Live coverage: Delta 2 launches

SpaceX test-fired its next Falcon 9 rocket at NASA’s Kennedy Space Center on Saturday in preparation for the company’s 17th launch of the year, a mission tentatively set for liftoff Wednesday with a secretive payload named Zuma for the U.S. government.

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.

An Indian Polar Satellite Launch Vehicle lifted off at 0000 GMT Wednesday (8 p.m. EDT Tuesday) carrying a radar observation satellite to collect imagery in support of military, intelligence and environmental agencies.