SpaceX launched a new batch of 29 Starlink satellites to low-Earth orbit on Tuesday.

The Falcon 9 rocket was originally supposed to launch on Monday, but was delayed to Tuesday morning. No reason was given.

The first-stage booster supporting the mission is slated to fly for the 18th time, marking another potential milestone in SpaceX’s reusable rocket program. The booster previously supported high-profile missions including Crew-9, RRT-1, Firefly Blue Ghost Mission 1, Fram2, SXM-10, MTG-S1, EchoStar XXV, SXM-11, and nine Starlink missions.

Following stage separation, the booster landed on the A Shortfall of Gravitas droneship, which will be stationed in the Atlantic Ocean.