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 ...

At least 50 billion planets in our own Milky Way galaxy are likely to be free-floaters ... chaotic star cluster and our smooth path through space was not always so. “ Collisions among ...

Uncovering the extraterrestrial world in unprecedented detail, the space agency regularly releases images never seen before. The cosmic wonders include celestial bodies, planets, nebula ...

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.