NASA films rare footage of its Mars helicopter flying and landing
Flying on Mars presents a major challenge.
The Martian surface air density is only about one percent of Earth's, making it difficult for craft to produce the lift necessary to fly. Yet NASA's experimental Ingenuity helicopter was designed to create lift with its rotors under such unique conditions. Using a four-foot wingspan, the robot has now flown over 50 times — though the space agency only expected it to last for five flights.
NASA's car-sized Perseverance rover recently captured... Читать дальше...