SpaceX fires up Falcon Heavy rocket ahead of Saturday launch (photo)

SpaceX's Falcon Heavy rocket conducts a static fire test at NASA's Kennedy Space Center in Florida to prep for a planned Jan. 14, 2023 liftoff. SpaceX posted this photo on Twitter on Jan. 10.
SpaceX's Falcon Heavy rocket conducts a static fire test at NASA's Kennedy Space Center in Florida to prep for a planned Jan. 14, 2023 liftoff. SpaceX posted this photo on Twitter on Jan. 10. (Image credit: SpaceX via Twitter)

SpaceX's powerful Falcon Heavy rocket has flexed its muscles ahead of a planned liftoff this weekend.

SpaceX just performed a "static fire" test with the Falcon Heavy at Pad 39A at NASA's Kennedy Space Center in Florida, lighting up the rocket's 27 first-stage Merlin engines while the vehicle remained anchored to the ground.

Static fires are common prelaunch tests for SpaceX, and the Falcon Heavy is indeed gearing up for a liftoff in the near future.

"Full duration static fire of Falcon Heavy complete; targeting no earlier than Saturday, January 14 for launch of the USSF-67 mission from Florida," SpaceX said via Twitter on Tuesday (Jan. 10), in a post that also featured a photo of the static fire.

Related: Why SpaceX hadn't flown a Falcon Heavy rocket since 2019

SpaceX's fifth Falcon Heavy rocket is seen here in a hangar at NASA's Kennedy Space Center ahead of a planned Jan. 14, 2023 launch. SpaceX posted this photo on Jan. 7. (Image credit: SpaceX via Twitter)

As that mission name suggests, Falcon Heavy will fly USSF-67 for the U.S. Space Force. The nation's newest military branch was also the customer for the most recent Falcon Heavy flight, called USSF- 44, which launched on Nov. 1, 2022.

USSF-44 sent a handful of classified payloads to geostationary orbit (GEO), about 22,200 miles (35,700 kilometers) above Earth. USSF-67 will also target GEO, launching a military communications satellite and a spacecraft capable of carrying six small satellites to that relatively distant destination, according to SpaceNews

USSF-44 was the first Falcon Heavy mission since June 2019. That long gap was due primarily to delays in the readiness of customer payloads, according to space industry analysts.

The Falcon Heavy consists of three strapped-together first stages of SpaceX's workhorse Falcon 9 rocket. The central booster is topped with an upper stage, which carries the payloads.

Falcon 9 and Falcon Heavy first stages are designed to be reusable. The two side boosters on USSF-67 will be reused from USSF-44, according to SpaceNews, and will attempt to land again for future reuse. USSF-67's central core is new and will not attempt a landing on Saturday, SpaceNews reported.

Saturday's planned liftoff will continue a busy stretch for SpaceX. Elon Musk's company launched 40 internet satellites for the London-based company OneWeb on Monday night (Jan. 9) and plans to loft 51 of its own Starlink broadband craft on Tuesday night.

In addition, SpaceX's robotic Dragon cargo capsule left the International Space Station on Monday to head back down to Earth. Dragon is expected to splash down off the Florida coast on Wednesday (Jan. 11), bringing an end to SpaceX's CRS-26 resupply mission for NASA. 

Mike Wall is the author of "Out There" (Grand Central Publishing, 2018; illustrated by Karl Tate), a book about the search for alien life. Follow him on Twitter @michaeldwall. Follow us on Twitter @Spacedotcom or Facebook.

Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at:

Mike Wall
Senior Space Writer

Michael Wall is a Senior Space Writer with and joined the team in 2010. He primarily covers exoplanets, spaceflight and military space, but has been known to dabble in the space art beat. His book about the search for alien life, "Out There," was published on Nov. 13, 2018. Before becoming a science writer, Michael worked as a herpetologist and wildlife biologist. He has a Ph.D. in evolutionary biology from the University of Sydney, Australia, a bachelor's degree from the University of Arizona, and a graduate certificate in science writing from the University of California, Santa Cruz. To find out what his latest project is, you can follow Michael on Twitter.