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Perseverance's Radar Imager for Mars' Subsurface Experiment (RIMFAX) uses radar waves to probe the ground, revealing the unexplored world that lies beneath the Martian surface. Highlighted in blue in this visualization from the interactive tool Learn About Perseverance, the instrument's antenna is externally mounted underneath the Multi-Mission Radioisotope Thermoelectric Generator (MMRTG — the rover's nuclear battery) on the back of the Perseverance. The first ground-penetrating radar set on the surface of Mars, RIMFAX can provide a highly detailed view of subsurface structures down to at le…
