4K video of the Falcon Heavy hot fire (members only)

A forecast of low ceilings, thick clouds and rainy weather Thursday has led NASA and Northrop Grumman officials to push back the launch of an Antares rocket and a space station-bound supply ship from Virginia’s Eastern Shore to Friday morning.

SpaceX’s 34th mission as part of the Commercial Resupply Services 2 contract with NASA will deliver 6,500 pounds of science and supplies to the International Space Station. Liftoff of the Falcon 9 rocket from pad 40 at Cape Canaveral Space Force Station is scheduled for Friday, May 15, at 6:05 p.m. EDT (2205 UTC).

SpaceX’s first Falcon Heavy rocket fired up 27 main engines Wednesday on launch pad 39A at NASA’s Kennedy Space Center in Florida, sending a crackling rumble across the swampy spaceport and moving the heavy-lifter a step closer to its oft-delayed maiden flight as soon as next week.