Space

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Galaxies are already pretty huge, billions to trillions of stars whirling around a supermassive black hole. But that’s not where their influence ends. A large, spherical halo of gas surrounds a galaxy, reaching vastly farther than the main population of stars, a bit like a galactic atmosphere. Hubble observations of our nearest galactic neighbour, Andromeda,
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SpaceX is aiming to launch three rockets on Sunday, including two back-to-back Falcon 9 launches in Florida and a Starship test flight in Texas, if weather permits. The aerospace company said it intends to launch its twelfth Starlink mission at 10:12 am EST from the Kennedy Space Center in Florida, sending 60 Starlinks into orbit. The second
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For as long as there has been a Universe, space has been expanding. It winked into existence roughly 13.8 billion years ago, and has been puffing up ever since, like a giant cosmic balloon. The current rate of this expansion is called the Hubble constant, or H0, and it’s one of the fundamental measurements of
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Wormholes are a popular feature in science fiction, the means through which spacecraft can achieve faster-than-light (FTL) travel and instantaneously move from one point in spacetime to another. And while the General Theory of Relativity forbids the existence of “traversable wormholes”, recent research has shown that they are actually possible within the domain of quantum
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A car-size asteroid flew within about 1,830 miles (2,950 kilometers) of Earth on Sunday. That’s a remarkably close shave – the closest ever recorded, in fact, according to asteroid trackers and a catalogue compiled by Sormano Astronomical Observatory in Italy. Because of its size, the space rock most likely wouldn’t have posed any danger to people on
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Just as you thought it was safe to go back to ignoring Betelgeuse, the red giant star started acting up again. After its first round of dimming, and then brightening, Betelgeuse has now started to dim once again. Moreover, this new dimming is inconsistent with Betelgeuse’s current brightness variation cycle – so, once again, the
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NASA’s Perseverance Mars rover launched from Cape Canaveral, Florida, on 30 July, carrying a host of cutting-edge technology including high-definition video equipment and the first interplanetary helicopter. Many of the tools are designed as experimental steps toward human exploration of the red planet. Crucially, Perseverance is equipped with a device called the Mars Oxygen In-Situ Resource Utilization Experiment, or
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After a two-month gap, SpaceX has resumed launching batches of dozens of satellites in its gambit to blanket Earth with high-speed internet access. The satellites are a new “VisorSat” variety to make them less shiny to the ground and especially to astronomers’ telescopes. But researchers say the spacecraft’s experimental new feature, while helpful, won’t fully