Top 10 Space Memorabilia and Collectibles
ATK/NASA Constellation Program Commemorative Medallion
With an eye on taking humans deeper into space than ever before, NASA ushered in a new era in 2005 with the Constellation program. The short-lived program, cancelled after just five years, was gearing up to put men back on the moon. That brief but substantial period in NASA's history can be celebrated with the ATK/NASA Constellation Program Commemorative Medallion, which contains metals flown on Ares 1-X and Orion PA-1. Only available on SPACE.com, the limited-edition medallion highlights the program's slogan "Moon, Mars, and Beyond."