Watch China's Shenzhou 16 space station astronauts return to Earth tonight (video)

A nearby kilonova explosion could threaten all life on Earth. But don't worry, scientists say.

The race back to the moon is heating up, and in August India took the lead, becoming the first nation to land a spacecraft near the prized South Pole. Water ice in this area makes it a prime candidate for human presence — but India will soon have competition from China and several private companies.

China's astronauts grow vegetables in orbit, with an eye on deep space exploration