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Re: Black Hole Question

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Posted by jessie and alice on July 12, 1997 19:47:47 UTC

: : : : Let's say that you were just outside the event horizon of a black hole. Would it be the case that you would be pulled into the black hole if you were not travelling near the speed of light?: Well, first thing is first. Travelling the speed of light is impossible, therefore irrelevent. Next, if someone were to be perched outside a black hole, the gravitational force would indeed pull you near or possibly into it. In our case, reaching a black hole would be incredible, but probably impossibe.....: Hi, Adam! I'd like to correct a couple of things you said. First of all, I know that travelling AT light speed is impossible. That's why in my original question I asked about travel NEAR light speed, rather than AT light speed itself. Theoretically, we should be able to travel NEAR light speed provided we don't accelerate too quickly. At that speed, it occurs to me that we should be able to orbit a black hole just outside its event horizon as a satellite. In this case, our centripetal acceleration would equal the acceleration due to the black hole's gravity (g=v2/r, where g is gravity, v is our speed, and r is our distance from the singularity). Of course all of this is moot since current technology is limited, and it would take many, many years to even reach a black hole. Also, the gravity just outside the event horizon would be far too great for our bodies to withstand, so some sort of unmanned spacecraft might have to suffice.

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