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

Researchers and USPS officials pose with stamp photos, formerly-covering curtains on the ground
NASA and United States Postal Service officials pulled the curtains back from new solar-system stamp designs after a spirited countdown at the World Stamp Show in New York City on May 31. L to R: Dan Durda; Constantine Tsang; Cindy Conrad; Alice Bowman; Alan Stern, New Horizons principal investigator, Southwest Research Institute; David Williams, COO and executive VP, USPS; Ellen Stofan, NASA chief scientist; Jim Green, NASA director of planetary science; Delontae Jenkins, National Oceanic and Atmospheric Administration; Norman Kuring, oceanographer, NASA Goddard Space Flight Center, Greenbelt, Md. (Image credit: USPS)

NEW YORK — 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 planets. The speakers also looked forward to the future of NASA exploration. Afterward, a long, snaking line of World Stamp Show attendees waited for autographs from the scientists — Pluto posters and stamp envelopes in tow.

"This is the best picture of Pluto ever made before New Horizons," Stern began, showing a blurred spot of gray a few pixels across. "Don't laugh — because I was the principal investigator, so I took that picture, more or less." [Photos: Space Age Postage Stamps Through History]

"Three billion miles away, that's all you can see in the distance," he added. "This is why we explore. We send spacecraft to the planets because we have to go closer to really reveal their true nature, to understand their origin. To understand our place in the universe."


World Stamp Show attendees lined up for scientist autographs after the presentation of the new "Pluto Explored" and "Views of Our Planet" stamps at the World Stamp Show in New York on May 31, 2016. (Image credit: Michael Soluri)

Stern joined speakers including Ellen Stofan, NASA chief scientist; Jim Green, NASA's director of planetary science; and Norman Kuring, an oceanographer at NASA's Goddard Spaceflight Center in Maryland who created NASA's famous "Blue Marble" view of Earth in 2012 from satellite data.


Stern and other speakers described the stamp that, 25 years ago, marked Pluto as "Not Yet Explored" — which acted as a "rallying cry" to carry out a mission to the far-off dwarf planet. When New Horizons finally lifted off in 2006, researchers put one of those stamps on board.

"It did help mobilize energy," Stern said. "And it did help many of us stay motivated during the many years it took to see a mission like New Horizons become funded. … [The probe] flew for 3 billion miles, nine and a half years, setting a speed record across the orbit of every planet in our solar system, Mars outward."


The title of the "Pluto—Explored!" stamps is a subtle nod to a 1991 USPS stamp that labeled Pluto "Not Yet Explored." (Image credit: USPS)

"Instead of the dull space rock that many of us expected — I plead guilty," Stofan said during her portion of the event, "Pluto has proved itself to be a complex and dynamic world with mountains, really cool moons, exotic ices and even a heart. (Stofan was referring to the heart-shaped plain visible on the dwarf planet's surface.)And after its flyby, New Horizons sent back a photo that went onto the updated Pluto stamp, revealing the dwarf planet for the first time in all its complex, textured glory. The probe also sent back a stream of data, which is still coming in today.


"The postal service rallied in near-record time with this updated stamp to set the record straight," she added.

USPS "Views of Our Planets" stamps depict Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. (Image credit: USPS)

Mary-Anne Penner, the United States Postal Services' director of stamp services, told that the agency was just waiting for Pluto's portrait before putting out the new classical planet series.

"We were already waiting. We knew it was coming," she said. "It takes about three years for a stamp to be developed, so it was actually there on the back burner, and we were just waiting to get the green light to get out of the gate."

While she couldn't speak to any new space-themed stamps coming out in the future, she said that space was a perennial favorite. "We love space," she said. "Everybody loves space, actually. That's probably one of the things we get the most inquiries on — what space stamps do you have out right now? What do you have surrounding space?"

So chances are, among the chosen few from the 40,000 stamp suggestions submitted per year, there are other gems that will show new views of the universe.

Email Sarah Lewin at or follow her @SarahExplains. Follow us @Spacedotcom, Facebook and Google+. Original article on

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Sarah Lewin
Associate Editor

Sarah Lewin started writing for in June of 2015 as a Staff Writer and became Associate Editor in 2019 . Her work has been featured by Scientific American, IEEE Spectrum, Quanta Magazine, Wired, The Scientist, Science Friday and WGBH's Inside NOVA. Sarah has an MA from NYU's Science, Health and Environmental Reporting Program and an AB in mathematics from Brown University. When not writing, reading or thinking about space, Sarah enjoys musical theatre and mathematical papercraft. She is currently Assistant News Editor at Scientific American. You can follow her on Twitter @SarahExplains.