Live video of launch pad 39A (members only)

NASA expects to spend some $5 billion underwriting development of commercial spacecraft built by Boeing and SpaceX to carry astronauts to and from the space station, ending reliance on the Russians for crew flights and lowering the average cost per seat to around $58 million.

A SpaceX Falcon 9 rocket fired through a dense shroud of coastal fog and climbed into orbit Wednesday from Vandenberg Air Force Base in California, deploying a trio of radar observation satellites to begin a $900 million mission surveying the Arctic, maritime waters, forests and farmland for the Canadian government.

Northrop Grumman’s Antares rocket will deliver a Cygnus supply ship into orbit Saturday to begin a pursuit of the International Space Station.