List of All Articles with Tag 'an'

FREMONT, Calif.--(BUSINESS WIRE)--Nov 30, 2023--

OTTAWA Canada and the United States have finalized a deal to buy up to 16 Boeing Poseidon aircraft

A meteorite which smashed into earth 29m years ago may be behind a strange yellow glass found in a certain part of the desert in southeast Libya and southwestern Egypt, according to researchers. The Great Sand Sea Desert stretches over about 72,000 square kilometres across the two countries, and is the only place where the mysterious yellow material is found on Earth. Researchers first described it in a 1933 scientific paper, calling it Libyan desert glass. Mineral collectors have long valued it for its beauty and mysterious qualities – and it was even found in a pendant in Egyptian pharaoh Tutankhamun’s tomb. The origin of the glass has been a mystery for centuries, but researchers writing in the journal De Gruyter used new advanced microscopy technology to get answers. Elizaveta Kovaleva, a lecturer at the University of the Western Cape, wrote that the glass was caused by “the impact of a meteorite on the Earth's surface”. Writing in The Conversation, she said: “Space collisions are a primary process in the solar system, as planets and their natural satellites accreted via the asteroids and planet embryos (also called planetesimals) colliding with each other. These impacts helped our planet to assemble, too.” She said: “We studied the samples with a state-of-the-art transmission electron microscopy technique, which allows us to see tiny particles of material – 20,000 times smaller than the thickness of a paper sheet. “Using this super-high magnification technique, we found small minerals in this glass: different types of zirconium oxide (ZrO₂).” One of the types of this mineral found in the glass can only form at temperatures between 2,250 celsius and 2,700 celsius. Toasty. Kovaleva said: “Such conditions can only be obtained in the Earth's crust by a meteorite impact or the explosion of an atomic bomb.” However, she wrote, there are just as many questions as there are answers. The nearest known meteorite craters are too far away and too small to be the cause of that much glass all concentrated in one part of the world. “So, while we've solved part of the mystery, more questions remain. Where is the parental crater? How big is it – and where is it? Could it have been eroded, deformed or covered by sand?” Safe to say, the scientists will keep on looking until they have the answers. How to join the indy100's free WhatsApp channel Sign up to our free indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

By Mumal Rathore BENGALURU The Bank of Canada will start cutting interest rates in the second quarter of

By Suzanne McGee GraniteShares plans to increase the amount of leverage on most of its single-stock exchange-traded funds

During Tuesday's game, Chris Paul went to the locker room and never returned for the Warriors. Check out CP3's status for tonight's game against the Clippers.

The St. Louis Cardinals have filled their starting rotation. However, they are far from done, and these three players could help them out in 2024.

With the Chicago Bulls seemingly preparing for a fire sale, Zach LaVine is set up as the first trade domino to fall.

By David Shepardson WASHINGTON General Motors said on Thursday it expects significant reductions in electric vehicle production costs

By Laura Sanicola (Reuters) -Oil prices fell on Thursday after rising by more than 1% earlier in the session after

Life forms surviving under sea ice have it pretty tough at the best of times, but they face a threat rarely caught on camera which is as terrifying as anything on the planet. BBC crew captured a brinicle on film for the first time for the BBC series Frozen Planet in 2011 and the natural feature resembling a deathly ice finger is the stuff of nightmares. A brinicle forms under sheets of sea ice, pushing downwards and posing existential risks to life forms on the ocean floor. As shown in footage captured for BBC Earth Unplugged, the natural formations can trap creatures and prove deadly – but how do they form? Well, salty water surrounding sea ice can form channels and inlets within blocks of ice. Ice then protrudes through the salty water and heads downwards as the salty water is heavier than the water around it. The salt water also freezes at a lower temperature to the water around it, meaning that it freezes everything it touches as it descends. Safe to say, if you see one of these heading towards you, you’d better start praying. It comes after it was discovered that the world’s biggest iceberg is drifting away from the Antarctic after having been grounded there for more than 30 years. The iceberg, which has the catchy name A23a, split from the Antarctic’s giant Filchner Ice Shelf in 1986, but has been stuck to the ocean floor since shortly after that time. Now, according to the British Antarctic Survey, it is on the move. Sign up for our free Indy100 weekly newsletter How to join the indy100's free WhatsApp channel Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings

A revised look at the 2023 NFL Draft's top 10 picks — how rookie performances are reshaping initial impressions and draft choices.