Space Exploration Timeline

Sputnik 1

Oct 4, 1957

The Soviet satellite "Sputnik 1" is the first object sent into space and to successfully orbit the Earth.

Soviet dog, Laika goes to space

Nov 3, 1957

The first "Earthling", a Soviet dog named Laika, is successfully sent into space.

Explorer 1

Jan 31, 1958

The first United States satellite to orbit the Earth- "Explorer 1" -is launched.

NASA

Jul 29, 1958

NASA ( National Aeronautics and Space Administration) is formed.

Yuri Gagarin

Apr 12, 1961

Soviet Cosmonaut Yuri Gargarin becomes the first person in space. (he orbits the Earth)

Alan Shepard

May 5, 1961

Alan Shepard becomes the first United States citizen in space.

John Glenn

Feb 20, 1962

Astronaut John Glenn becomes the first United States citizen to orbit the Earth

First American space shuttle

Jul 19, 1963

The first American space shuttle is launched. This is the first "re-usable" space craft in history.

Neil Armstrong

Jul 20, 1969

Apollo 11 crew member Neil Armstrong is the first man to walk on the moon. His fellow crew member Edwin "Buzz" Aldrin is right behind him, making him the second man to walk on the moon.

Voyager II

Aug 20, 1977

Voyager II, the first space probe to fly by the four gas giant planets-Jupiter, Saturn, Uranus, and Neptune-is launched.

Columbia Space Shuttle

Apr 12, 1981

The space shuttle Columbia explodes upon re-entry into the Earth's atmosphere.

Challenger explodes

Jan 28, 1986

The space shuttle Challenger explodes shortly after take-off, killing all of its crew members including the first teacher in space, Christa McAuliffe.

Hubble Space Telescope

Apr 24, 1990

The Hubble Space Telescope is launched into orbit around the Earth.

Pathfinder lands on Mars

Jul 4, 1997

The un-manned American space probe "Pathfinder" lands on Mars and begins its successful exploration of the planet.

International Space Station begins

Nov 2, 2000

Human habitation in the International Space Station begins