Live coverage: Cygnus supply ship departs space station

NASA and Roscosmos, the Russian space agency, have agreed to extend astronaut Peggy Whitson’s stay aboard the International Space Station by three months to enable uninterrupted research aboard the orbital laboratory during a period when Russia is temporarily reducing its crew complement, the U.S. space agency said Wednesday.

With a fix in place for a propulsion system alarm that cut short a countdown in the final seconds Monday, U.S. time, Rocket Lab readied an Electron rocket for another try Wednesday night, but unfavorable upper level winds kept the booster grounded. The Electron rocket is awaiting launch on a test flight aiming to deliver three small commercial CubeSats to orbit from a remote New Zealand launch pad.

Orbital ATK started work on two more surveillance satellites for the U.S. Air Force’s geosynchronous neighborhood watch program late last year as the military aims to expand its ability to track and investigate other objects in the heavily-trafficked belt more than 22,000 miles over the equator.