Category Archives: Reports

Lightning on Mars is probably rare and weak

[Editor’s note: From a paper by Gerhard Wurm and four co-authors recently published in Icarus.] A Challenge for Martian Lightning: Limits of Collisional Charging at Low Pressure • Collision experiments on identical grains show a strong dependence of charging on … Continue reading

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HRSC: From canals to craters

Mars was once believed to be criss-crossed by a system of irrigation canals – dark troughs that sliced across the planet’s surface, excavated by an intelligent society of thirsty martians. The astronomer who promoted this idea lends his name to … Continue reading

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HiRISE: A frosted surface

This is the first of a new monitoring series to track seasonal processes. It is also a striking image with late winter angled illumination over dunes covered by carbon dioxide frost mixed with dust. Dark spots may be where sand … Continue reading

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Curiosity update: Touch-and-go!

Sol 2408, May 15, 2019, update by MSL scientist Mark Salvatore: Now that we’re back on the road following our drill campaign at Kilmarie, Curiosity is planning a quick “touch-and-go” activity today to characterize the local bedrock. Yesterday afternoon, Curiosity … Continue reading

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THEMIS: Basaltic dunes on a Meridiani Planum crater floor

THEMIS Image of the Day, May 16, 2019. Today’s false color image shows an unnamed crater north of Meridiani Planum. The dark blue features are small basaltic sand dunes. The THEMIS VIS camera contains 5 filters. The data from different … Continue reading

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Fly over Gale Crater’s Mt. Sharp by video

Ever wanted to visit Mars? A new animated video shows what it would be like to soar over Mount Sharp, which NASA’s Curiosity rover has been climbing since 2014. This video highlights several regions on the mountain that are intriguing … Continue reading

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60,000 orbits for MRO

NASA’s Mars Reconnaissance Orbiter hit a dizzying milestone this morning: It completed 60,000 loops around the Red Planet at 10:39 a.m. PDT (1:39 p.m. EDT). On average, MRO takes 112 minutes to circle Mars, whipping around at about 2 miles … Continue reading

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Curiosity update: Turning our wheels

Sol 2407, May 14, 2019, update by MSL scientist Abigail Fraeman: We’re driving today! …but only about three meters. After weeks of staying put while we completed drilling activities at “Kilmarie,” Curiosity is stretching her wheels. The main activity in … Continue reading

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HiRISE: Resistant lava and erosion

This image demonstrates the curious phenomenon called “topographic inversion.” The southern half of the picture is covered by a well-preserved lava flow. The flow stops just at the brink of descending a steep slope. Lava isn’t afraid of falling, so … Continue reading

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Phobos: Full Moon view

For the first time, NASA’s Mars Odyssey orbiter has caught the Martian moon Phobos during a full moon phase. Each color in this new image represents a temperature range detected by Odyssey’s infrared camera, which has been studying the Martian … Continue reading

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