Stranded astronauts Barry 'Butch' Wilmore and Sunita 'Suni' Williams are nearing their return date, and have now revealed the hardest factor of their nine-month stay aboard the International Space Station (ISS).

The two Nasa astronauts who have been 'stuck' on the International Space Station since last year are now a few weeks away from returning to Earth and to their friends, families and loved ones. Butch Wilmore and Suni Williams were unable to return home on their spacecraft due to a number of issues.

On a crisp January evening, as the International Space Station (ISS) streaked across the sky at 17,500 miles per hour, Charline Giroud, an amateur astrophotographer and biochemist at the University of Oxford, pointed her telescope toward the heavens. Her goal was ambitious: to capture an image of an astronaut during a spacewalk.