The t-shirt deal of the day over at RIPT Apparel is a Doctor Who-inspired shirt called “The Impossible Astronaut” by artist 6amcrisis.

The tee went on sale at RIPT today, Friday, June 10, 2011, at midnight CST, and will continue for 24 hours from then, and once it’s over, it will not be sold on the site anymore.

The design is based on the Doctor Who Season 6 episode titled The Impossible Astronaut.

The t-shirt is available in men’s and women’s sizes for $10 each in black. Kids sizes are $15 (Boys, Girls, and Toddler in black); Onesies are $18 (in black). You can also get the design on a Hoodie for $38 (in Men/Unisex sizes in black).

Hurry up and buy this shirt… then forget about it.