6 ms·
Rather confused. 225 solar masses isn’t gigantic by any means
by david38 1y ago
Rather confused. 225 solar masses isn’t gigantic by any means
- NooneAtAll3 1y agoit's above what's considered possible to create by usual star collapse means https://en.wikipedia.org/wiki/List_of_most_massive_stars https://en.wikipedia.org/wiki/List_of_most_massive_stars lists only 2 stars more massive than that
- thaumasiotes 1y agoSo if you have two black holes within each other's event horizons, but they're too big to collide, what's supposed to happen instead?
- pfdietz 1y agoThe situation you describe is impossible. "If you have a very large positive number that is less than zero, what happens?"
- thaumasiotes 1y agoWhat's the contradiction in the black hole setup?
- naasking 1y agoI'm not even sure what it would mean for two black holes to be too big to collide, or where that became some kind of constraint.
- dskloet 1y agoI thought it was just thought that it would take too long for them to spiral into each other for it to have happened enough times in our universe
- IAmBroom 1y agoYou're imagining some moment where two points merge. These aren't points; they are (literally) opaque volumes of space, and once their outer limits broach, they have collided. By analogy, two warships can collide, even though their centers of mass don't.
- thaumasiotes 1y agoIt would be difficult for two warships to collide without some of the material in one warship touching some of the material in the other one. But there is no matter at an event horizon. That's just an imaginary line in space. It's opaque, but not solid. If the black holes were moving fast enough, it should be possible for their event horizons to cross and then uncross, although that would immediately raise the question of what would happen to matter in the zone of overlap. Perhaps "fast enough" would exceed the speed of light?
- pfdietz 1y ago> If the black holes were moving fast enough, it should be possible for their event horizons to cross and then uncross, No, that is not possible.
- thaumasiotes 1y ago...because?
- GoblinSlayer 1y agoTime dilation is infinite at the even horizon, so anything that touches it, freezes for good.
- naasking 1y agoInfinities are typically indications of where a theory breaks down, not of something real.
- pfdietz 1y agoIf one is within the other's event horizon, they have already collided (and are now surrounded by a common event horizon).
- chasil 1y agoI have read elsewhere that all black holes are imploding, and there will be a "bounce" followed by matter emerging from the event horizons. https://www.popularmechanics.com/space/deep-space/a65038572/black-hole-universe/ https://www.popularmechanics.com/space/deep-space/a65038572/...
- pfdietz 1y agoGR doesn't say any such thing, and anything beyond GR is speculation.
- deleted 1y ago[deleted]
- raverbashing 1y agoNothing is too big to collide, the issue here are the initial masses which are bigger than expected from core-collapse stars
- idiotsecant 1y agoI don't know if there's ever been a more perfect setup for a your mother joke, but sometimes art is the brush strokes you don't make.
- Bluestein 1y agoI'll counter Debussy ("the space between the notes ..." and all that :) ... and give it a go: "Yo mama is so big she can't even collide with a black hole" (or something ...)