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25 maj 2022 · Study led by UChicago scientist deepens mystery about climate of early Mars. Mars once ran red with rivers. The telltale tracks of past rivers, streams and lakes are visible today all over the planet. But about three billion years ago, they all dried up—and no one knows why.
1 lip 2019 · Planetary scientists don't yet know why Mars dried out, but data suggest a substantial climate change occurred some 600 million years after the planet's formation.
19 paź 2023 · Mars lost all its water because solar winds, compounded by the absence of a substantial planetary magnetic field, first stripped Mars of its atmosphere, causing all the water to evaporate and vanish.
26 sty 2022 · Mars once rippled with rivers and ponds billions of years ago, providing a potential habitat for microbial life. 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.
16 mar 2021 · Mars had a more substantial atmosphere in the past, and its pressure allowed liquid water to exist on the surface. But work using NASA’s MAVEN orbiter found that much the planet’s atmosphere ...
20 lut 2024 · As the Martian atmosphere burned off, the atmospheric pressure lessened, and liquid water on the surface “will start to evaporate up — it can’t stay in unstable liquid form.” The surface began...
6 wrz 2024 · Why did it lose its magnetic field, allowing the solar wind to claw away its once-abundant atmosphere? And then there’s the riddle of the lost Martian water. As dry riverbeds, deltas, and ocean...
