312K views · 1.7K reactions | NASA's Perseverance Mars Rover has cleared an important milestone in the #CountdownToMars. It passed its Flight Readiness Review, which means it’s a go for final preparations and closeouts. A targeted liftoff aboard a United Launch Alliance Atlas V rocket  is set for 4:50 a.m. PT (7:50 a.m. ET/1150 UTC) on July 30: go.nasa.gov/3jxO3zJ | NASA Jet Propulsion Laboratory | Facebook