This is a prototype from the jet Propulsion Laboratory (JPL) funded by NASA.

In July 2022, technologists from NASA’s Jet Propulsion Laboratory in Southern California and Near Space Corporation in Tillamook, Ore., carried out two successful flights of an aerial robotic balloon, or aerobot, over Nevada’s Black Rock Desert. The prototype is a scaled-down version of an aerobot that could one day take to Venus’s skies, exploring an atmospheric region too low for orbiters.

This is excellent tech, and one day it will fly on other worlds. Watch the video.