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Gregory Ewing <greg.ewing at canterbury.ac.nz>: > Marko Rauhamaa wrote: >> By the time the event horizon hits Tim at the speed of light, Tim will >> have received all of our Universe's signals at an ever accelerating >> frequency and increasing power. He will have seen the End of the World >> before leaving it. > > I don't think that's right. From the point of view of an infalling > observer, nothing particularly special happens at the event horizon. > Being able to see into the future would count as rather special, I > would have thought. Yeah, you have a point: IF you could stand still, you would see light from behind as blue-shifted, precisely the flip side of gravitational redshifting for distant observers. However, if you were traveling on a free-fall geodesic, you would see no blueshift from light directly behind, because you and it would be in the same inertial reference frame. <URL: http://physics.stackexchange.com/questions/26185/what-will-th e-universe-look-like-for-anyone-falling-into-a-black-hole> Marko

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