More than 3 billion years ago, Mars intermittently had liquid water on its surface. After the planet lost much of its ...

Mars is permanently covered by water ice at its north pole. The ice sheet here is approximately 1,000 kilometers in diameter and up to 3 kilometers thick, and its load depresses the rocky crust ...

According to the study, it takes millions of years for deposits like this to form on Earth, so the evidence suggests that Mars once had a large body of water with waves that moved sediment around.

Scientists found that some slopes on the Moon stay cold enough to hold ice. This could expand water sources for future space ...

Water once existed in abundance of at the surface of Mars. How much of that water has been stored in the planet's crust is still unclear, according to a new analysis.

The north pole of Mars is covered by a 1000-kilometre-wide, three-kilometre-thick ice sheet composed mainly of pure water ice. "Estimating the deformations induced by the ice sheet at Mars's north ...

For the fourth year in a row, iridescent clouds of frozen CO2 are lighting the Martian sky. The clouds appear in the same place, at the same time of year.

The ripples suggest that the lake was free of ice at one point.

Volcanic activity could also have triggered ice-melting events ... gradually turning Mars red. Signatures of the water-rich environment in which the rust formed are still preserved in the dust ...

remains on the surface of the regolith as stable adsorbed water. The study also showed that the soil on Mars could keep ice near the surface in the middle and lower areas because water vapor moves ...

The fate of Mars’ water—whether it was buried as ice, confined in deep aquifers, incorporated into minerals or dissipated into space—remains an area of ongoing research, one of particular ...