nasa
Picturing Earth: Astronaut Photography In Focus
NASA astronaut Chris Cassidy uses a 400mm lens on a digital still camera to photograph a target of opportunity on Earth, 250 miles below, on June 3, 2013. The many-windowed Cupola is the best place on the International Space Station for taking pictures. Cassidy has been aboard the orbital outpost since late March and is due to return to Earth in September.
NASA Earth Observatory — Petermann Glacier Calving Event, August 2010
