This is the post from a while ago -
"They say a light year is the distance travelled by light in 1 year. So now if some star is said to be 10 billion light years away, it means it must take light some 10 billion years to get to us, which means that whatever we are seeing of that star at this time is actually 10 billion year old story & what may exist that far right now might be very different than what we can see"
Analogous to the above concept, theoritically, anything travelling (towards us) faster than light would always be invisible, isn't it? If, at this time, something is headed for earth, travelling faster than light, we will never even see it before we are hit. Armageddon without warning... any of you think that could be a possibility?
2006-07-15
15:49:45
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20 answers
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asked by
ngt_765
2
in
Astronomy & Space