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Science fiction is one of anime’s most versatile genres and something that the medium has embraced since its infancy. While a broader framework defines sci-fi’s rules and limitations, there are so many subgenres that fit into this space, each offering more specific modes of storytelling. “Hard sci-fi,” for instance, is a subset that distances itself from unexplainable technology or the use of fantastical concepts – or even magic – as a narrative engine.
It’s instead a style of science fiction that prioritizes scientific accuracy and rational logic, doing its best to ground these concepts in the real world and its laws. Hard sci-fi anime focuses on actual science – whether it’s engineering, physics, or astronomy – rather than hand-waving away complex concepts. These anime may tackle radical ideas, but they make them feel natural and possible. There are some incredibly rewarding hard sci-fi anime out there, but some titles easily dominate the genre and rise above the rest.
Planetes Offers A Grounded Look At Early Space Colonization Through A Space Debris Clean-Up Crew
Anime fans have their share of options when it comes to bold space operas that feature elaborate mecha and alien conflicts. Planetes is an anime that celebrates the glorious awe-inspiring nature of outer space, but does so in a manner that boils down to authentic space physics and engineering, with a slice-of-life workplace dynamic. Planetes puts a spotlight on a necessary but often overlooked group of people who handle the unglamorous task of managing space debris that can damage other space stations.
The work the crew of the Toy Box does is genuinely fascinating and the sort of stuff that often gets pushed aside in soft sci-fi series. There's also an authentic breakdown of how the vacuum of space operates and how a minuscule piece of debris can become a cataclysmic danger to a spacecraft's exterior. The same attention to detail is applied to Planetes' look at orbital mechanics. Planetes presents a painstakingly realistic depiction of what space colonization may look like in 2075 while it also digs into the personal drama and working relationships of this blue-collar crew.
Ghost In The Shell: Stand Alone Complex Blends A Predictive Cyberpunk World With Hard Sci-Fi
Masamune Shirow's Ghost in the Shell is a prototypical cyberpunk anime that helped develop the genre's language and has, unsurprisingly, seen a rich expansion that includes sequels, spin-offs, and reboots. Ghost in the Shell: Stand Alone Complex, a two-season series, excels as a cyberpunk triumph while also acting as a monumental hard sci-fi series. Admittedly, Stand Alone Complex features exaggerated ideas, characters, and technology, but its futuristic concepts are surprisingly grounded in its examination of artificial intelligence, cybernetic engineering, and how wired networks operate.
Guess the Anime
Guess the anime from the emojis.A lot of Stand Alone Complex involves hacking into networked minds and co-opting artificial intelligence, but it's not hard to picture these ideas coming to fruition in the future. Certain concepts like cyberterrorism are already very much a reality. Ghost in the Shell: Stand Alone Complex works so well because it mixes serialized story arcs with episodic police procedural escapades that collectively showcase this world and how it works.
Legend Of The Galactic Heroes' Endless Space War Is Grounded In Physics & Geopolitics Instead Of Magical Technology
Legend of the Galactic Heroes is a revered sci-fi classic often regarded as the definitive space-opera anime. The anime throws the audience into the middle of a brutal war that's been going on for centuries between two dominant forces, the Free Planets Alliance and the Galactic Empire. These two factions clash in an ever-evolving power struggle, filtered through two rival military prodigies who gradually rise through the ranks of their respective sides.
Legend of the Galactic Heroes' sprawling saga plays out over more than 100 episodes, which allows its sci-fi drama to properly develop. The anime also avoids any sort of "space magic," battle strategies, geopolitics, or technology, all of which draw on practical concepts, such as using gravity to one's advantage.
Space Brothers Provides A Realistic Look At What It Takes To Be An Astronaut
Space Brothers flawlessly blends slice-of-life human drama with hard sci-fi that feels incredibly approachable. The anime follows two brothers who, as children, made a pact to become astronauts. Hibito has followed through on his dream, but Mutta has faced greater hurdles in his life. The anime kicks off with Mutta, after experiencing yet another setback, recommitting himself to his childhood promise and entering a rigorous training program to become an astronaut and join his brother in space. Space Brothers breaks down what it takes to be an astronaut in a grounded, meticulous manner.
It'd be so easy to incorporate advanced technology from the future that doesn't ring true and is only present to look cool or expedite the process. Space Brothers is determined to realistically depict NASA and JAXA and to obey the real principles and physics essential to space exploration. NASA even allowed Space Brothers' production team to visit its Houston facilities so that nothing feels artificial. Space Brothers is a beautiful story of commitment, endurance, and following one's dreams, but audiences will be surprised by how much they learn about engineering, physics, and how space agencies operate along the way.
Armored Trooper VOTOMS Presents Mechs As Practical Military Hardware
Armored Trooper VOTOMS is a standout '80s mecha anime that follows a disgraced pilot's quest for redemption and revenge amid a galactic war rife with disturbing conspiracies. Chirico Cuvie is on the run from the government after being framed for a crime he didn't commit, which gives the anime a propulsive, character-driven focus that effectively highlights how war transforms soldiers into expendable casualties.
Armored Trooper VOTOMS also adopts a unique perspective in which its mechas — the titular Armored Troopers — are treated as disposable hardware, discarded after they run out of fuel or become damaged. They're nothing like the grandiose mobile suits and Gundams that populate Sunrise's signature mecha franchise. Everything about the Armored Troopers is realistic and grounded, whether it's the limited munitions that they carry or their inability to fly through space. They're literally grounded and move on treads.
Patlabor: The Mobile Police - The TV Series Uses Mobile Suits To Assist In Blue-Collar Labor
Patlabor is a groundbreaking mecha alternative from the '80s and '90s that intentionally went against the heightened combat and spectacle of franchises like Mobile Suit Gundam and Space Runaway Ideon by turning mechs into tools for manual labor. This technology, known as Labors, aids blue-collar tasks and police work. Patlabor: The Mobile Police - The TV Series fluctuates between police procedural and slice-of-life workplace comedy, but it all ultimately comes back to a grounded hard-sci-fi foundation.
It's easy to picture a futuristic society using mechs in exactly this fashion, rather than the "Super Robot" standards explored by so many other sci-fi anime. In addition to Patlabor's exploration of practical and practical mechs, the anime also realistically depicts bureaucratic red tape and administrative woes that impede the Tokyo Metropolitan Police's Second Special Vehicles Division's work.
Astra Lost In Space Uses Astrophysics & Math To Save A Group Of Stranded Teens
Astra Lost in Space looks at nine high school students who become stranded over 5000 light-years away from home on an abandoned spaceship. The anime functions as a sci-fi pseudo-Lord of the Flies, in which these teenagers must figure out how to get back home while also managing scarce resources. Astra Lost in Space could easily devolve into fantastical futuristic concepts to solve this problem, especially when wormholes and FTL travel are introduced early on in the story.
To its credit, Astra Lost in Space banks on actual astrophysics, math, and ecology to aid its characters' survival and return home. Even alien planets visited for resources avoid exaggerated extraterrestrial elements in favor of ecosystems and environments that could actually be plausible in space. One of the biggest obstacles the teen crew faces is keeping track of their H2O, calories, and nutrients so they can survive a months-long journey.
