Its first aircraft used for this purpose were four Aero Spacelines Super Guppy cargo planes, which were based on the Boeing 377 Stratocruiser. Interestingly, Boeing itself did not convert its ...

NASA retired its original Super Guppy in 1991, and the Pregnant Guppy was cut down for scrap; there were no replacement parts for these unique aircraft, and Aero Spacelines had long gone out of ...

Read more: 14 Best Fighter Planes And Jets Of All Time The Aero Spacelines Super Guppy is not an aircraft you'll be traveling on any time soon, as it's primarily a cargo aircraft. The vehicle is ...