Another SpaceX rocket is scheduled to take off from Vandenberg Space Force Base this week on Thursday, Dec. 4.

Without reusable rockets, China has turned to a wide variety of expendable boosters this year to launch less than half as often as the United States. China has made 78 orbital launch attempts so far this year, but no single rocket type has flown more than 13 times. In contrast, SpaceX’s Falcon 9 is responsible for 153 of 182 launches by US rockets.