Correction to episode 1
August 6, 2007 by greenmue
In the essay “Dying Planet,” I said that nineteenth-century astronomers came to see Mars as the planet that most closely resembled Earth in size. I misspoke. Of the planets in our solar system, Venus is closest in size to Earth, and nineteenth-century astronomers knew that. I should have said that nineteenth-century astronomers saw Mars as the planet that was easiest to study for analogies to what would happen to Earth.
