Astronomers say they have traced a mysterious pulsing in the Milky Way to a surprising source: a dead star locked in a dance with another star
Energy Signals From Milky Way's Core Hint at New Type of Dark Matter
A U-Michigan led team of researchers has discovered Andromeda XXXV, the smallest and faintest known galaxy orbiting Andromeda, the Milky Way's major galactic neighbor. The find challenges past theories on evolution and star formation in satellite galaxies.