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Sep
25
answered If nothing travels at the speed of light, except light, how can a black hole also pull light into itself?
Sep
24
comment Do all the objects in the universe exert force on all other objects?
@Timtech Yes - every atom (that we know of) does.
Sep
24
answered Do all the objects in the universe exert force on all other objects?
Sep
24
awarded  Suffrage
Sep
24
comment How many stars can stay close to each other without collapsing?
Sure, if you could get them to orbit eachother.
Sep
24
wiki created clock excerpt
Sep
24
suggested approved edit on clock tag wiki excerpt
Sep
24
awarded  Nice Answer
Sep
24
revised atmosphere wiki excerpt
added 69 characters in body
Sep
24
revised orbit wiki excerpt
added 110 characters in body
Sep
24
revised How would the pocket cellular clock work?
grammar fixings
Sep
24
wiki created orbit excerpt
Sep
24
suggested approved edit on orbit tag wiki excerpt
Sep
24
wiki created atmosphere excerpt
Sep
24
suggested approved edit on atmosphere tag wiki excerpt
Sep
24
suggested approved edit on How would the pocket cellular clock work?
Sep
24
awarded  Talkative
Sep
24
awarded  Critic
Sep
24
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Sep
24
awarded  Quorum