Add Yahoo as a preferred source to see more of our stories on Google. This NASA/ESA Hubble Space Telescope image features the spiral galaxy Messier 77, also known as the Squid Galaxy. Everything on ...

This video explores what scientists mean when they talk about the edge of the observable universe. Using real observations ...

Since conventional explanations have failed to pony up dark matter, one physicist is looking towards the unconventional. In a series of two papers, physicist Stefano Profumo of the University of ...

The observable universe spans 93 billion light years, but scientists believe it’s at least 400 times larger. If the universe has an edge, it’s expanding into nothingness, challenging our understanding ...