Atlas 5 rocket runs through practice countdown before Mars rover launch – Spaceflight Now

Vapors stream away from a United Launch Alliance Atlas 5 rocket during a fueling test Monday on pad 41 at Cape Canaveral Air Force Station. Credit: United Launch Alliance

The Atlas 5 rocket that will send NASA’s Perseverance rover toward Mars next month aced a countdown rehearsal Monday at Cape Canaveral, helping ensure the United Launch Alliance-built rocket is ready for liftoff during the rover’s 23-day launch window…More about this article in link below…

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