NASA’s Curiosity rover has returned a close-up image of a small rock on Mars that has caught attention for its coral-like ...

“The presence of liquid water [on Mars] is a broad topic that includes rains, rivers, lakes, as well as oceans,” says Ezat ...

New findings from NASA's Perseverance rover have revealed evidence of wave-formed beaches and rocks altered by subsurface ...

NASA’s Perseverance rover has captured striking images of an ancient river system inside Jezero Crater, offering new clues ...

On Jan. 25, 2004, NASA’s Opportunity rover landed on Mars and sent its first pictures of the planet to Earth; originally planned as a 90-day mission, the rover remained operational for over 15 years, ...

Mars is a very dry planet with very little water in its atmosphere and hardly any clouds, so you might not expect it to have ...

Nearly 14 years ago, NASA’s Curiosity rover landed on Mars for a mission to explore the red planet and discover if it had an ...

Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests. New evidence of ...

All told, the Trump administration's proposal was to slash NASA's budget all the way down to $18.8 billion, a 24% drop and ...

While the Perseverance rover continues to capture amazing images of the Martian surface, we also look back at Voyager 2's passage by Neptune. Plus, an amazing lightning storm seen from the ISS, a ...

geological signatures indicate that around 3.4 billion years ago, a connected oceanic system existed on a planetary scale, rather than just isolated lakes.

How can scientists estimate the pH level of Enceladus' subsurface ocean without landing on its surface? This is what a study ...