Posted: May 04, 2010 4:26 am
by Durro
Q1/ Can he help me get my head around the expansion of space and time after the big bang apparently happening faster than the speed of light ? Is the faster-than-light thing real, or is it some consequence of everything moving at the speed of light after the instantiation of the universe causing some weird time dilatation thing that makes it appear that the universe expanded at a rate faster than light speed ? Did time effectively slow down as we now observe it because of all of the relativistic light speed energy streaming out in all directions ?

Q2/ Dark matter - Call me crazy, but could "dark matter" actually be light photons and other electromagnetic radiations filling the universe ? There is apparently a huge amount of unaccounted for "mass" within the known universe that affects things. But we know that light, x-rays, gamma rays, ultraviolet light and microwaves, etc, impart energy on objects they encounter. Energy and mass are interchangeable aren't they ? Is it possible that the stuff we don't "see" and call dark matter is actually all of the radiated electromagnetic radiation filling the universe ? If not, then what is the likely nature of "dark matter"

Q3/ As a science educator, does Dr Tyson view the fact that nearly half of his countrymen and women believe the literal interpretation of the Biblical genesis over the science of evolution as something to despair over or does it increase his resolve to keep trying to educate the ignorant masses ?