'It's sort of been invincible until this moment:' Mars helicopter Ingenuity pilot says 'bland' terrain may have doomed NASA chopper
Flat, featureless terrain likely caused the accident that has permanently grounded NASA's Mars helicopter Ingenuity, mission team members say.
TroibNews 
Flat, featureless terrain likely caused the accident that has permanently grounded NASA's Mars helicopter Ingenuity, mission team members say.
