Photos: Atlas 5 launches new weather observer

A privately-funded airlock from Nanoracks will head for the International Space Station this weekend in the trunk of a SpaceX Cargo Dragon capsule, adding to the orbiting lab’s capacity for scientific experiments in another milestone for commercial space development.

SpaceX chief executive Elon Musk released the first images of his company’s Falcon Heavy rocket Wednesday, showing the massive triple-core booster almost fully assembled inside its hangar at the Kennedy Space Center’s pad 39A, where it is scheduled to lift off some time in January.

Orbital ATK’s Antares rocket will deliver a Cygnus supply ship into orbit Monday to begin a three-day pursuit of the International Space Station.