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InSight's Seismometer on the Martian Surface: This image shows InSight's domed Wind and Thermal Shield, which covers its seismometer. The image was taken on the 110th Martian day, or sol, of the mission. The seismometer is called Seismic Experiment for Interior Structure, or SEIS. Image Credit: NASA/JPL-Caltech. Full image and caption ›. NASA's Mars InSight lander has measured and recorded for the first time ever a likely "marsquake.". The faint seismic signal, detected by the lander's Seismic Experiment for Interior Structure ( SEIS ) instrument, was recorded on April 6, the lander's 128th Martian day, or sol. This is the first recorded trembling that appears to have come from inside the p... Full story

24 April