The Jupiter and Lake Worth Railway was a narrow gauge railway with a connection between the Jacksonville, Tampa and Key West Railway system in Florida. It connected the Lake Worth Lagoon at Juno to the Jupiter Inlet at Jupiter. With intermediate stops at Venus and Mars, the railroad was often called the Celestial Railroad, with the first use of that name appearing in the March 1893 issue of Harper's New Monthly Magazine in an article written by Julian Ralph. A report published by the town of Jupiter in 2012 noted that Mars and Venus "were not much more than loading platforms."
The purpose of the railroad was to link the Lake Worth and Jupiter inlets, both of which had Plant System steamboat lines. The Indian River Steamboat Company went north through the Jupiter Inlet and connected waterways (now part of the Intracoastal Waterway) to Titusville. There were no turning tracks, so the locomotives always pointed towards Juno, forcing trains making the return trip to go in reverse. Fare was rather high for the time, being , a maximum total of 75 cents.
Henry Flagler, the owner of the Florida East Coast Railway, rejected the high price, instead building his own line to the west. The new railroad was finished in February 1894, and the Jupiter and Lake Worth Railway was gone by June 1896.