B-roll for media. The rocket that will loft InSight beyond Earth will also launch a separate NASA technology experiment: two mini-spacecraft called Mars Cube One, or MarCO. These briefcase-sized CubeSats will fly on their own path to Mars behind InSight. They will be a first test of miniaturized CubeSat technology in deep space, which researchers hope can offer new capabilities to future missions.
For more information about the MarCO, visit: jpl.nasa.gov/news/press_kits/insight/appendix/mars-cube-one/