Live coverage: Mission control loses contact with Indian moon lander

Pioneering spacecraft from NASA and the Japanese space agency promise to reveal two unexplored asteroids later this year, officials said Wednesday, beginning surveys that will culminate in daring descents to capture samples for return to Earth, where eager scientists await a hands-on look at the specimens.

If China’s lunar exploration program goes according to plan, scientists could send a robotic lander to pick up samples from the far side of the moon and return them to Earth by the early 2020s, a top Chinese space official said.

A United Launch Alliance Delta 4 rocket blasted off from Vandenberg Air Force Base in California at 3:40 a.m. local (6:40 a.m. EST; 1140 GMT) today to place a secret payload into space for the National Reconnaissance Office. Follow the mission in our live journal.