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Joshua

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13 What will happen to the shape of a galaxy when a super massive black hole lying in its center dies(evaporates out)? May 30 '18
2 Is a perfectly circular orbit possible? Sep 17 '17
2 Could Venus or Mercury have a moon that we haven't detected? Jun 27 '17
1 How do we know Nemesis is not a black hole (or neutron star)? Sep 26 '19
0 Are there are any photographs online that approximate what the Milky Way looks like to the unaided eye? Oct 10 '15

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