What else did George Stephenson invent?

In addition to the locomotive, George Stephenson invented the "blasting engine" for coal mines and developed the first public railway, the Stockton and Darlington Railway, which opened in 1825. He also created the "locomotion" type of steam engine, which significantly improved the efficiency of rail transport. Furthermore, Stephenson contributed to the design of the standard gauge for railways, which facilitated the expansion of rail networks. His innovations laid the groundwork for modern rail travel.