Left: A Long March-2F rocket carrying the unmanned Shenzhou-22 spacecraft takes off from the Jiuquan Satellite Launch Center for a mission to China's Tiangong space station, near Jiuquan, Gansu ...

Portal Space Systems and its CEO, Jeff Thornburg, aim to commercialize a decades-old spaceflight concept called solar thermal ...

China's uncrewed Shenzhou-22 space vessel arrived at the Tiangong space station on Tuesday morning, avoiding the potential stranding of three Chinese astronauts on the orbiting space outpost.

Those astronauts are flying on the Shenzhou 21 mission, which arrived at Tiangong on Halloween night. But the spacecraft they ...

Moss spores survived an extended stay on the outside of the ISS and remained capable of germinating once back on Earth. Their ...