Well, 'A Wrinkle in Time' by Madeleine L'Engle has elements of parallel universes. It's about a girl traveling through different dimensions to save her father. Then there's 'The Chronicles of Narnia' series. Although it's more of a fantasy, it can be considered to have parallel universe - like concepts as the characters move between our world and Narnia. And don't forget 'Mirror Dance' by Lois McMaster Bujold which also touches on parallel selves in different universes.
One common theme is the idea of alternate versions of oneself. In many science fiction stories, characters discover parallel universes where they exist but with different personalities, life choices, or fates. Another theme is different technological or social developments. For example, in some parallel universes, technology might be far more advanced or primitive compared to the 'original' universe. Also, the concept of different laws of physics often appears. This can lead to strange and fascinating phenomena like different gravitational forces or the ability to manipulate time in ways not possible in our own universe.
Parallel universe science fiction novels explore identity in complex ways. In 'His Dark Materials' trilogy, the daemons are a part of a person's identity. In different parallel universes, the relationship between a character and their daemon can change, which reflects on their identity. Also, in novels like 'Sliders', when the characters slide into different universes, they have to adapt to new identities or at least re - evaluate their own. They might find that in one universe they are a powerful leader, while in another they are a lowly peasant. This shows that identity is not just an internal concept but is also shaped by the external world of the parallel universe.
I recommend Pandora, the Time and Space Magic Box, to you. It was a fantasy-alternative fantasy novel that described the adventures of the protagonist Su Yu in different worlds in a parallel universe. There was also a description of what happened on the spaceship, which was very exciting. I hope you like my recommendation.😗
A large number of science fiction novels would mention concepts such as parallel universes and spatial rifts.
Parallel universes referred to different universes. Each universe was independent to some extent. There might be multiple parallel universes. There might be different historical events, people, creatures, and environments in these universes. In science fiction, parallel universes were often used as a means to explore parallel worlds and multiple reality.
A spatial rift was a small spatial separation in the universe that usually led to the connection or separation of different universes. In science fiction, spatial rifts were often used as a way to achieve time travel or space jump.
The wide application of these cosmic concepts in science fiction allowed readers to experience infinite possibilities and imagination by imagining different universes and scenes.
Start by imagining unique rules and physics for your parallel universe. Make them different enough from our reality to be exciting. Then, create characters that have compelling reasons to be in or interact with this universe.
Parallel universes referred to the theory of multiple universes existing in the same space-time. In recent years, there have been a few movies about parallel universes. Here are some famous movies:
1 "Parallel Universe: Demon's Eye"(Rampage Hollywood): This is an American sci-fi action film released in 2017 that tells the story of a superhero in a parallel universe.
2 Time Travel: Back to the Future (Back to the Future 2): This is an American sci-fi movie released in 2013. It tells the story of a man who travels to the past in the future to try to stop his wife from falling in love with another man.
3 Source Code (Source Code): This is a 2014 American sci-fi movie about a soldier who used a parallel universe technology to enter a different timeline during a terrorist attack and try to prevent the event from happening.
Interstellar: This is a 2014 American sci-fi movie about a group of astronauts crossing parallel universes to find a new home for humans.
5 Black Mirror: Bandersnap: This is a British sci-fi film released in 2018 about a programmer who finds himself trapped in a parallel universe while trying to create a video game.
These were just some of the many outstanding works in the parallel universe.
I recommend the two novels,"New Krypton in D.C." and "The Invincible Journey to Planet Ora" to you. The former told the story of a man who left Krypton before it was destroyed. After being exiled to deep space by Jor-El, he searched for his adoptive father and younger brother. The latter was the story of an ordinary otaku who transmigrated to the Otto world and became the Tiga Ultraman in a parallel universe, obtaining the transmutation system. I hope you like this fairy's recommendation. Muah ~😗
The parallel universe and the main universe in the American manga could be distinguished by whether they were the same as the original story line.
Parallel universes referred to universes that were different from the original storyline. These universes might have the same characters, characters, and plots, but they were different in some ways. For example, in Marvel Comics, Iron Man also exists in another universe. Iron Man in this universe may have different abilities or experience different storylines.
The main universe was the universe where the original story line was located. It usually had all the characters and plots, and it was the universe that the audience was familiar with. In Marvel Comics, the main universe was usually the central universe of all the parallel universes. All the stories of the parallel universes took place in the main universe.
In addition, parallel universes could also be distinguished by whether they were related to the original story line. For example, in Marvel Comics, Iron Man might be associated with another protagonist in another universe, so this universe could be called a " parallel universe series."
To distinguish between the parallel universe and the main universe in the American manga, one needed to understand whether they were the same as the original story line, whether they were related, and whether they belonged to the same universe.