Watch a 4K video replay of Falcon Heavy’s static fire test (members only)

SpaceX’s third Falcon Heavy rocket is set for liftoff from NASA’s Kennedy Space Center in Florida, and the heavy-lift launcher will head on an easterly course over the Atlantic Ocean atop more than 5 million pounds of thrust.

SpaceX is still working on a new, safer helium tank design needed for launches with astronauts, and the debut of the company’s upgraded Falcon 9 Block 5 rocket earlier this month did not count as one of seven successful missions in “crew configuration” NASA says it requires before putting astronauts aboard the vehicle, officials said Thursday.

The U.S. Air Force has released an infrared video and additional images from Sunday’s landing of the military’s X-37B spaceplane in Florida after a top secret mission that lasted more than two years.