. Smokers have long been told their risk of developing diseases like lung cancer will fall if they can quit, and stopping smoking prevents new damage to the body. But a study published Thursday in the journal Nature found […]

Europe marks 40th anniversary of first Ariane rocket launch

  by Juliette Collen  PARIS, France (AFP) — The first Ariane space rocket lifted off over the forests of French Guiana 40 years ago, enabling Europe to at last take its place as an independent player in the international race for space. Following a number of delays and technical setbacks, Ariane 1 finally left the launch pad in Kourou at 2:13 pm local time on December 24, 1979. Its maiden flight was a so-called qualification […]

Greenland ice loss faster than expected

by Bryan McManus Agence France-Presse PARIS, France (AFP) — The melting of Greenland’s massive ice sheet is happening much faster than expected and could put millions more people at risk by the end of the century, scientists warned Tuesday. Up to three kilometres thick (two miles) in some places, Greenland has lost 3.8 trillion tonnes of ice since 1992, enough on its own to add 10.6 millimetres (1.06 centimetres, 0.4 inches) to sea levels, according […]

Scientists spot black hole so huge it ‘shouldn’t even exist’ in our galaxy

BEIJING, China (AFP) — Astronomers have discovered a black hole in the Milky Way so huge that it challenges existing models of how stars evolve, researchers said Thursday. LB-1 is 15,000 light-years from Earth and has a mass 70 times greater than the Sun, according to the journal Nature. The Milky Way is estimated to contain 100 million stellar black holes but LB-1 is twice as massive as anything scientists thought possible, said Liu Jifeng, […]

‘Kawaii!’ Olympic robot mascots thrill Tokyo students

  TOKYO, Japan (AFP) — Robot versions of Japan’s Olympic and Paralympic mascots thrilled hundreds of school children in Tokyo on Monday, striking sporting poses and displaying hearts in their electronic eyes. The event at a local elementary school was billed as a chance to showcase some of the technology Japan hopes will wow visitors at the Tokyo 2020 Games. Some 600 pupils clapped and shouted “kawaii (cute)!” as the toddler-sized versions of the Tokyo 2020 […]