Inside NASA's Mars Rovers

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NASA's rovers, from Sojourner to the 2020 Perseverance rover in 3D.

NASA's first rover on Mars was modest: Sojourner, the size of a microwave oven, demonstrated in 1997 that a robot could rove on the Red Planet. NASA's next Mars rovers, Spirit and Opportunity, were each the size of a golf cart. After landing in 2004, they discovered evidence that the planet once hosted running water before becoming a frozen desert. The car-sized Curiosity rover landed in 2012. Curiosity discovered that its landing site, Gale Crater, hosted lake billions of years ago and an environment that could have supported microbial life. Perseverance aims to take the next step, seeking, as a primary goal, to answer one of the key questions of astrobiology: Are there potential signs of past microbial life, or biosignatures on Mars?

This demanding science goal requires a new suite of cutting-edge instruments to tackle the question from many angles. The Scanning Habitable Environments with Raman & Luminescence for Organics & Chemicals (SHERLOC) instrument, which can detect organic matter, and the Planetary Instrument for X-ray Lithochemistry (PIXL), which measures the composition of rocks and soil, will allow Perseverance to map organic matter, chemical composition and texture together at a higher level of detail than any Mars rover has done before. These instruments — two of the seven total onboard — will play a particularly important role in Perseverance’s search for potential signs of life.

NASA's Mars 2020 Perseverance Rover Landing Animations
https://www.youtube.com/watch?v=rzmd7RouGrM
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