Sources report that SpaceShipTwo will make a powered flight early Thursday morning from the Mojave Air and Space Port in California. The space plane and its WhiteKnightTwo carrier aircraft have been outside on the ramp all day. Final preparations will begin later tonight.
During its first powered flight on April 29, the vehicles took off after 7 a.m. PDT, with SpaceShipTwo landing just after 8 a.m. PDT after a short flight. The spacecraft fired its engine for 16 seconds. Sources report the burn will be slightly longer this time.
I will be covering the test. Follow my updates here on Parabolic Arc and live @spacecom