Live coverage: Space station crew back on Earth

NASA’s senior manager in charge of the development of the James Webb Space Telescope, Eric Smith, recently spoke with Spaceflight Now about the decision to reschedule its launch from October 2018 to the spring of 2019.

An Ariane 5 rocket emerged from its vertical assembly building Monday and rolled along dual rail tracks for a 1.7-mile (2.7-kilometer) journey to its launch pad at the Guiana Space Center on the northern coastline of South America, moving into position for blastoff Wednesday with four Galileo navigation satellites.

A two-stage Northrop Grumman Antares rocket rolled out of its horizontal integration facility Monday for the mile-journey south to launch pad 0A at the Mid-Atlantic Regional Spaceport in Virginia, where liftoff on a space station resupply mission is scheduled for Wednesday.