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 Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...The Space and Astronomy Agora RE: RE: This A Different Message Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response ToPosted by CL on October 17, 2000 02:31:54 UTC

Whoa Whoa Whoa........HOLD ON JUST A SECOND!!! Aircraft in space??? (engine won`t work). Fan at the bottom of a black hole?? Even if your being analogistical, that`s way to far from actuality. There is no work involved in avoiding capture by a black hole if you fly at it fast enough because there is no local deceleration due to friction. All motion without acceleration in space is inertial, and doesnt involve work. (If there is friction, the amount is negligable as compared to the great velocities and collosal forces involved). All you have to do to not be captured by a black hole is move past it at a fast enough velocity at a great enough distance. Take a given distance from an event horizon, if you were to move with just enough speed you would orbit this "huge dent in the universe". Move faster and you start pulling away. Move any slower and you start "rolling toward the bottom of the bowl" (a bowl that has an asymptoticaly shaped bottom but that`s not important). At a certain point no amount of speed could "roll you back out" (the event horizon in fact). The "work" you are describing with the hand concept is completely different than the concepts of motion and gravitation in space. Moving your hand over a mug on Earth does require work (why should your hand be any more attracted to the inside of the mug than the outside anyway?), moving at a constant velocity through space does not. By the way, a black hole doesn`t suck you in.....You attract the blackhole to yourself just as much as the blackhole attracts you to it. It seems that you try to visualize a blackhole as being a vaccum cleaner in an gaseous environment (atmosphere/pressure/etc.) with airplanes flying around it trying no to be sucked up, when in actuality it deals with a whole different kind of physics.