SpaceX launches 50th rocket of the year. The California company launched two separate Starlink missions within six hours of each other on Monday. The second of these, the Starlink 12-10 mission from NASA’s Kennedy Space Center, was the company's 50th of the year, Spaceflight Now reports.

That's quite a cadence you've got there ... Since there are so many, it is kind of boring keeping count of Falcon 9 missions these days, but with 50 launches in the first third of the year, the company is on pace for 150 Falcon family launches this year. For what it's worth, the company also recently launched its 250th Starlink mission overall, a pretty remarkable feat in less than six years.

Isaacman commits to Artemis II and III as is. The US Senate Commerce Committee on Wednesday advanced the nomination of private astronaut and businessman Jared Isaacman as the next administrator of NASA to the Senate floor, setting up the final step before he is confirmed, Ars reports. The vote was not unanimous, at 19–9, with all of the nay votes coming from senators on the Democratic side of the aisle. However, some key Democrats voted in favor of Isaacman, including the ranking member of the committee, Maria Cantwell, D-Wash.

Approval was contingent on support for Artemis ... Notably, both Cantwell and the committee's chair, Republican Ted Cruz of Texas, cited Isaacman's support for the Artemis Program, and flying the next two missions on the Space Launch System rocket, as critical factors in their support. "A commitment to keeping on with the Moon mission is the key requirement we have to have in this position," Cantwell said. "While it's not clear to me where the Trump administration ultimately will end up on the NASA budget, and I have concerns about some of their proposed cuts today, Mr. Isaacman seems to be committed to the current plan."

NASA swaps an Artemis II rocket engine. A couple of weeks ago, ground teams at NASA's Kennedy Space Center in Florida removed one of the four main engines from the Space Launch System rocket slated to send four astronauts on a voyage around the Moon next year, Ars reports. NASA officials ordered the removal of one of the massive rocket's RS-25 main engines after discovering a hydraulic leak on the engine's main oxidizer valve actuator, which controls the flow of super-cold liquid oxygen propellant into the engine's main combustion chamber.