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2 votes

Did the Late Heavy Bombardment Period Happen Because of a Stellar System Collision?

If a star was ping-pong ball size, even the dense cores of colliding galaxies would be like ping-pong balls flying past, 540 miles apart. A star is about 5 light-seconds across and the average ...
Miss_Understands's user avatar
7 votes
Accepted

Does the Final-Parsec problem apply to stellar collisions?

The "final parsec problem" describes the difficulty in getting two supermassive black holes close enough together that their merger timescale due to gravitational wave emission becomes ...
ProfRob's user avatar
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10 votes
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Can a Nova occur outside of a binary star system?

To form a classic nova you need a white dwarf to be accreting matter, specfically hydrogen, onto its surface. The "obvious" source of this matter is another star that is very close to the ...
James K's user avatar
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