Emily Lakdawalla • July 5, 2012
It's such a wonderful thing that astronauts like Don Pettit can tweet photos like these from space.
NASA / Don Pettit
International Space Station,
Senior Editor and Planetary Evangelist for The Planetary SocietyRead more articles by Emily Lakdawalla
Become a member of The Planetary Society and together we will create the future of space exploration.
Support enables our dedicated journalists to research deeply and bring you original space exploration articles.