'Helicopter' flight on Mars could be 'Wright Brothers moment'
'Helicopter' flight on Mars could be 'Wright Brothers moment'

Previewing NASA's upcoming Perseverance rover landing on Mars, Mimi Aung, the Mars 'Ingenuity' helicopter lead engineer at NASA's Jet Propulsion Laboratory, told reporters on Tuesday that if the helicopter flies at what is 1% of the Earth's atmospheric pressure, it will be a "Wright Brothers moment."