how many books can you read per light years?

What was once considered pure fantasy... is now looking a little more plausible. Earlier this week, NASA announced the discovery of a possible Earth-like planet...
-- Potentially habitable Earth-like planet discovered 31 light years away --

"I had two childhood dreams that I thought would never, ever, come true," I told my pondering husband: "One was to be an astronaut, and the other was to have a library at home." I had to forgo the idea of moon landing the day I found out I didn't have perfect eyesight, which was sometime during my teenage years.

"With inflation rate and stuff, how come books now are significantly cheaper than they used to be when I was a kid?" I asked quizzically, gesturing to the unholy amount of books I just purchased. "Tomorrow I'm applying for astronaut!"