Chandra X-ray Observatory | Quick Look: NASA's Chandra Discovers Giant Black Holes on Collision Course @ChandraXray | Uploaded 1 year ago | Updated 2 hours ago
NASA’s Chandra X-ray Observatory found two pairs of merging ‘dwarf’ galaxies.

These are galaxies about 20 or more times less massive than our Milky Way.

Dwarf galaxies were likely prevalent billions of years ago and grew through collisions.

These galaxies and their black holes will tell us about growth in the early Universe.

More at: https://chandra.si.edu/photo/2023/bh_pairs/