Tag Archives: snowmelt

THEMIS: Crater rim gullies in Terra Sirenum

THEMIS Image of the Day, November 6, 2018. Numerous gullies dissect the northern rim of this unnamed crater in Terra Sirenum. The inside of the north rim faces away from the Sun and is more deeply gullied than the Sun-facing … Continue reading

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Mars’ ancient climate had a “wet-pass” filter

Volcanic eruptions — and the rocks they produce — dominate the surface of the Red Planet. Mars also shows evidence for activity by liquid water — sediments, channels, and valley networks — through much of its history. While volcanos can … Continue reading

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