Events with tag - Radiation

August 9, 1945

Nagasaki Atomic Bombing

The United States dropped the atomic bomb 'Fat Man' on Nagasaki, Japan, killing approximately 74,000 people and destroying 68% of the city's industrial district. This second atomic bombing, following Hiroshima, led to Japan's surrender and the end of World War II.

January 31, 1958

Explorer 1 Launch

The historic launch of Explorer 1, America's first successful satellite, marked the nation's entry into the Space Age and led to the groundbreaking discovery of the Van Allen radiation belts.

May 20, 1964

Discovery of Background Radiation

In 1964, American astronomers Arno Penzias and Robert Wilson made a groundbreaking discovery of cosmic microwave background radiation, which provided crucial evidence supporting the Big Bang theory. For this accidental but extremely significant discovery, they were awarded the Nobel Prize in Physics in 1978.