The text comes from a 1965 printing of a book called 1001 Questions About Astronomy.

The pictures come from the recent New Horizons fly-by of Pluto.

More at Sixty Symbols, including some good old-fashioned pot stirring!

A mix of views on Pluto and its non-planet status. Astronomers Mike Merrifield and Meghan Gray, and office mate Tony Padilla who is a particle physicist and bit of a stirrer!