ORBit: Timeline

1483   Orbital calculations suggest that on this day Pluto Pluto

Pluto is the second-largest known dwarf planet [i] in the solar system [i]. ... 

 moved inside Neptune Neptune

Neptune is the eighth and outermost planet [i] in our solar system [i]. ... 

's orbit until July 23, 1503.

1964   The Soviet Union launches the Voskhod 1 into Earth orbit as the first spacecraft with a multi-person crew and the first flight without space suits.

1968   Apollo program: NASA NASA

The National Aeronautics and Space Administration is an agency of the United States Government [i], res ... 

 launches ''Apollo 7'', the first manned Apollo mission (Wally Schirra, Donn Eisele, Walter Cunningham). Goals for the mission include the first live television Television

Television is a telecommunication [i] system for ... 

 broadcast from orbit and testing the lunar module docking maneuver.

1975   Apollo-Soyuz Test Project: An American Apollo and a Soviet Soyuz spacecraft dock with each other in orbit, marking the first such link-up between spacecraft from the two nations.

1988   In the Soviet Union Soviet Union

The Union of Soviet Socialist Republics , more commonly known as the Soviet Union, was a Communist state [i] ... 

, the uncrewed Shuttle ''Buran'' is launched by an Energia rocket on her maiden orbital spaceflight (the first and last space flight for the shuttle).

1990   The Space Shuttle ''Discovery Discovery

Discovery may refer to: ... 

'' places the Hubble Space Telescope Hubble Space Telescope

The Hubble Space Telescope is a telescope [i] in orbit [i] around the Earth [i].... 

 into orbit.