A star projector is a great way to create your own home planetarium or give a child's room that cosmic feel. But is it worth buying one in 2024's Black Friday sales? Black Friday is just around ...

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The black hole, V404 Cygni, was already known to be circled by a nearby star every 6.5 days. It is likely stripping this stellar companion of matter. (Image credit: NASA's Scientific Visualization ...

Cochran and A. Hatzes, and G. Marcy and R. P. Butler 16 Cygni B has two stellar companions: 16 Cygni A at a distance of ~900 AU, and 16 Cygni C at an angular separation of ~70 arc seconds ...

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But astronomers said finding this new system – comprising a black hole named V404 Cygni and two stars – is “super exciting” ...

which only occurs in the final stages of a star's life. "We've never been able to do this before for an old black hole," Burdge said. "Now we know V404 Cygni is part of a triple, it could have ...

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The team now believes that contrary to being born following a violent explosion of a dying star (a supernova), V404 Cygni was formed through a more gentle process some four billion years ago.

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The system, called V404 Cygni, was thought to be a black hole and a companion star, but a second star billions of kilometres away was also found to be gravitationally connected to the duo.

"Overall, it's not surprising that black holes should be in triples, but what's surprising is that this system held onto the outer star after forming the black hole." Astronomers have discovered ...