/u/Anne__Frank's posts in /r/askscience

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(Physics) If you had 3 masses, A B and C where C is stationary and A and B are traveling in opposite directions at 80% the speed of light, is A not traveling faster than the speed of light relative to B?

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If the universe was a single point before the big bang, and nothing can travel faster than the speed of light, does that imply the universe has an edge and a radius of 13.7 billion light years?

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How long ago were all solar eclipses total eclipes?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
(Physics) If you had 3 masses, A B and C where C is stationary and A and B are traveling in opposite directions at 80% the speed of light, is A not traveling faster than the speed of light relative to B?	1
If the universe was a single point before the big bang, and nothing can travel faster than the speed of light, does that imply the universe has an edge and a radius of 13.7 billion light years?	1
How long ago were all solar eclipses total eclipes?	1