The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many ...

Astronomers have picked up evidence of an Earth-sized world, distinct from the previously hypothesised Planet Nine and Planet ...

Astronomers propose a new hypothetical planet, Planet Y, beyond Neptune, based on observed orbital anomalies in the Kuiper ...

In the spring of 2022 the U.S. space community selected its top priority for the nation’s next decade of science and ...

The latest research on asteroid Bennu has revealed its heterogeneous origin and a parent world with flowing water, adding to ...

On Aug. 20, 1977, NASA launched the Voyager 2 spacecraft on a mission to explore the outer planets. Despite its name, this ...

NASA’s James Webb Space Telescope finds TRAPPIST-1 d lacks an Earth-like atmosphere, narrowing the search for habitable planets.

In a new study, researchers at Penn State and NASA’s Jet Propulsion Laboratory analyzed when and where human deep space ...