A satellite galaxy is a smaller galaxy, typically a dwarf, that is gravitationally bound and orbits a larger host galaxy. These companion galaxies may eventually be tidally disrupted or merge with their hosts, and often contain between a few thousand and a few billion stars.
Source: esa.int
02/05/2025
31/12/2024
01/11/2024
29/10/2024
02/10/2024
27/09/2024
03/07/2024
02/07/2024
15/03/2024
08/03/2024
27/04/2023
13/04/2023