3 天之前 · NASA scientists have determined that a primitive ocean on Mars held more water than Earth's Arctic Ocean and that the Red Planet has lost 87 percent of that water to space. NASA/GSFC. About one-fifth of Mars was once underwater, raising the prospects for life.

Mars contains water, though mostly as subsurface permafrost. Surface water is readily visible at some places, such as the ice-filled Korolev Crater, near the north polar ice cap. Almost all water on Mars today exists as polar permafrost ice, though it also exists in small quantities as vapor in the atmosphere. [1]

2025年1月31日 · The existence of water on Mars has long been a subject of curiosity and debate. A recently published study presents compelling evidence of ancient “wave ripples” in rocks that were shaped by Martian water and winds billions of years ago. These ripples, imprinted on the Martian surface, speak to a time when shallow bodies of water were open ...

2024年8月12日 · Scientists have discovered a reservoir of liquid water on Mars - deep in the rocky outer crust of the planet. The findings come from a new analysis of data from Nasa’s Mars Insight Lander, which...

2024年8月12日 · Using seismic activity to probe the interior of Mars, geophysicists have found evidence for a large underground reservoir of liquid water — enough to fill oceans on the planet’s surface.

2015年9月28日 · New findings from NASA’s Mars Reconnaissance Orbiter (MRO) provide the strongest evidence yet that liquid water flows intermittently on present-day Mars. Using an imaging spectrometer on MRO, researchers detected signatures of hydrated minerals on slopes where mysterious streaks are seen on the Red Planet.

2022年1月26日 · As the planet’s atmosphere thinned over time, that water evaporated, leaving the frozen desert world that NASA’s Mars Reconnaissance Orbiter (MRO) studies today. It’s commonly believed that Mars’ water evaporated about 3 billion years ago.

2024年8月12日 · Scientists Monday announced they've found evidence of liquid water on Mars -- which they say is buried deep underground in cracks several miles under the planet's surface.

2025年1月23日 · The researchers estimate that the ripples were formed 3.7 billion years ago when Mars was warm enough to support liquid water open to the air. The ripples are small, about 6 millimeters high and 4 ...

2024年12月26日 · A recent study has provided groundbreaking insights into how variations in the planet’s crustal thickness billions of years ago may have influenced its geological and hydrological systems, reshaping our understanding of water on Mars.