The Hubble Space Telescope has been snapping pictures of the universe for the best part of 35 years, and now astronomers have completed a magnificent 417-megapixel photomosaic of the Andromeda galaxy.
One of the great places to look for dwarf galaxies is the halo of the Andromeda galaxy (also known as Messier 31, or M31 for short), due to its relative proximity. UNIONS is so far the deepest ...