Tuesday, December 10, 2019

Collisions of Galaxies


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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