Behold astronomer Dr. Frank Drake's equation used to estimate the number of tech-minded civilizations out there among the stars. This t-shirt features a description of each of the equation's variables, on the reverse side of the shirt.
--- A unique and easy gift for lovers of E.T., SETI fans, and explorers of time and space.
Shirt Front shows: Drake's equation.
Shirt Reverse shows: (See zoomed in photo for equation diagram)
☆ Soft & medium-weight white t-shirt
☆ Designed in-studio
☆ Runs Slim (see size chart in photos)
☆ 100% combed and ring-spun cotton (heather colors contain polyester)