Do these shows leave a realistic amount of time before we’re cruising around the galaxy? Interstellar travel makes less sense in the 21st century than it would in the 51st. Social dynamics: Do people behave the way we’d expect, given the timeframe and the technology? Historically, major advances in science have brought massive social change in their wake. No wonder the show stayed in space and rarely delved into the utopia back on Earth, which always felt more like an cool thought experiment than a realistic look at where social progress might take us. Technology: Netflix’s Lost in Space, the most recent entry on this list, may also have the most realistic depiction of technology. Technology: Since its first broadcast in November 1963, Doctor Who has played fast and loose with science and technology. The show has offered multiple futures for our planet, often showing technologies – such as self-aware plastic, instant cloning and “Fountain of youth” de-aging devices – far beyond where we’re at now. There are no aliens, and, apart from the assumed progress in space travel, no magical technologies along the lines of Star Trek’s replicators. Technology: Red Dwarf was a space sitcom with a simple premise: A mining ship from the 22nd century suffers a radiation leak.

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