Digging this drawing by astronomy blogger Invader Xan, showing spaceships of the past, present, and (possible?) future lined up side-by-side for size comparison. I, for one, just learn that the Space Shuttle Orbiter was larger than I thought in comparison to the International Space Station.
Also cool: Skylon—a rather terrifying name for a spaceplane that's currently in the early stages of development by a private company. Interestingly (or, perhaps, even more terrifyingly—seriously, this thing is going to need a new name, like woah), Skylon would not have a human pilot but would be capable of hauling humans into space, carrying up to 24 in a special box loaded into the payload bay.
Check out Invader Xan's blog, Supernova Condensate, for more information, including a version of this graphic that includes the Starship Enterprise.
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.