One example of a specialty license plate was a plate issued in 1987 by the state of Florida to commemorate the Space Shuttle Challenger disaster. Proceeds benefit the Astronauts Memorial Foundation, and funded the construction and maintenance of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Merritt Island, Florida. The current version of the plate, and the second revision since its inception, introduced in 2004, commemorates both "Challenger" and "Columbia". It remained the most popular of all of Florida's specialty plates until it was overtaken by a plate to support the critically endangered Florida panther. In 2006, it was outsold by a plate for the University of Florida. Florida currently offers 122 specialty plates, more than any other state, while other states offer only a few.