Cool Astronaut and Space T-Shirts

Sally Ride, the first American woman to travel to space, turns 60 today! In her postastronaut career, she's continued to dedicate herself to science, investigating both the Space Shuttle Challenger and Columbia accidents, writing five science books for children, and founding Sally Ride Science, an organization helping women pursue tech- and science-related careers. To celebrate her birthday — and our love of astronauts in general — we've gathered 10 astronaut tees to flaunt our gravity-defying interest in space.