The first atomic bomb is tested in Alamogordo, New Mexico.
The US successfully tests the first hydrogen bomb at Eniwetok in the Marshall Islands.
The U.S. Air Force reveals a big B-52 bomber that could fly across continents to drop nuclear bombs.
The US successfully flew their first ICBM named The Atlas.
US successfully launched the first nuclear missile from a submarine. The submarine that launched the missile was named The Polaris.
The Soviet Union successfully tests a nuclear bomb named First Lightning.
The Soviet Union successfully tested their own hydrogen bomb in Kazakhstan.
The Soviet Union successfully flies the first ICBM.
The Soviet Union successfully launched a nuclear missile from a submarine in the White Sea.
The Tsar Bomba was the largest, most powerful nuclear weapon ever detonated.
The U.S. launches their first Satellite into Space. The Satellite is named Explorer 1.
The National Aeronautics and Space Administration (NASA) is formed.
US launches Discoverer XIV, which is the first camera equipped spy satellite.
Lunar Orbiter 1 enters orbit around the moon and takes the first picture of the Earth from that distance.
The US successfully sent two men, Neil Armstrong and Edwin "Buzz" Aldrin, to the moon. These men became the first to walk on the moon.
Soviet Union successfully launched the first satellite into space, and it entered into Earth's orbit. The satellite is named Sputnik.
The Soviet Union launches Sputnik 2 into space that carried a small dog named Laika.
The Soviet Union successfully sends Yuri Gagarin into space. He officially is the first man to orbit the Earth, and to be in space.
The Soviet Union sends Valentia Tereshkova into space, and she becomes the first woman in space.
The Soviet Union sends Alexei Leonov into space. He then spends 12 minutes outside of the Voskhod spacecraft, performing the first spacewalk.