Spacewalking astronaut snapped from UK
Photos of the space station and shuttle Discovery attached, taken from the UK by Martin Lewis of St Albans on Wednesday 3rd March, 2011. A spacewalk was in progress and the astronaut can be seen as the bright white blob on the end of an arm stretching from the shuttle.
To show the set-up, here is a NASA photo of another astronaut positioned at the end of the robotic arm.