Space

The curvature of empty space caused by an entire galaxy has now been pinned down with unprecedented precision, demonstrating Einstein’s theory of general relativity still rules on a super-sized scale. Not that anybody is seriously surprised. But on the off chance the results had failed to meet expectations, they might have provided insight into some
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Almost all the large vertebrates on Earth suddenly went extinct 66 million years ago – including dinosaurs, mosasaurs, plesiosaurs, and pterosaurs. A city-size asteroid or comet is thought to be responsible for that mass extinction. The impact, called the Chicxulub event, triggered global cooling and volcanic eruptions that transformed Earth. In the 1980s, Richard Muller,
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Chris Hadfield, most widely known for his zero-gravity guitar-playing, has seen an impressive amount of space travel. Between his first spaceflight in 1995, his second in 2001, and a third in 2013, Hadfield has flown inside NASA space shuttles, a Russian Soyuz spacecraft, and the International Space Station. Hadfield, who’s now retired, shares his expertise
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Particles collected from Earth’s upper atmosphere, originally deposited by comets, are older than our Solar System, scientists say – and these fine bits of interstellar dust could teach us about how planets and stars form from the very beginning. These cosmic particles have lived through at least 4.6 billion years and travelled across incredible distances,
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The source of a mysterious microwave glow detected across our galaxy eluded astronomers for decades. But now a crack team has finally pinpointed the source: nanoscopic particles of crystalline carbon, otherwise known as diamond dust. There are several environments across the Milky Way that produce a faint glow known as anomalous microwave emission (AME). Scientists
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During the 1970s, astronomer became aware of a massive radio source at the center of our galaxy that they later realized was a Supermassive Black Hole (SMBH) – which has since been named Sagittarius A*. And in a recent survey conducted by NASA’s Chandra X-ray Observatory, astronomers discovered evidence for hundreds or even thousands of black holes located in
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