Few scientists have spoken as bluntly about humanity’s future as Stephen Hawking. One of his predictions was about the fate ...

Our best observations can't come up with a single answer for how quickly the universe is expanding. Maybe that's because our galaxy is at the center of a giant void. When you purchase through links on ...

The Andromeda galaxy is surrounded by a constellation of dwarf galaxies that are arranged in a highly lopsided manner. Analysis of cosmological simulations published in Nature Astronomy reveal that ...