Mars Could Have Been wet for Much Longer Than Previously Believed - Universe Today universetoday storybyahman
This conceptual image reveals what the Kasei Valles region on Mars may have looked like three billion years ago. Credits: F. Schmidt/NASA/USGS/ESA/ DLR/FU Berlin
In their study, the SEEC collaboration extended the potentially habitable period on Mars by about 500 million years into the late Hesperian Period . As co-author Frédéric Schmidt, a researcher with the University Paris-Saclay, explained in a NASA“Our simulation revealed that three billion years ago, the climate in much of the northern hemisphere of Mars was very similar to present-day Earth, with a stable ocean.
This simulation revealed that 3 billion years ago, an ocean would have formed in the Northern Lowlands, where the atmosphere was denser and warmer. In this region, water would evaporate and result in precipitation as rain or snow . It would mainly rain in or near the ocean, but in the colder Southern Highlands, it was mainly snow. The snow would accumulate to form large glaciers that would flow to the lowland basin, where they would melt and return water to the ocean.
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