AIR & SPACE MAGAZINE Five Years Gone Pioneer 10, the first outer planets explorer, was last heard from on January 22, 2003. January 22, 2008 Pioneer 10, the first outer planets explorer, was last heard from on January 22, 2003. AirSpaceMag.com Recommended Videos Post a Comment
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/plaque.jpg)