Andromeda Galaxy—The nearest ... Most of the universe is evidently made of dark matter. Its nature is yet to be determined. Dark matter halo—A roughly spherical halo of dark matter that ...

Andromeda XXXV is what astronomers term an ultra-faint dwarf galaxy, which is exactly what it sounds like. These tiny, dim stellar conglomerations are common in the universe, but tricky to observe ...

This was the birth of our modern universe of galaxies, so poetically celebrated in Seeing in the Dark. Today, astronomers have measured the distance to the Andromeda Galaxy much more precisely ...