Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: A-wal on 20/03/2019 11:12:25
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This question is related to the last one but is an entirely different question so I hope it's okay for them to have separate threads.
If two observers are falling towards a black hole, one behind the other then can the closer object reach and cross the event horizon from the perspective of the more distant observer before they themselves reach the horizon?
If the answer is yes then how does the closer object after crossing the horizon from the more distant observer's perspective then reemerge from inside the horizon if the more distant observer accelerates away before reaching the horizon themselves?
If the answer is no then all falling objects must reach the event horizon simultaneously so how could any object ever reach an event horizon if they can't reach it from the perspective of an observer falling in behind them?
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Why are the titles the same? Can you edit the title to make them easier to tell apart please?
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They're not the same. They're similar because they describe a similar but distinctly different situation.
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https://www.thenakedscientists.com/forum/index.php?topic=52973.msg444716#msg444716
This might be worth a look. If I remember rightly, there were some interesting responses, including a detailed one by Pete.