Engineers at NASA's Jet Propulsion Laboratory lift the Mars 2020 rover's bit carousel out of its storage container. The bit carousel is a mechanism that is at the heart of the rover's Sample Caching System. The image was taken on Aug. 5, 2019, in the Spacecraft Assembly Facility's High Bay 1 at JPL.

JPL is building and will manage operations of the Mars 2020 rover for the NASA Science Mission Directorate at the agency's headquarters in Washington.

For more information about the mission, go to https://mars.nasa.gov/mars2020/.