Planetary Environments & Atmospheres - United States News Beep

The European Space Agency’s Mars Express orbiter captured this view of Mars’ south polar ice cap Feb. 25, 2015. Three years later, the spacecraft detected a signal from the area to the right of the ice cap that scientists interpreted as an underground lake.

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NASA Orbiter Shines New Light on Long-Running Martian Mystery

November 26, 2025

Results from an enhanced radar technique have demonstrated improvement to sub-surface observations of Mars. NASA’s Mars Reconnaissance Orbiter…