Minus seven years. Facebook Aquila was launched in 2016. https://en.wikipedia.org/wiki/Facebook_Aquila https://en.wikipedia.org/wiki/Facebook_Aquila Oops, beat

Minus seven years. Facebook Aquila was launched in 2016. https://en.wikipedia.org/wiki/Facebook_Aquila https://en.wikipedia.org/wiki/Facebook_Aquila Oops, beaten by Solar Impulse, as other commenter points out. Let's up the stakes? How long until a solar aircraft runs on another planet? NASA is talking up Mars Aerial and Ground Global Intelligent Explorer (MAGGIE). Very low atmospheric density, and 59% the solar energy. https://www.nasa.gov/general/mars-aerial-and-ground-global-intelligent-explorer/ https://www.nasa.gov/general/mars-aerial-and-ground-global-i...