The History of Space Exploration

Sputnik 1

Oct 4, 1957

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

Laika

Nov 3, 1957

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

Explorer 1

Jan 31, 1958

The first Untied States satellite to orbit the Earth, "Explorer 1" is launched.

NASA is formed

Jul 29, 1958

NASA (National Aeronautics and Space Administration) is formed.

Yuri Gagarin

Apr 12, 1961

Soviet cosmonaut Yuri Gagarin becomes the first person in space. He orbits the Earth.

Alan Shepard

May 5, 1961

Alan Shepard becomes the first U.S. citizen in space.

John Glenn

Feb 20, 1962

Astrronaunt John Glenn becomes the first U.S. citizen to orbit the Earth.

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, Sautrn, Uranus, and Neptune - is launched.

Columbia - First Space Shuttle

Apr 12, 1981

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

The Challenger

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 25, 1990

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

The Pathfinder

Jul 4, 1997

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

Human Habitation

Nov 2, 2000

Human habitation in the International Space Station begins.

Columbia Explodes

Feb 1, 2003

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