Is Pluto a planet? At a U.S. Senate committee hearing this week, NASA's chief shared his thoughts on the decades-long debate.

New research suggests that billions of years ago, the dwarf planet Ceres may have had water, organic molecules, and chemical energy — the key ingredients for life. NASA’s Dawn mission data reveals ...

About 20 years ago, leading astronomers decided that Pluto was too small to be a planet, undoubtedly giving it a Napoleonic ...

Asteroid Juno’s dust shows unusual heat behavior that could reshape what scientists know about heat flow in deep space ...

NASA chief Jared Isaacman said at a US Senate hearing that he supports restoring Pluto's status as a planet after a ...

By probing the atmosphere of a mini-Neptune exoplanet, the James Webb Space Telescope has found that it formed much farther ...

Astronomers have detected the chemical fingerprint of a frozen, water-rich planetary fragment being devoured by a white dwarf star, offering the clearest evidence yet that icy, life-delivering objects ...

A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere that may have been created by ...

Perseverance just landed on Mars, where it will search for signs of life. But space's cool factor doesn't begin or end there!

Venus, Jupiter and Mercury headline May's skywatching, with stunning moon pairings and a three-planet display.

Exoplanet science and the search for life beyond Earth continue to advance at break-neck speeds, with the number of confirmed exoplanets by NASA rapidly approaching 6,300, with 223 of those exoplanets ...