NASA’s most recent photos of Pluto, captured by the New Horizons spacecraft, have revealed some of the most intriguing and ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

The first observations of Pluto by NASA's James Webb Space Telescope (JWST) reveal dramatic phenomena on its surface, like ...

The search for life beyond Earth is a key driver of modern astronomy and planetary science. The U.S. is building multiple ...

Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have ...

In a distant region of space thought to be empty, a newly discovered dwarf planet inspires a debate about the existence of a giant planet hiding out there.