Houston lays claim to NASA, but SA is not without its own space program, albeit one a little bit more down to earth. Spend an evening stargazing with the San Antonio League of Sidewalk Astronomers. Weather permitting, this long-running group of astronomy enthusiasts sets up telescopes at McAllister Park Trailhead every Wednesday at sunset. Examine celestial objects often obscured by the nightly veil of light pollution and learn a thing or two about the stars. On cloudy days, visit San Antonio College's Scobee Planetarium, which was renovated last year. San Antonio League of Sidewalk Astronomers, salsa-astro.com; Scobee Education Center, 1300 San Pedro Ave., (210) 486-0100, alamo.edu/sac/planetarium
