NASA’s helicopter on Mars, the four-pound “Ingenuity,” failed to get off the ground for its fourth flight Thursday, but NASA said it is safe and will try again Friday.
Previous test flights for the helicopter went well, with Ingenuity rising up 16 feet in the air during the third flight last Sunday then flashing downrange about 50 yards at a speed of 6.6 feet per second.
The second test flight on April 22 and the first flight on April 19 also went as planned.
The cause of Thursday’s…
