Tour the Tomb of NASA's First and Last Nuclear Reactor

A gallery of images showing NASA's first and only nuclear reactor, which was built in the 1960s to research nuclear-powered airplanes, then eventually nuclear-powered space rockets. After being decommissioned in 1973, the site was demolished this year.

Updated: In addition to Plum Brook's nuclear fission reactor, NASA also developed two nuclear fusion devices – SUMMA and Bumpy Torus. Both were at NASA Lewis (now Glenn) Research Center, but the experiments never achieved ignition. A clarification was added to this story on June 21, 2012 at 11 a.m. EDT.