SpaceX on Saturday fired up the rocket that will ferry the company's next batch of Starlink satellites into space.

The company conducted a static-fire test on Saturday (Jan. 4) of a Falcon 9 rocket at Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida, the company said on Twitter. That rocket is expected to send 60 Starlink internet satellites into space no earlier than Monday (Jan. 6), marking the first launch of the year from Florida's Space Coast.

The Falcon 9 rocket out of its hangar on Friday (Jan. 3) and went vertical on the launch pad in advance of the planned test-firing of its nine first stage engines on Saturday. The two-stage rocket is scheduled for liftoff Monday at 9:19 p.m. EST (0219 GMT Tuesday).

But before it can launch, SpaceX put the vehicle through a routine launch rehearsal. The brief test, known as a static-fire test, is a standard part of prelaunch procedures and one of the last major milestones before liftoff. During the test, teams loaded the Falcon’s super-chilled propellants — kerosene and liquid oxygen — into the rocket before igniting the first stage’s nine Merlin 1D engines.

The engines briefly fired at 12 p.m. EST (1700 GMT), generating more than 1 million pounds of thrust while the booster remained firmly on the ground. Engineers reviewed the data before deciding to proceed with the Falcon 9’s planned launch attempt Monday evening.

"Static fire complete — targeting Monday, January 6 at 9:19 p.m. EST for launch of 60 Starlink satellites from Pad 40 in Florida," SpaceX wrote on Twitter shortly after the test.

The company launched its first group of 60 in May of last year, followed by an additional 60 in November, and plans for its burgeoning constellation to eventually be more than 40,000 satellites strong. Monday’s launch will bring the current number of satellites up to nearly 180, making Musk’s constellation the largest in orbit.