The dream of traversing the depths of space and planting the seed of human civilization on another planet has existed for generations.

Scientists are trying to figure out how minerals connected to exoplanetary water would look to the James Webb Space Telescope ...

Artist's impression of Planet Nine as an ice giant eclipsing the central Milky Way, with a star-like Sun in the distance.

“The solar composition is used to calibrate other stars and understand the composition and formation of solar system objects ...

The Arecibo Message as it appears when its 1,679 bits are properly aligned on a grid (left), an annotated illustration ...

A Southwest Research Institute-led team combined compositional data of primitive bodies like Kuiper Belt objects, asteroids ...

The chances of intelligent life emerging in our Universe – and in any hypothetical ones beyond it – can be estimated by a new ...

The Arecibo message contained an image of a man only. But what might seem a sexist choice deserves a more subtle ...

For nearly 40 years, scientists have generally agreed that Earth's Moon formed from debris after a massive collision with our ...

Nearly 47 years ago, two NASA spacecrafts were bound for one of the grandest journeys across our solar system to fly by and ...