Watch a 4K replay of the Atlas 5 launching for the National Reconnaissance Office

A layer of fog intruding on Vandenberg Air Force Base in California kept nearby observers from seeing any sign of Saturday’s predawn launch of an Atlas 5 rocket carrying a robotic NASA probe to Mars. The only images of the Atlas 5’s fiery takeoff came from remote cameras placed at the launch pad, or from distant viewing points away from the poor visibility.

Orbital ATK transferred an Antares rocket and Cygnus supply ship to their launch pad on Virginia’s Eastern Shore late Thursday for a liftoff now targeted for Monday with nearly 7,400 pounds of cargo heading for the International Space Station.

President Trump reestablished U.S. Space Command in a White House ceremony Thursday, setting up a unified combatant command previously dissolved in 2002 that Trump said “will defend America’s vital interests in space” amid growing threats to space assets and services.