Caught in the middle

Stuck at an altitude of approximately 400 kilometres (250 miles), being on the International Space Station presents visual opportunities that are impossible while on Earth. This is why having the European Space Agency’s (ESA) Alexander Gerst up there with his camera is extremely gratifying. Observing black space with the Moon shining above the blue atmosphere with clutters of clouds is a view that can only been seen while working on board a revolutionary space station.