We began the threat of Nuclear War being the first to test an atomic bomb.
This was the first atomic bomb dropped during war.
The US detonated the world's first thermonuclear weapon. This weapon was 1,000 times more powerful than conventional nuclear weapons. This put us in head of the SU for some time.
After the USSR started testing of their H- Bomb, the US got their funding back for the ICBM research, after getting it taken away in 1946.
This was the most serious confrontation between the US and the USSR. We discovered the Soviets were in the process of positioning nuclear missiles in Cuba.
This was the detonation of the SU's first atomic bomb.
They successfully have a hydrogen bomb test.
This missile was named the R-7. They posed a huge threat to the US, because they could now hit us from longer distances.
A USAF spy craft was shot down over USSR.
The SU exploded the most powerful bomb ever. It was a 58-megaton atmospheric nuclear weapon.
This was our first successful attempt at getting a satellite into outer space. That same year in July NASA was formed.
First successful weather satellite launched.
He is the first American in space.
This spacecraft transmits the first close range images of the Moon.
They are are first men to walk on the moon.
After the Open Skies was proposed, the US and SU embarked on the project to build, perfect, and launch the first non-military satellite. The SU launched the first one.
The SU sent the first animal to orbit the Earth to space. It was planned that she would run out of oxygen in 10 days of orbiting. There were thermal problems so she only survived a day.
It is the first man made object to orbit the sun.
He was the first man ever to be in space. He also orbited the Earth while in space.
The USSR sent Luna 10 into orbit. It was the first space craft to orbit the moon.
The USSR successfully docked in space, and transferred two crew members, then returned to Earth.