Video: Zoomed in view of ignition of Falcon 9 engines in prelaunch test (members only)

Rainy weather expected across Central Florida this weekend has a 50-50 chance of preventing the launch of a SpaceX Falcon 9 rocket Saturday on a resupply mission to the International Space Station, U.S. Air Force forecasters said Wednesday.

A Chinese Long March 4C rocket failed to place its top secret military payload into orbit Wednesday after a launch from the Taiyuan space base southwest of Beijing, according to the state-run Xinhua news agency.

Two satellites destined to join China’s Beidou network successfully launched Thursday aboard a Long March 3B rocket, the first two of up to 18 new Chinese navigation craft scheduled for deployment this year.