Keith Cooper is a freelance science journalist and editor in the United Kingdom, and has a degree in physics and astrophysics from the University of Manchester. He's the author of 'The Contact Paradox: Challenging Our Assumptions in the Search for Extraterrestrial Intelligence' (Bloomsbury Sigma, 2020) and has written articles on astronomy, space, physics and astrobiology for a multitude of magazines and websites.
MEDA's Radiation and Dust Sensors are able to detect dust clouds raised by dust devils and gusts of wind by the way that the airborne dust scatters the sunlight, while other MEDA sensors measure the air pressure, temperature and wind speed.
Less frequent than the dust devils, but capable of lifting even more dust, are strong daytime wind gusts that blow upslope. The largest dust devils detected by MEDA at Perseverance's landing site in Jezero crater have been about 890 feet across, but one particular daytime wind event covered an area 10 times larger.
The first dust devil spotted by Perseverance on Mars. On average one dust devil passes over the rover per day.
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