The Solar Impulse 2 became the first aircraft in history to circle the globe using only solar energy, completing a journey of over 40,000 kilometers with zero fuel and zero emissions. Covered in thousands of solar cells, the plane generated power during the day and stored excess energy in batteries to fly through the night. While it carried only one pilot and flew at modest speeds, the mission proved a historic point: long-distance flight without fossil fuels is physically possible. The project

43K views · 1.5K reactions | Solar Impulse has become the first...