Tim Daughters
asked
Neil deGrasse Tyson:
I'm currently reading Astrophysics for People in a Hurry. You will probably not be surprised that I find the first second after the Big Bang to be hard to comprehend. In particular, you say that after 1 second, the universe has grown to a few light years across. Why doesn't this violate the universal speed limit of the speed of light?
Neil deGrasse Tyson
The speed limit of light -- it's not just a good idea, it's the law -- applies to anything moving through space and has no impact on the expansion of space itself. So all is well in the early universe.
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G.G. Melies
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Neil deGrasse Tyson:
Is there an estimated date to test a VASIMR engine and take humanity to Mars in 39 days?
Kaeden
asked
Neil deGrasse Tyson:
If people take one thing away from this book, what do you hope it will be?
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