The most important to mention is the proposed Manned Orbiting Laboratory:

The most important to mention is the proposed Manned Orbiting Laboratory:

Since the first manned flight of Shenzhou in 2003, we have not seen a new orbital vehicle arrive.

This space plane would be a two-stage-to-orbit spacecraft primarily used for space tourism.

It has been several years since the return of a manned orbital flight capacity for Americans.

Baikonur is famous cosmodrome site for the launch of the first manned orbital flight by Yuri Gagarin.

Baikonyr cosmodrome was the launch site of the first manned orbital flight by Yuri Gagarin.

Baikonur is the famous cosmodrome site for the launch of the first manned orbital flight by Yuri Gagarin.

1967 8 December: "plane crash": Robert Henry Lawrence, Jr. was named the first African-American astronaut for the U.S. Air Force Manned Orbiting Laboratory program, but he never made it into space.

1967 8 December: "plane crash": Robert Henry Lawrence, Jr. was named the first African-American astronaut for the U.S. Air Force Manned Orbiting Laboratory program, but he never made it into space.

Minolta Hi-Matic camera is used by astronaut John Glenn in his Friendship 7 mission, the first American manned orbital space flight

Smith and Goode’s claims are supported by documentary evidence released by the National Reconnaissance Office concerning a secret military Astronaut corps trained for the Manned Orbiting Laboratory program.

With these words, John Glenn started his stopwatch as he became the first American astronaut to achieve the first manned US orbital flight in his Mercury capsule, Friendship 7.

Standing room only - the world's tiniest manned suborbital vehicle