An engineer works on attaching NASA’s Mars Helicopter to the belly of the Mars 2020 rover (which has been flipped over for that purpose) on August 28, 2019, at the Jet Propulsion Laboratory in Pasadena, California.

The twin-rotor, solar-powered helicopter was mechanically connected, along with the Mars Helicopter Delivery System, to a plate on the rover’s belly that includes a cover to shield the helicopter from debris during entry, descent and landing.