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(Redirected from Space Adventures M-55X)
Russian concept launch vehicle
"Explorer (space plane)" redirects here. For the Johnson/KSC NASA full sized mock-up, see Space Shuttle Explorer. For the fictional orbiter Explorer in the 2013 film, see Gravity (2013 film). For the fictional orbiter Independence in the 1998 film, see Armageddon (1998 film).
The Explorer spaceplane is a suborbital tourist spaceplane based on the C-21 design. The plane was being developed by Space Adventures with the Russian Federal Space Agency and was intended to carry 3 passengers. It is to be air-launched by carrier aircraft from a Space Adventures spaceport. Space Adventures abandoned the Explorer project in 2010 because "it got too expensive." It is unclear if Russia continues its development.