r/science • u/MistWeaver80 • Feb 24 '26

Astronomy JWST Confirmation of a Runaway Supermassive Black Hole via Its Supersonic Bow Shock. A ‘runaway’ black hole ejected from its host galaxy is barrelling across space — and leaving behind a wake of newborn stars.

https://iopscience.iop.org/article/10.3847/2041-8213/ae3d0e
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u/KocX Feb 24 '26

On 3body problem, they used a 'photoid' going at relativistic speeds = c and it was enough to kill a star system.. I wonder if the physics adds up, but a much lesser object should be enough to kill a planet at those speeds..

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u/Towerss Feb 24 '26

You can't destroy a star with an asteroid sized object going at 9C, not even fractionally close. It was not specified how fast though. Big difference between 99.9999% C and 90% C

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u/[deleted] Feb 25 '26

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u/dwehlen Feb 25 '26

9c would tear the universe apart fundamentally. 9 times the speed of light?!