Originally created by NASA in the 1960's, they were brought to the consumer market by Pilsbury. Since then, the product was taken over by RetroFuture Products, LLC.
Space Food Sticks are no longer sticks. They're now bite-sized pieces. Each package contains 10 pieces, and come in two flavors, "Chocolate" and, "Peanut Butter". Each piece offers 21 calories of carbs, proteins, and fat.
The company actually sent me samples for review, but I have a problem with eating stuff that strangers send me in the mail. On the other hand, Cybele May at CandyBlog is braver than I and produced a detailed review. Check it out.
You can buy Space Food Sticks online from the company's website for a price of $29.95 for a case: http://www.spacefoodsticks.com