For the next several meetups, starting Feb. 20, we will be going through James Callahan's The Geometry of Spacetime, a book on special and general relativity that seems approachable to people with math backgrounds. At the first meeting, we will discuss chapter 1, with a member explaining each section of the chapter and presenting supplementary papers where appropriate. We will hand out copies of the chapter to all in attendance (please RSVP so I know how many copies to make), and then ask you to read them before the following meetup. Hopefully, this will prove to be a great way to learn, and a whole lot of fun! We will be meeting at Third Place Books on the corner of NE 20th Ave and 65th St, at 1:30 pm, Saturday, Feb. 20th.