Video: Falcon 9 rocket test-fired at pad 39A (members only)

Fueled segments of the solid rocket boosters that will lift off on the first flight of NASA’s Space Launch System have arrived at the Kennedy Space Center in Florida, but officials will hold off on stacking the boosters until the SLS core stage completes a crucial test-firing later this year.

A Soyuz rocket is standing on a launch pad at the Vostochny Cosmodrome in Russia’s Far East for liftoff Sunday with the next 36 satellites for OneWeb’s internet network, the sixth Soyuz mission dedicated to the commercial broadband constellation.

Launch pads and critical facilities at the Kennedy Space Center and the Cape Canaveral Air Force Station are braced for the onslaught of Hurricane Matthew overnight Thursday, one of the most powerful storms to threaten Florida’s Space Coast since the dawn of the space age 50 years ago.