Sept. 23 (UPI) -- On this date in history:
In 1806, U.S. explorers Meriwether Lewis and William Clark returned to St. Louis on their historic journey from the Mississippi River to the Pacific Coast and back. The duo received translation and diplomatic help from Shoshone woman Sacagawea on the more-than-two-year journey.
In 1846, German astronomer Johann Gottfried Galle discovered the planet Neptune at the Berlin Observatory. Neptune generally is the eighth planet from the sun.
In 1909, Gaston Leroux's Phantom of the Opera was published.
Composer Andrew Lloyd Webber takes part in curtain call ceremonies on January 9, 2006, at New York's Majestic Theatre to mark that "Phantom of the Opera" has become the longest running musical show in Broadway history with it's 7,486th performance. File Photo by Ezio Petersen/UPI
