Falcon 9’s first stage lands on the A Shortfall of Gravitas droneship, completing this booster’s 19th mission pic.twitter.com/jzfppBH99y

35 minutes to launch, the launch auto sequence has started and fueling of Falcon 9 is underway at pad 40

Maiden launch of Falcon Heavy, the most powerful operational rocket on Earth, with the first dual rocket landing pic.twitter.com/CrzQGeQWU8

For National Space Day I just want to thank all the people who are actually taking chances by building things and launching them into space. This is risky, hard, and easy for all of us to criticize. So I salute the doers.