This is the timeline of known spaceflights, both crewed and uncrewed, sorted chronologically by launch date. Owing to its large size, the timeline is split into smaller articles, one for each year since 1951. There is a separate list for all flights that occurred before 1951.
The year 1966 saw the peak and the end of the Gemini program. The program proved that docking in space and human EVA's could be done safely. It saw the first launch of the Saturn IB rocket, an important step in the Apollo program, and the launch of Luna 9, the first spacecraft to make a soft landing on a celestial object.
The United States National Space Science Data Center catalogued 157 spacecraft placed into orbit by launches which occurred in 1968. The first crewed Apollo missions occurred in 1968. It was also the year in which Earth lifeforms first left low Earth orbit, during the successful Zond 5 mission to the Moon and the Zond 6 lunar mission which crashed upon return, and the year that humans first left low Earth orbit, during the successful Apollo 8 mission to the Moon.
Luna 1 was the first spacecraft to leave the gravitational influence of Earth. Also in 1959, Luna 2 was the first spacecraft to reach the surface of another celestial body, impacting the Moon, and Luna 3 returned the first images of the far side of the Moon.
Explorer 1 was the first American satellite to reach orbit on 31 January 1958.
1973 saw the launch of the first American Space station known as Skylab on a Saturn V rocket.
The following is an outline of 1981 in spaceflight.
The following is an outline of 1983 in spaceflight.
On 29 March 1974 Mariner 10 became the first spacecraft to fly by Mercury, that saw a spacecraft for the first and last time in the 20th century.
The following is an outline of 1989 in spaceflight.
Spaceflight in 1977 included some important events such as the roll out of the Space Shuttle orbiter, Voyager 1 and Voyager space probes were launched. NASA received the Space Shuttle orbiter later named Enterprise, on 14 January. This unpowered sub-orbital space plane was launched off the top of a modified 747 and was flown uncrewed until 13 August until a human crew landed the Enterprise for the first time.
In 1975 several notable events happened in spaceflight such as the launch and arrival at Venus of Venera 9 and 10, the launch to Mars of the Viking orbiter/landers missions, the joint Apollo–Soyuz Test Project, and the launch of satellite Aryabhatta.
1978 saw the launch of the Pioneer Venus missions launched by the United States, on 20 May and 8 August. The Pioneer Venus Multiprobe landed four spacecraft on the planet, one of which transmitted data for 67 minutes before being destroyed by atmospheric pressure. ISEE-C, which was launched on 8 December, flew past comet 21P/Giacobini–Zinner in 1985, and Halley's Comet in 1986.
The following is an outline of 1976 in spaceflight.
This is a list of spaceflights launched between July and September 1964. For launches in the rest of the year, see 1964 in spaceflight (January–March), 1964 in spaceflight (April–June) and 1964 in spaceflight (October–December). For an overview of the whole year, see 1964 in spaceflight.
This is a list of spaceflights launched between January and June 1961. For launches between July and December, see 1961 in spaceflight (July–December). For an overview of the whole year, see 1961 in spaceflight.
This is a list of spaceflights launched between July and December 1961. For launches between January and June, see 1961 in spaceflight (January–June). For an overview of the whole year, see 1961 in spaceflight.
Australia
Proton-K 
Saturn V 
