Airbus has solar powered stratosphere drone that has flown for nearly 26 days
• https://www.nextbigfuture.comAn unmanned Airbus drone aircraft, a 75 kilogram Zephyr, flew for almost 26 days. It will offer local satellite-like services and runs on solar power. It flies in the stratosphere at an average altitude of 70,000 feet and has a wingspan of 25 meters.