There are only a few kinds of energy-- kinetic, elastic, and gravitational, for example. If you're reading this, then gravity is currently exerting its inexorable force on you! This gravity brings me down astronaut design pays homage to space and science.
Crazy about space, astronomy, physics, and all things science? This cute science lover shirt "I'm A Luna-tic" with a cute moon illustration. Perfect for moon lovers, scientists, teachers, professors, science lovers, geeks and nerds who love space!