Video: Press conference following Falcon launch and landing

Space station commander Chris Cassidy and Robert Behnken floated back outside Tuesday for their fourth spacewalk in less than a month, completing preparations for future upgrades including the eventual installation of an airlock that will allow commercial experiments to be moved into and out of vacuum as required.

Spaceflight Now’s camera at the Kennedy Space Center’s Complex 39 press site captured this view of the Falcon 9 rocket’s high-altitude anomaly Sunday.

These photos show SpaceX’s Falcon 9 rocket, with a previously-flown first stage booster, sitting on its launch pad Tuesday at Vandenberg Air Force Base in California ahead of the scheduled liftoff of the Radarsat Constellation Mission.