Today is Saturday, Oct. 4, the 277th day of 2025. There are 88 days left in the year. Today in history:On Oct. 4, 1957, the Space Age began as the Soviet Union launched Sputnik 1, the first artificial satellite, into orbit. Also on this date:In 1777, Gen. George Washington’s troops launched an assault on the British at Germantown, Pennsylvania, resulting in heavy American casualties and the retreat of Washington's Continental Army. In 1927, sculptor Gutzon Borglum began construction on what is now Mount Rushmore National Memorial.