The crew of Soviet spacecraft 'Soyuz 11' dies after the loss of air supply.
The US Mariner 9 was launched – it went on to become the first satellite to orbit Mars.
The Soviet Union launches the world's first manned space station.
Astronaut Alan Shepard was the first to hit a golf ball on the Moon.
The Soviet Union launches the Luna 16.
Venera 7 launched by the Soviet Union.
Apollo 12 lifts off.
The Apollo 11 astronauts were released from a three-week quarantine following their liftoff from the moon.
Apollo 11 landed on the Moon with astronauts Neil Armstrong, Buzz Aldrin, and Michael Collins.
Pulsar is first observed.
The Soviet Probe Venera 4 entered Venus' atmosphere and sent back information to Earth for about 90 minutes before it lost contact.
Outer Space Treaty is enforced.
Robert H. Lawrence, Jr. was selected as the first African-American astronaut.
The Outer Space Treaty was signed to prevent the use of nuclear weapons being utilized in space.
Astronomer Richard Walker discovered Saturn's moon, Epimetheus.
First images of a Solar Eclipse taken from space.
The Venera 3 space probe became the first human-made object to land on another planet.
Luna 9 touches down on the Moon.
The first weather satellite (ESSA-1) was launched into orbit from Cape Canaveral, Florida.
The Gemini V spacecraft returned to Earth, landing in the Atlantic Ocean.
Mars flyby of Mariner 4.
The idea of the Big Bang Theory being the creation of the universe was supported by scientists.
Millions watch NASA spacecraft Ranger 9 crash into the Moon.
Cosmonaut Alexey Leonov made the first spacewalk when he left his Voskhod 2 spacecraft.
World's First Geostationary Satellite is Launched.
First Person to Enter Space Twice.
Syncom 2, the world's first geosynchronous communications satellite is launched.
Cosmonaut Valentina Tereshkova became the first woman in space.
Canada launches its 1st satellite.
NASA Launches Mariner 2.
The Soviet Space Agency Launches Vostok 3.
Scott Carpenter orbited the Earth three times in the US Aurora 7.
Enos, the chimpanzee, was launched into space on the Mercury-Atlas 5 Mission.
US President John F. Kennedy addressed Congress and promised to put a man on the moon within a decade.
Sputnik 5 is launched by USSR.
Vanguard 3 is launched into Earth's orbit.
The US Air Force launched the Discoverer 1 reconnaissance satellite.
Luna 1 is launched.
Sputnik 1 falls to Earth from orbit.
Sputnik 1 became Earth's first artificial satellite to go into orbit.
A V-2 rocket captured the first photograph of Earth from outer space.
Pluto was officially named.
American astronomer Clyde Tombaugh discovered Pluto.
Robert Goddard launched his second liquid-fueled rocket.
The world's first liquid-fueled rocket was launched.
Astronomer Edwin Hubble formally announced the existence of other galactic systems at a meeting of the American Astronomical Society.
The New York Times published Edwin Hubble's discovery that the Andromeda 'nebula' is actually a galaxy.
Mars had a 'close encounter' with Earth at 34.8 million miles apart.
Carl Gustav Witt discovered the first near-Earth asteroid, 433 Eros.
American Astronomer William Henry Pickering discovered Phoebe, one of Saturn's moons.
