Black Knight satellite
From MysteryWiki
References
- Associated Press. "Dark Satellite Remains Mystery; Unclaimed by All." The Southeast Missourian [Cape Girardeau] 11 Feb. 1960: 14. Print.
- STS088-724-66_3.JPG. Digital image. The Gateway to Astronaut Photography of Earth. Earth Science and Remote Sensing Unit, NASA-Johnson Space Center, n.d. Web. 5 Nov. 2014.