Live coverage: Soyuz blasts off on third mission for O3b

SpaceX’s first Falcon Heavy launch for the U.S. Air Force took a major step closer to liftoff with a hold-down engine firing Wednesday night at launch pad 39A at NASA’s Kennedy Space Center in Florida. Liftoff with a cluster of experimental satellites and weather monitoring craft is set for June 24.

Arianespace’s launch team loaded an Ariane 5 rocket full of super-cold liquid hydrogen and liquid oxygen propellants Tuesday for a fiery sunset blastoff from French Guiana at 2139 GMT (4:39 p.m. EST) with two European-built television broadcast satellites for Brazil and Indonesia.

An eight-ton Russian Progress supply ship packed with nearly three tons of food, water and fuel for the International Space Station is ready for liftoff Friday on a vital mission to resume cargo deliveries to the outpost after back-to-back logistics flights fell short.