Astronaut Ron Garan takes photos in space and posts them to Google+. This photo was taken yesterday, aboard the ISS, and shows the Southern Lights.
Real-time astronaut photos may be my favorite benefit of social media networks.
Maggie Koerth-Baker is the science editor at BoingBoing.net. She writes a monthly column for The New York Times Magazine and is the author of Before the Lights Go Out, a book about electricity, infrastructure, and the future of energy. You can find Maggie on Twitter and Facebook.