Quote:
Originally Posted by Zoxxa
Yea, that was my annoying science teachers wet dream, to send an impossibly powerful telescope faster than the speed of light out into the universe and point it back at earth so he could see the dinosaurs.
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It would be possible if wormholes weren't just theory..
First of all, Schwarzschild came up with this:
ds2 = -(1-2GM/r)dt2+(1-2GM/r)-1dr2+r2dΩ2
with dΩ2 being the normal differential portion of a sphere: dθ2+sin2θdφ2
With math, you can convert to Kruskal coordinates:
X2 - T2 = (r/(2GM)-1)er/2GM
and
T/X = tanh(t/4GM)
Then you can conclude that the event horizon = r > 2GM
Which means that the singularity at the center of the black hole: X2-T2 = -1
Which gets X2-T2 < -1 which is physically impossible.
Well, I guess not since at T=0, there is a hole, but the objects going through wouldn't be able to if they're going slower than the speed of light since t!=0 closes up the hole..
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