Researchers deal a blow to theory that Venus once had liquid water on its surface

A team of astronomers has found that Venus has never been wet, despite decades of speculation that our closest planetary neighbour was once much more like Earth than it is today.

Dwarf planet Ceres might have been a muddy ocean world

Ceres’ crust is probably made from 90% ice today. Using data from NASA’s Dawn mission, scientists found it was likely once a muddy ocean world.

There may be more water on the Moon's surface than we previously thought

This means that astronauts may not be tied to visiting the lunar south pole on future missions to acquire water. Instead, they may be able to find water everywhere on the Moon.

Ephemeral morning frost discovered atop Mars' tallest volcanoes

Morning images show frost briefly coating at least four colossal volcanoes: Olympus Mons, Arsia Mons, Ascraeus Mons, and Ceraunius Tholus.

Evidence of Earth's First Rains Found Trapped Within Primordial Crystals

New research finds Earth's surface was first sprinkled with fresh water some 4 billion years ago, a whole 500 million years earlier than previously thought.

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.