Q&A with Anton Zeilinger, acclaimed quantum physicist

China’s Tianzhou 1 freighter, a pathfinder for regular resupply and refueling trips to the country’s planned space station, wrapped up a series of successful propellant transfer tests with the orbiting Tiangong 2 space lab Saturday and detached from the module for more standalone experiments and a destructive re-entry into Earth’s atmosphere.

China plans to launch a new human-rated space laboratory as soon as July and send two astronauts to visit the mini-space station by end of the year.

China launched the fourth in a series of high-resolution Earth-imaging satellites Saturday, expanding an orbiting fleet of reconnaissance craft that likely serve the Chinese military.