The Nazca Lines Mystery.
Join Professor Michael Chriss from the Steward Observatory for this discussion about the enormous petroglyphs in the Nazca Desert in Peru. Viewed from above, the petroglyphs—which are up to 1,200 feet long—depict creatures like birds, fish, llamas, jaguars, monkeys and humans, as well as plant-like shapes. They were made by simply moving around different color rocks, but scientists have varying explanations as to their original purpose. Trust us: an evening of mystery is just what you need, and the Steward Observatory is here to provide it. 7:30 p.m. Monday, Sept. 17. Steward Observatory, 933 N. Cherry Ave., room N210. Free—and after the lecture, use of the telescope is free as well. Details Here.
It is arguably the best day of the Friends of the Pima County Public Library's book sale if your desire for books requires quantity over quality. It's 10 dollar bag day! This means that you may fill a provided bag with as many books as you can jam in there, and get it all for just ten bucks. There are over 70 categories of books to choose from, as well as vinyl records, CDs, audiobooks and more. All books are used but high quality. The sale runs from 8 a.m. to 2 p.m. at 2230 N. Country Club Road. Details here.
House of Stairs CD Release.
Inspired by the mathematical constructions of artist M.C. Escher, Phoenix progressive jazz collective House of Stairs are celebrating the release of their ablum Autopilot
. The show will also include the lo-fi/chillhop/study beats of Mesquite. The show is free, only for those ages 21 and up, and at Club Congress. 311 Congress Street. Details here.