BEIJING — Development of two major derivatives of the DFH-4 satellite bus of Chinese spacecraft builder CAST is running ahead of work on the state manufacturer’s larger DFH-5 product, says a sibling marketing company.

BERLIN — Researchers at more than half a dozen European space institutes are working to build better tools to forecast the space weather patterns produced by the Earth’s Sun. Space weather events such as solar flares and coronal mass ejections (CMEs) create streams of energetic particles that can adversely affect astronaut health, satellite operations and terrestrial power grids.

LOS ANGELES — Virgin Galactic says a series of final confirmation hot-fire tests of SpaceShipTwo’s RM2 hybrid rocket are under way at Mojave, Calif., in preparation for the start of powered test flights of its suborbital passenger vehicle.

Vertical takeoff and landing test vehicle reached almost 263 ft.

Says contractors who employ foreign workers must comply with laws

Robust U.S. public support for the human exploration of Mars reflected in Explore Mars’s recent Mars Generation poll has probably not been changed by the subsequent spectacular explosion of a small asteroid over Russia, according to the national survey’s principal advocate.

Rep. Frank Wolf (R-Va.) has new whistleblower information of possible technology leaks from NASA to China, this time at Langley Research Center, and is seeking a federal criminal investigation of the charges.

Robot arm removal of grapple bars completed de-stowing