-First US nuclear weapon named "Trinity" from New Mexico.
-This marks the beginning of the Nuclear Age.
The US throws a uranium bomb over the Japanese city of Hiroshima, killing more than 140,000 people within months. (Overlap between Cold War/Arms Race and WWll)
(Destruction from bomb)
The US explodes a plutonium bomb over Nagasaki. An estimated 74,000 people die by the end of 1945.
The US raises the stakes in the nuclear arms race by creating the first hydrogen bomb in the Marshall Islands.
The US detonates a 17-megaton hydrogen bomb, “Bravo”, in the Pacific Ocean, contaminating a Japanese fishing boat, Lucky Dragon.
The Soviet Union explodes a nuclear weapon code-named “First Lightning” in Semipalatinsk, Kazakhstan. It becomes the second nation to develop and successfully test a nuclear device.
The Soviet Union achieves its first nuclear chain reaction in Moscow.
First thermonuclear, fusion or hydrogen bomb test carried out by the Soviet Union.
The Soviet Union explodes the most powerful bomb ever: a 58-megaton atmospheric nuclear weapon, nicknamed the “Tsar Bomba”, over Novaya Zemlya off northern Russia.
A stand-off begins when the US discovers Soviet missiles in Cuba. The US blockades Cuba for 13 days. The crisis brings the US and Soviet Union to the brink of nuclear war.
Vanguard 1, sponsored by NRL. (Naval Research Laboratory)
Named Vanguard 2, sponsored by NASA
Name: Discoverer 1
Name: GRAB 1
Name: Echo 1A
First artificial satellite that got signal from space. Name: Sputnik 1
First rocket engine restart in Earth orbit
First detection of solar wind. Name: Luna 1
First impact into Moon Name: Luna 2
First photos of far side of the Moon Name: Luna 3
First animals and plants returned alive from space Name: Korabl-Sputnik 2