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03-05-2006
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| Astronomy Q&A
If you have questions or are wondering how something about astronomy works, post it here!
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03-05-2006
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Yep, just got to wait for someone who wants to know something....I know quite a bit about Astronomy from BAUT, if anyone has a question post it and I will try and help!
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03-05-2006
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Ok, Dragon Star I have a question, but I think it is a kind of difficult one. I was reading an interesting article on Black Holes the other day. There was a part I did not quite understand though. I was reading a part about what it would be like if a person could orbit a Black Hole. There was a a part that said: Black Holes warp space so much that if you could orbit a Black Hole close to the event horizon, you could see the back of your own head...light reflecting from the back of your head would get bent around the Black Hole so that you can see it. I don't quite understand why? |
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03-05-2006
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Well, that is what is thought to happen around a black hole with the light because a black holes immense gravity is sooo powerful, it can warp the light around you, as for the possibility of seeing the back of your head? No, I highly doubt it because condition would have to be perfect, you would have to be facing the direction opposite of the gravitational waves for the light to pass in from of your face. The thing about black holes is it so severely warps time/space that time it's self slows down for anything observing from the outside. Example: John is watching Jane fall into a black hole, as she gets closer, John notices that Jane starts to slow down, but the fun part is Jane is still going at what seems to her as normal speed, and everything happens relative to her as the same (meaning even stuff that is close to her is going at the same speed). Eventually it gets to the point where it takes billions of years for Jane to even get close to the singularity in John's time, but in Jane's time it is passing by in seconds! So my point is that the thing with black holes is they can never be tested, so we will never know exactly what happens. |
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03-05-2006
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This is the part of the article I mentioned: . Quote:
I found the following link quite interesting: http://antwrp.gsfc.nasa.gov/htmltest/rjn_bht.html Quote:
Diana |
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03-05-2006
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I think what they are implying in your quote is that if you could orbit around the black hole before the bent light passed it, you would see yourself, from the back. I think you would have to be traveling faster than the light being bent by the black hole though.  |
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03-05-2006
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I am sure you could see light from the back of your head, but the chances of it staying as an image of your head is not going to happen because the gravity swings in waves, which twist and crush together riping everything between them apart, and I am sure the the gravity would be twisting the image around your head the same. Probably see colors is all, and only if you were facing in the direction of gravitational pull. Nothing in the universe can resist the riping and crushing of the tidal forces produced by gravity, which means that this is an impossibility to do in the first place, but it is an interesting thing to think about. |
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03-05-2006
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03-05-2006
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But if you were orbiting around the black hole on the outer edges of the event horizon, it might be possible to catch the light bending around the black hole...(does that make sense?) BUT - wouldn't you have to be moving much faster than the light to make it all the way around the black hole before that light was gone? It makes sense in my mind, but I think it is a hard thing to explane, so I might just be making things more confusing... |
