Some are as big as the Statue of Liberty. But these aren’t asteroids from our own solar system– they may have come from an ...

Watch this video to find out more about the Earth, planets in our Solar System and other planets far off in outer space. From up here ... billions of stars in our galaxy, which is called the ...

In this series, we cover provocative questions in astronomy. This week: the mysterious extragalactic signals known as Fast ...

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study suggests.

This process helps cool the planet. This tangled planetary ... important step in understanding the evolution of galaxy clusters. The outer space world is home to endless mysteries and secrets ...

Staring at the sun—a close (but safe) look at our home star Staring at the sun—a close (but safe) look at our home star Need a new idea to keep kids entertained? Try stargazing. Need a new ...

Scientists found an intriguing world in our galaxy.

In 2011, a project that surveyed the Milky Way galaxy for exoplanets ... at NASA’s Goddard Space Flight Center, said in a statement. "If so, it will be the first planet ever found orbiting ...