Solar energy can be the power for cars, space stations, and trains, and it can also power planes. Paul MacCready created the first solar-powered aircraft, the Solar Challenger, in 1981 and flew it across the English Channel. In 1998, the remote-controlled solar airplane Pathfinder set an altitude record, reaching 80,000 feet.
NASA later broke this record in 2001, achieving 96,000 feet with their non-rocket aircraft. The largest and most powerful solar-powered airplane today, Solar Impulse 2, completed the world's first zero-emissions flight around the world in 2016, piloted by Bertrand Piccard.