At the end of the Universe, long after the last shining stars flickered, there could be one last explosion. Named black dwarf supernovae, these dazzling explosions will announce in the eternal darkness as the Universe falls asleep, a new study suggests. These newly proposed supernovae are a special race that …
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There’s a lot going on in the center of our galaxy. The core of the Milky Way is home to a supermassive black hole as massive as 4 million Suns named Sagittarius A *, and the surrounding environment is intense. Blowing from this region is a nuclear galactic wind. It …
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Former Vice President Joe BidenJoe BidenThe Memo: Democrats pitch Biden as the back-to-normal candidate Obama congratulates Biden with formal nomination Jill Biden gives personal portrait of man Joe MOREhis decision to appoint Sen. Kamala HarrisKamala HarrisSusan Rice: Trump ‘is a liar and the whole world knows it’ Biden compares relationship …
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About 15,000 light-years away, an active black hole periodically appears to illuminate another unremarkable cloud of gas with gamma rays. But there is a catch. The gas cloud is about 100 light-years from the black hole – and just how the cloud pulsates with it in time is a mystery. …
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We found the fastest known star in the Milky Way. In the extreme environment at the center of our galaxy is a newly discovered star named S4714 around the supermassive black hole Sagittarius A *. On its orbital journey, S4714 reaches a speed of about 8 percent of the speed …
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