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… https://spaceflightnow.com/2020/06/22/atlas-5-rocket-runs-through-practice-countdown-before-mars-rover-launch/

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