اشكال الكواكب. شفق قطبي

; Johnson, Robert; Stepanek, Jan 2008 , Fundamentals of Aerospace Medicine 4th ed
, Addison-Wesley series in physics 2nd ed April 30, 1983 , "Aviation medicine

شفق قطبي

Stuart Wortley, Emmeline Charlotte E.

3
معلومات عن كوكب أورانوس
March 2011 , "Acute exposure to altitude", Journal of the Royal Army Medical Corps 157 1 : 85—91, doi:10
شفق قطبي
2001 , Physics, the human adventure: from Copernicus to Einstein and beyond 3rd ed
فضاء خارجي
, January 14, 2011: 1—69, retrieved2012-04-07
, PDF , San Antonio, Texas, pp , Bioastronautics Data Book 2nd ed
July 1995 , "History of the 2 Bash Symposium ASP Conference Series 352, p

معلومات عن كوكب أورانوس

Standard Atmosphere, 1976", Thermal Protection Systems Expert and Material Properties Database NASA , retrieved 2011-10-23.

11
فضاء خارجي
Holton, Gerald James; Brush, Stephen G
شفق قطبي
Gangale, Thomas 2006 , "Who Owns the Geostationary Orbit? Squire, Tom September 27, 2000 , "U
شفق قطبي