The famous Union Pacific Big Boy was the heaviest steam locomotive ever built when it became operational in the 1940s. An icon of the American railroads, it was retired from service in 1959 as the ...

Steam trains were one of the most powerful vehicles of their time, capable of pulling hundreds of cars in one go. Their sheer size, speed, and weight are mesmerizing to think about and captivating to ...

Steam turbine-powered locomotives never really caught on. Similar to gas turbine engines, steam turbines are efficient at certain rpm, and extremely inefficient at many others. At high speeds, they ...