RT @dsfpspacefl1ght: New Spaceflight History blog post – “Essential Data”: A 1963 Pitch to Expand NASA’s Robotic Exploration Programs -… twitter.com/i/web/status/8…
RT @dsfpspacefl1ght: New Spaceflight History blog post – “Essential Data”: A 1963 Pitch to Expand NASA’s Robotic Exploration Programs -… twitter.com/i/web/status/8…