Pluto Stamp Palooza! Philatelic Fans and NASA Cheer Dwarf Planet Postage

Alan Stern and other NASA officials celebrated the release of new "Pluto — Explored!" and "Views of our Planets" stamps Tuesday (May 31) with a crowd of more than 500 stamp enthusiasts, leading a spirited countdown to the official reveal of the new stamps. Stern, the principal investigator of the New Horizons mission that flew by Pluto last July, and the other researchers spoke to the significance of the Pluto flyby and the fact that America was the first to reach all nine classical p