Ask the Experts - Astronomy and Astrophysics

Someone kindly explain,please.My atoms left the spot of the 'BIG BANG' at it's ocurance some 15 billion years ago.They traveled at a relatively slow rate compared to the speed of light.therefore,would not the light generated at BIG BANG time have passed me by and been long forgotten.Yet,we get reports of light from near the time of the BIG BANG just being received as if we had been here all along awaiting it?

Given that space is expanding, why is it that it is still '3,000 miles' from New York to San Francisco? Why is it that the volume of the space in a crystal lattice of, say, NaCl, still X cubic Angstroms? Doesn't 'local' space expand too?

Would not the speed of a light beam headed toward a black hole increase tremendously? We do know it could be bent by the gravity of a star.

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Ask the Experts - Astronomy and Astrophysics

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