A new study reveals the likely origin of a mysterious spider-like pattern first spotted on Jupiter's moon Europa in 1998. The ...

Decades ago, a spacecraft suggested Saturn's largest moon, Titan, had an ocean. New observations suggest that the liquid may look more like slush.

Clocks on Mars tick faster by about 477 microseconds each Earth day, a new study suggests. This difference is significantly more than that for our moon, posing potential challenges for future crewed ...