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.

Deploying its marquee element in space Tuesday, NASA’s new Soil Moisture Active Passive spacecraft took a major step towards realizing its science potential.

Launching for the 50th time, an Atlas 5 rocket flew a milestone mission Wednesday in deploying a Global Positioning System satellite for the worldwide utility.