Tag Archives: MGS

North residual polar cap holds both old dense ice and fresh snow

[Editor’s note: From a paper by Jonathan Bapst and three co-authors recently published in the Journal of Geophysical Research.] Thermophysical Properties of the North Polar Residual Cap using MGS TES • We identify residual water ice with elevated surface porosity … Continue reading

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Phobos & Deimos likely formed from big impact on Mars

[Editor’s note: From a paper by Timothy Glotch and seven co-authors recently published in the Journal of Geophysical Research.] MGS‐TES Spectra Suggest a Basaltic Component in the Regolith of Phobos • Mars Global Surveyor Thermal Emission Spectrometer spectra of Phobos … Continue reading

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Best view yet inside Mars from new gravity map

A new map of Mars’ gravity made with three NASA spacecraft is the most detailed to date, providing a revealing glimpse into the hidden interior of the Red Planet. “Gravity maps allow us to see inside a planet, just as … Continue reading

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Ancient Mars biosphere: deep underground?

Something like half of Earth’s entire biomass lies underground in the form of microorganisms living off geothermal heat and chemicals in the crustal rocks. Could the same hold true for Mars, now or in bygone times? If so, it’s hard … Continue reading

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