Spanning approximately 220,000 light-years across, the Andromeda Galaxy is the largest galaxy of the Local Group, which also ...

The Hubble Space Telescope launched on April 24, 1990, aboard the Space Shuttle Discovery (STS-31), and deployed into Earth ...

"All the odd shapes and swirling gas observed in the Perseus cluster now make sense within the context of a major merger." ...

They look like ordinary soldiers, but there’s far more beneath the helmet. This video uncovers the hidden roles, secret identities, and surprising histories behind some of the most misunderstood ...

When the largest of stars dies, the supernova they produce can outshine a whole galaxy, and potentially sterilize vast swathes of space. Future civilizations will need to be able to prevent or ...