NASA extends US astronauts' ISS stay, cancels Boeing Starliner return due to safety concerns.

NASA has decided to keep US astronauts Butch Wilmore and Suni Williams on the International Space Station (ISS) until February, cancelling their return on the troubled Boeing Starliner capsule due to safety concerns. This decision comes after issues with the capsule's software, docking capabilities, and propellant system. The astronauts will return to Earth in a SpaceX spacecraft instead.