Video: Fourth X-37B launch highlights

NASA wants to fly an astronaut on Russia’s next Soyuz mission to the International Space Station in April, a measure the agency says would ensure a continued U.S. presence on the research outpost in case of delays in the launch of SpaceX’s next Crew Dragon flight.

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.

SpaceX launched the first full-scale Starship and Super Heavy rocket from South Texas at 8:33 a.m. CDT (9:33 a.m. EDT; 1333 UTC Thursday). The nearly 40-story-tall rocket, the largest ever built, lifted off from the Starbase launch complex and flew downrange before veering out of control and exploding about four minutes into the flight.