Webb Finds Evidence of Hydrothermal Processes in Interiors of Eris and Makemake

The icy dwarf planets Eris and Makemake have surfaces bearing methane ice of unknown origin. The two planets may have warm oceans. 

Water molecules identified on asteroids for the first time

Scientists identified water on two main-belt asteroids, 7 Iris and 20 Massalia, using data from the now-defunct SOFIA airborne observatory.

Saturn's moon Mimas may have vast, hidden ocean

Saturn's small, crater-covered moon Mimas may have a vast ocean under its thick icy surface, according to a new paper.

Mars Express finds evidence of large water deposits

ESA's Mars Express has revisited one of Mars's most mysterious features to clarify its composition. Its findings suggest layers of water ice stretching several kilometers below ground—the most water ever found in this part of the planet.

Discovery changes understanding of water history on the Moon

New research shows the early lunar crust which makes up the surface of the Moon was considerably enriched in water more than 4 billion years ago, counter to previously held understanding. 

The Moon's Craters Might Contain Far Less Ice Than We Hoped

According to a new analysis of lunar craters, these pocks and divots that mar and characterize the lunar surface are too young for the long-term retention of ancient reservoirs of water ice.

Electrons from Earth may be forming water on the moon

Hawaian researchers discovered that high energy electrons in Earth's plasma sheet are contributing to weathering processes on the moon's surface and the electrons may have aided the formation of water on the lunar surface.

Saturn's Moon Blasting Water Hundreds of Miles into Space

This plume is larger than any previously observed on the moon and may contain the necessary chemicals for life coming from below its icy surface.

Two moons of Uranus may have active oceans, new study finds

Scientists now believe Miranda and Ariel, the smallest and second-smallest of Uranus’s five major moons, could be expelling vapour plumes - which on other moons in the solar system are thought to come from subsurface oceans.

Traces of ancient ocean discovered on Mars

A recently released set of topography maps provides new evidence for an ancient northern ocean on Mars. The maps offer the strongest case yet that the planet once experienced sea-level rise consistent with an extended warm and wet climate.

Jupiter's Moon Europa Has Signs of Liquid Water

Strange double ridges on the surface of Jupiter's ice moon Europa could be signposts to shallow reservoirs of water. 

China's Chang'e-5 probe proves presence of water on Moon

There is as much as 120 parts per million of water (as hydroxyl and/or H2O) in the lunar regolith, new data from the lander of China’s Chang’e-5 lunar probe has revealed.

Evidence of water vapor at Jupiter's moon Ganymede

For the first time, astronomers have uncovered evidence of water vapor in the atmosphere of Jupiter's moon Ganymede.

Titan's Largest Methane Sea is Over 100 Meters

Kraken Mare, a sea of liquid methane on Saturn's moon Titan, is at least 100-m deep near its center, according to a recent analysis of Cassini's data.

NASA's SOFIA discovers water on sunlit surface of Moon

NASA has confirmed, for the first time, water on the sunlit surface of the Moon. This discovery indicates that water may be distributed across the lunar surface, and not limited to cold, shadowed places.