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Radar-Detected Change in Martian Near-Polar Ionosphere After Comet Flyby
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Radar-Detected Change in Martian Near-Polar Ionosphere After Comet Flyby

NASA / JPL · 2014-11-07 · photograph (digital archive)

From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.

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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.

NASA Image and Video Library’s own description
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MarsMars Express MEX
Credit lineRadar-Detected Change in Martian Near-Polar Ionosphere After Comet Flyby. NASA/JPL, 2014-11-07. Public domain. ID: PIA18859.
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