You'll have to be at least 13 years old to participate, but there's even an option for the camera shy: You're welcome to skip the image upload and simply enter your name. Participating in the program also nets you a printable commemorative Flight Certificate signed by the shuttle's Mission Commander after the spacecraft returns.
Although various personal ephemera have accompanied NASA missions in the past, this is the first time the agency has invited the public to send their own portraits into space. I just secured my head's slot on the September 16 STS-133 Discovery mission, or you can choose the final STS-134 Endeavour launch in November to get your face into orbit.
Will your countenance be aboard one of the final upcoming shuttle missions?
[via Major Nelson]