John V. Becker, THE DEVELOPMENT OF WINGED REENTRY VEHICLES, 1952—1963Архивная копия от 17 марта 2013 на Wayback Machine. Unpublished study, 57 pp., 1983. NASA History Office’s Historical Reference Collection, Washington, DC: «our structures group saw no alternative pending the future development of a better high-temperature material, which at that time was often referred to as „unobtainium“ … In essence its lightweight ceramic blocks are the „unobtanium“ that we could only dream of in the '50’s and early '60’s.»
Jay Holben, Conquering new worldsАрхивная копия от 20 июня 2015 на Wayback Machine // American Cinematographer January 2010: «Pandora, where researchers have discovered a mineral, Unobtainium, that could help solve Earth’s energy crisis»
John V. Becker, THE DEVELOPMENT OF WINGED REENTRY VEHICLES, 1952—1963Архивная копия от 17 марта 2013 на Wayback Machine. Unpublished study, 57 pp., 1983. NASA History Office’s Historical Reference Collection, Washington, DC: «our structures group saw no alternative pending the future development of a better high-temperature material, which at that time was often referred to as „unobtainium“ … In essence its lightweight ceramic blocks are the „unobtanium“ that we could only dream of in the '50’s and early '60’s.»
Jay Holben, Conquering new worldsАрхивная копия от 20 июня 2015 на Wayback Machine // American Cinematographer January 2010: «Pandora, where researchers have discovered a mineral, Unobtainium, that could help solve Earth’s energy crisis»
