In July, researchers using the NASA-funded Asteroid Terrestrial-impact Last Alert System survey telescope in Chile made an ...

Signals from a distant world have pushed the search for alien life out of science fiction and into the realm of testable ...

"How do you get to Mars when the launch vehicle is not necessarily going to Mars?" ...

Scientists have discovered a rogue planet roaming the Milky Way after combining observations from Earth and a space telescope ...

What seemed like new planets around Fomalhaut were actually expanding dust clouds from violent planetary collisions seen by Hubble.