Watch live: SpaceX test fires Falcon Heavy for U.S. military spaceplane mission

SpaceX is planning to test fire a Falcon Heavy at launch pad 39A at the Kennedy Space Center on Sunday. Ignition and a short burn of the 27 Merlin first stage engines is expected around midday (approx. 1700 UTC). The static fire test comes a week ahead of the planned launch of the U.S. military's secretive X-37B spaceplane. We'll have live coverage and commentary from Spaceflight Now's Will Robinson-Smith starting around 35 minutes prior to the test fire. Videos like this are made possible by the support of our members. Join this channel to get access to perks: