Water Ice on Mars and seasonal Water Flows by NASA’s Odyssey and Reconnaissance Orbiters

On April 7, 2021 NASA revealed article describes Water Ice presence on Mars and possible existence of water-flows. NASA uses Reconnaissance Orbiter and Odyssey Orbiter to find the water ice using theirs gamma-ray spectrometer (GRS) detectors, which has proven to be a capable hunter of near-surface hydrogen – a proxy for water ice. Previously NASA announced color image was acquired by the Surface Stereo Imager on NASA's Phoenix Mars Lander on the 25th day of the mission, or Sol 24 (June 19, 2008). The trench, called "Dodo-Goldilocks," is lacking lumps of ice seen previously in the lower left corner. The ice sublimated, a process similar to evaporation, over the course of four days.

Odyssey’s two decades of data have been a boon for researchers working to determine where water ice is locked up on the planet. Understanding the water cycle on Mars – a planet that was once much wetter, like Earth – offers insights into the way it has changed over time: How does water move around the planet today? Does the tilt of the planet affect where ice is stable? Odyssey’s discoveries have helped chip away at those questions.

Credit: nasa.gov, NASA/JPL-Caltech

Source for Odyssey Orbiter’s water ice: https://mars.nasa.gov/news/8911/nasas-odyssey-orbiter-marks-20-historic-years-of-mapping-mars/

Source for Mars’s underground ice by Phoenix Lander: https://www.jpl.nasa.gov/images/ice-on-mars-now-its-gone

Source for Seasonal water flows on Mars: https://mars.nasa.gov/resources/20006/possible-water-flows-on-mars/

#mars #water #ice

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