Associated Press

On Oct. 4, 1957, the Space Age began as the Soviet Union launched Sputnik 1, the first artificial satellite, into orbit.

In 1965, Pope Paul VI became the first pope to visit the Western Hemisphere as he addressed the U.N. General Assembly.

In 1970, rock singer Janis Joplin was found dead in her Hollywood hotel room at age 27.

In 1990, for the first time in nearly six decades, German lawmakers met in the Reichstag for the first meeting of the nation’s reunified parliament.

In 2010, the Supreme Court began a new era with three women serving together for the first time as Elena Kagan took her place at the end of the bench.

In 2017, President Donald Trump visited hospital bedsides and a police base in Las Vegas in the aftermath of the shooting rampage three nights earlier that left 58 people dead.