The 20 best images taken by ESA astronaut Tim Peake selected by photographer Max Alexander. Tim shared over 400 pictures during his six-month Principia mission on the International Space Station, many from the European-built Cupola observatory.

Photography is a common pastime for astronauts in space when they are not running research for scientists on Earth or maintaining the Station, but the cameras are also used to document experiments and take pictures for mission control.

All image credits: ESA/NASA