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[-] april@lemmy.world 18 points 1 day ago

Black holes merge. It doesn't matter what size they are. It's not that the bigger one eats the smaller one they just merge.

[-] Don_Dickle@lemmy.world 1 points 1 day ago

Are we advanced enough to have seen this yet? Not calling you a liar just sounds interesting to watch..

[-] aubeynarf@lemmynsfw.com 9 points 1 day ago

Yes, LIGO has observed the gravitational wave “chirp” from two black holes orbiting each other closer and closer until they join

[-] Don_Dickle@lemmy.world 1 points 1 day ago

I am on my phone at the moment is it LGO or L I G O?

[-] april@lemmy.world 7 points 1 day ago

It stands for Laser Interferometer Gravitational Wave Observatory!

The black holes are so big and fast when they spiral in and merge that they literally create waves in spacetime which change the length of things by a tiny amount as they pass by us and LIGO is able to measure when the two arms of it change length by nanometers and that's where we got the signal.

There's also The Event Horizon Telescope which made radio images of the black hole at the center of our galaxy. We haven't been able to catch a merger with this though.

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this post was submitted on 14 Nov 2024
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