Tag: USGS
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Scientists suggest streaks on Martian hillsides are dry flows
This inner slope of a Martian crater has several of the seasonal dark streaks called “recurrent slope lineae,” or RSL, that a November 2017 report interprets as granular flows, rather than darkening due to flowing water. The image is from the HiRISE camera on NASA’s Mars Reconnaissance Orbiter. Credits: NASA/JPL-Caltech/UA/USGS Intermittent flows that appear on…
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Multiple satellites planned in long-term Landsat program
Artist’s concept of Landsat 9, an upgraded rebuild of the Landsat 8 satellite launched in February 2013. Credit: NASA The launch of the next Landsat Earth-viewing satellite in 2023 will be preceded by a smaller spacecraft to map the planet with an infrared camera under a new land imaging roadmap outlined by NASA and the…