Watch the Falcon 9 and Crew Dragon arrive at the launch pad (members only)

SpaceX has postponed Wednesday’s scheduled launch from California’s Central Coast with 64 smallsats, electing to keep the Falcon 9 rocket on the ground until at least Sunday to wait for improved weather conditions.

The second fully commercial astronaut flight to the International Space Station will have just two opportunities to launch Sunday and Monday, or else wait until after an upcoming SpaceX resupply mission next month to deliver a new set of high-priority solar arrays to the complex.

Scientists marked the 10th anniversary of the launch of NASA’s Lunar Reconnaissance Orbiter on Tuesday, celebrating a mission that has greatly outlived its original one-year design life and continues taking high-resolution pictures to help U.S. companies and international space agencies select destinations for moon landers.