1) The Cuban Missile Crisis in 1962 brought the United States and the Soviet Union to the brink of nuclear war during the Cold War.

2) The first photograph of a black hole was captured in 2019 using a network of telescopes around the world.

3) The world's largest volcano, Mauna Loa in Hawaii, is also one of the most active. It stands over 13,000 feet (4,000 meters) above sea level.

4) Elvis Presley, often referred to as the "King of Rock and Roll," has sold over one billion records worldwide.