This footage from Aug. 19, 2019, shows a replica of InSight scraping soil with a scoop on the end of its robotic arm in a test lab at NASA's Jet Propulsion Laboratory in Southern California. A replica of the "mole" — the lander's self-hammering heat probe — comes in to view as the scoop moves to the left. On Mars, InSight will use techniques practiced by engineers on Earth in order to scrape and tamp down soil on top of the mole to help it dig. Movie available at https://photojournal.jpl.nasa.gov/catalog/PIA24099