Melting Water in Mars' Past Could Have Created Martian Gullies - by et_exists
Mars’ obliquity varies cyclically over the course of hundreds of thousands to millions of years, which affects the planet’s climate and seasons, to include atmospheric pressure and summertime surface temperature.
The formation of impact crater gullies has been debated in the scientific community for several years, with previous studies suggesting they were formed from from the Martian regolith, which free up rocks and rubble that slide down impact crater slopes, producing the thin channels. This most recent study not only challenges those previous hypotheses but attempts to paint an entirely new picture for how these impact crater channels form in the first place.
Image of gullies in Terra Sirenum on Mars taken by the High Resolution Imaging Science Experiment camera onboard NASA’s Mars Reconnaissance Orbiter.
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