Which worlds of our solar system have oceans of their own? Earth isn’t the only ocean world in our solar system. Water on other worlds exists in diverse forms on moons, dwarf planets, and even comets.

Instead, it resides in a mysterious form akin to water inside a sponge, challenging our conventional understanding of water’s physical states. The discovery of this massive underground ocean was ...

When a massive, black patch, known as a polynya, was spotted by NASA scientists for the first time, satellite operators were ...

K2-18b, an exoplanet 120 light-years away, may be the best hope to confirm that life exists beyond Earth. Here's what to know.

Saturn's icy moon Enceladus sprays water vapor and icy particles from its subsurface ocean out into space. These particles form one of the rings around Saturn — its faint, wispy E ring.