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We used gravity mapping observations from NASA’s Gravity Recovery and Interior Laboratory (GRAIL) to detect, characterize and validate the presence of large impact craters buried beneath the lunar maria. In this paper we focus on two prominent anomalies detected in the GRAIL data using the gravity gradiometry technique. Our detection strategy is applied to both free-air and Bouguer gravity field observations...
Visible images from the Mars Reconnaissance Orbiter have revealed more than 200 new impact sites on Mars (almost all in dust-mantled regions) containing 1–50m diameter craters, often in clusters. We count approximately 65,000 small-scale slope streaks within 2 to 3km of one such cluster and categorize them into four morphologically distinct types. Here we show that these slope streaks (interpreted...
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