I do agree that even in the event of a major merger between
two galaxies, the chances of a star to star head on collision is highly
unlikely
I believe the closest separation between two stars even in
the crowded center of each galaxy would be at least half a light year apart
giving practically no chance of any collision
What is possible are the immense spread of gas clouds that diffuse
between the stars
Thus, an aggregation of clouds during a major galactic
merger may give a higher chance of stellar formation due to their combined masses,
at least this is just my belief
Reply from University of Oxford
In reply to Ju Boo Lim by Dr. Grant Miller PhD
(Astrophysics), University of Oxford -
Thursday, 10 October 2019, 5:08 PM
This is right! Stars do not actually physically collide
during galaxy mergers, but the gas density increases and this can lead to the
formation of new stars.
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