Planets

A 6-mile-think shell of methane ice on Saturn's moon Titan could assist in the hunt for life signs arising from this moon's vast subsurface ocean.

NASA's Perseverance rover found strange green spots in Martian rock, potentially indicating a past interaction with liquid water.

On Sept. 30, NASA's Perseverance rover turned its eyes toward the sky and photographed a solar eclipse from Mars, capturing the tiny moon Phobos crossing the sun's face.

How old is Earth? Our planet's age is known from a variety of sources, from rocks on our own planet to ones from the moon.

A new NASA-led study suggests that photosynthetic microbes could thrive in hidden bubbles of meltwater below patches of ice on Mars. This could be one of the easiest places to search for extraterrestrial life "anywhere in the universe," the team says.

How many moons does Jupiter have? Scientists have discovered dozens of them, but the answer may be more complicated than it seems.

"Some of these features are surprisingly dark compared with their icy surroundings, earning their nickname of 'cryptic terrain.'"

A new analysis of a peculiar metallic cloud surrounding the exoplanet WASP-49 b provides further evidence that it may have been birthed by a volcanic satellite, which may become the first officially recognized "exomoon."

The Hubble Space Telescope has seen Jupiter's Great Red Spot oscillating in width as it drifts around the planet. Could this be related to its overall shrinking?