Q&A with Anton Zeilinger, acclaimed quantum physicist

Two Earth-imaging microsatellites built and owned by the Argentine company Satellogic launched on a Long March 2D rocket from China Wednesday, sharing a ride into orbit with two Chinese spacecraft.

A communications satellite designed to deliver broadband services to rural China, airline passengers and maritime vessels suffered “abnormalities” after separating from its Long March 3B launcher Monday, Chinese state media confirmed Tuesday.

China’s space agency said Friday the country’s first Mars rover safely touched down and began sending data back to Earth, joining the United States as the only two nations to successfully land and operate a spacecraft on the surface of the Red Planet.