The planet is six times more massive than Earth, but colder than our home planet.

This NASA Hubble Space Telescope image reveals an enigmatic galaxy with a bright center and a face that hints at spiral ...

Add Yahoo as a preferred source to see more of our stories on Google. This jet streaming out of a supermassive black hole is traveling at nearly the speed of light. Superman may fly faster than a ...

NORFOLK, Va. — A light year is exactly what it sounds like: the distance light travels in one year. If you need to get somewhere quick, you'd want to jump on this train because light travels through ...

Scientists have traced a 3,000-light-year-long cosmic jet streaming out from the first black hole ever imaged to its likely source point with the help of "significantly enhanced coverage" from the ...