Need a break? Play the USA TODAY Daily Crossword Puzzle. SpaceX's Falcon 9 first-stage booster notched its 21st flight during the June 13 launch, adding to its lengthy mission list: Crew-6, SES O3b mPOWER-B, USSF-124, Bluebird 1-5 and 16 previous Starlink missions. SpaceX's ability to reuse rocket boosters has driven its launch prices down, transforming the industry. Following stage separation, the booster descended and landed on the SpaceX drone ship A Shortfall of Gravitas in the Atlantic Ocean. SpaceX Ax-4, Starship updates this week A different Falcon 9 was initially scheduled to launch Axiom Space's fourth crew of private astronauts earlier this week from KSC to the International Space Station. However, a liquid oxygen leak that was identified during post-static fire booster inspections — coupled with a leak on the Russian side of the ISS — thwarted this week's launch attempts. No new date has been scheduled. "We’ll continue to work closely with @NASA and @Axiom_Space to determine the best launch opportunity for Dragon and the Ax-4 crew to the @Space_Station," a June 12 SpaceX tweet said. Space Coast space fans remain buzzing about the June 12 demolition operation that knocked down United Launch Alliance's towers and infrastructure at Launch Complex 37 at Cape Canaveral Space Force Station. Next, SpaceX officials plan to build new launch pads, landing pads and surrounding infrastructure to start launching Starship-Super Heavy rocket systems from LC-37 as soon as next year, pending regulatory approvals. SpaceX targeting June 18 for Starlink launch Per a National Geospatial-Intelligence Agency navigational advisory, SpaceX will target another Starlink mission during early morning hours Wednesday, June 18. The company has yet to publicly announce this liftoff. More details: Launch window: 1:38 a.m. to 6:08 a.m. Location: Launch Complex 40 at Cape Canaveral Space Force Station. Sonic booms: No.