Day 6 of the 2024 Space Telescope Advent Calendar: a galactic collision. This Hubble image features Arp 122, a galaxy that actually comprises two vast galaxies colliding with each other—NGC 6040 ...
This suggests that NGC 5084 is host to a supermassive black hole tipped on its side, and scientists think it could be evidence of a galactic collision in NGC 5084’s recent past.
Observations show Andromeda has a more active star formation history than the Milky Way, potentially due to a past galactic collision. NASA recently released images of the Andromeda galaxy ...