There’s a new Star Wars trailer out this week, which got me thinking. George Lucas’s space opera is famously soft sci-fi—so divorced from any actual science that it’s pretty much just fantasy. But there must be some technology in the series that’s actually based on something real, so what’s the most realistic invention, gadget, or machine in the galaxy far far away? —Jack
Unfortunately, when it comes to space technology, Star Wars takes liberties to new extremes. There is practically nothing real about its depiction of spaceflight. In real life, getting a single rocket off the surface of Earth and into space takes an excruciating amount of power and effort. It’s a process where a zillion things could go wrong and lead to catastrophic failure. And ships don’t move like airplanes in the vacuum of space.
To be fair, there are some aspects presented in Star Wars (and other works of science fiction) that scientists and engineers want to make into reality. One of the best examples is the artificial gravity depicted inside these ships. The lack of gravity in space can cause a host of problems for human bodies, and artificial gravity could help mitigate these effects.
In Star Wars, whether it’s on a space station as giant as the Death Star or inside a craft as small as an X-wing, the artificial gravity is just there, like some kind of ether. It makes no sense.
Still, many experts think we could simulate gravity in space by generating a high amount of centripetal force, à la 2001: A Space Odyssey. The closest humans have ever come to producing this effect was during NASA’s Gemini 8 mission in 1966, and this was only because an accident induced a high acceleration that forced the mission to terminate early. Later that year, Gemini 11 attempted to produce artificial gravity through rotation. The effect was too small to be felt by the astronauts onboard, although small objects were seen falling toward the end of the capsule.
While artificial gravity is not a high priority right now for anybody, experts continue to pitch new proposals for studying its implementation. We’re likely to see them taken more seriously as we pursue more long-duration missions. The general idea that you could simulate terrestrial gravity in a spacecraft is not unthinkable. It just requires a lot of smart engineering and the type of money and resources that exceed some countries’ annual GDPs.
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