<img src=”https://naked-science.ru/wp-content/uploads/2025/03/andromeda_xxxv_zoomed_out.jpg” alt=”Andromeda Nebula Has the Faintest Satellite Galaxy”/>Two decades ago, astronomers discovered that large galaxies have small, barely noticeable satellites. It turned out that the Milky Way has dozens of them, and the Andromeda Nebula has almost 20. These ultra-faint “dwarfs” that accompany their giant hosts are saturated with dark matter. Most of them show early star formation. Sky surveys such as the Pan-Andromeda Archaeological Survey (PAndAS) help find satellites around large galaxies. This time, the faintest and most compact satellite galaxy was “fished out” from its archive.