Nasa astronauts Butch Wilmore and Suni Williams returned to Earth in a SpaceX capsule on Tuesday with a soft splashdown off Florida's coast, nine months after their faulty Boeing Starliner craft upended what was to be a week-long stay on the International Space Station.
Chinese researchers have developed the country's first carbon-14 nuclear battery, marking a milestone in the research and development of micro-nuclear battery technologies.
Increasing greenhouse gas emissions will reduce the atmosphere’s ability to burn up old space junk, MIT scientists report.