U.S. to test solar plane
NASA is planning to series of test-flights of an experimental, unmanned flying wing designed to run on solar power and cruise for days at a time at an altitude of 30,000 metres, more than three times
NASA is planning to series of test-flights of an experimental, unmanned flying wing designed to run on solar power and cruise for days at a time at an altitude of 30,000 metres, more than three times