Two black holes colliding must have been a violent event. Hard to fathom what it was like.
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Something tells me we should be glad it happened 3 billion years ago
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Yes. Would not want to be sitting on sidelines for that collision.

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We have one in the WH called Trump.
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@neiltyson Science is just too coolThanks. Twitter will use this to make your timeline better. UndoUndo
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OMG, so THAT's what really caused Hillary to lose!!!
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Diversity is Universal!

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And, I thought I was late!
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@vasego1 Hey Jon! Looks like a photo from one of your Famous Twitter DM Group Sex Parties!Thanks. Twitter will use this to make your timeline better. UndoUndo
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Something tells me we should be glad it happened 3 billion years ago
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Diversity is Universal!

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Can we see the math for that determination?
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I think it was a telescope....can't see MATH making ripples....
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How then did the telescope determine the number of years?
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Light travels thru space...some of the starlight we see every night comes from stars that were shining years ago. It just took the light
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