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NASA Prepares to Launch Twin Satellites to Study Signal Disruption From Space

NASA’s AIM Observes Early Noctilucent Ice Clouds Over Antarctica

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These plots portray data from radar sounding of Mars mid-latitude ionosphere at three times on Oct. 19 and 20, 2014. The data are from the MARSIS instrument on the European Space Agency Mars Express orbiter.

These spectrograms from the MARSIS instrument on the European Space Agency Mars Express orbiter show the intensity of radar echo in Mars far-northern ionosphere at three times on Oct. 19 and 20, 2014.

This map shows the thickness of the south polar layered deposits of Mars, an ice-rich geologic unit that was probed by the Mars Advanced Radar for Subsurface and Ionospheric Sounding MARSIS

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