Steam power gave way almost immediately to electricity, which gave way to nuclear technologies, which gave way to information technology, all building on what came before.
And then there’s all the various transportation technologies that happened at the same time. Going from the first flight to the Moon in under 70 years it’s no wonder, to me at least, that people thought we’d be on Mars by now.
Especially with Walt Disney putting a Nazi rocket scientist on TV a bunch of times.