Video: 4K video replay of SpaceX’s CRS-21 launch (members only)

SpaceX’s reused Falcon 9 first stage booster returned to a landing on an ocean-going platform a few minutes after launching March 30 with the SES 10 communications satellite, then returned to Port Canaveral early Tuesday.

SpaceX brought another Falcon 9 booster into Port Canaveral on Wednesday, a little more than two days after landing the rocket on a platform in the Atlantic Ocean as the company enters an unusually quiescent period of launch activity in Florida — at least by recent standards.

Astronauts Jeff Williams and Kate Rubins ventured outside the lab complex Friday for a long-awaited spacewalk to attach a new docking mechanism, the first of two that will be used by U.S. crew ferry ships being built by Boeing and SpaceX to carry astronauts to and from the outpost, ending NASA’s sole reliance on Russian Soyuz spacecraft.