Questions tagged [universe]

Concerning the entire universe, the universe itself, and alternate or parallel universes.

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2answers
245 views

Size of the universe, zipped

Compressed archives in computer science are, from some perspective, decreasing the data size by minimizing repetition of data. Take each particle (to any precision you prefer) in the whole universe, ...
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17answers
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How to prove that the solar system isn't inside of a localized physics bubble? [closed]

So, let's say that somewere out past the Oort Cloud, physics just kind of... changes. For whatever reason. Maybe space is magic, or maybe we're just in a weird sort of localized physics bubble. The ...
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Can Brian Greene's Ultimate Multiverse contain Cthulhu Mythos?

I'm wondering if Greene's Ultimate Multiverse could work like Heinlein's World as Myth concept or Stephen King's Dark Tower. 'Work' in a way that it could contain fictional universes. In this case, ...
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110 views

How does a community of a Universe Simulator have the same language as its creator? [closed]

This takes place in the optimistic future. While a war general is strategizing his plans of attack, he rejects using outdated war games of the past, and instead tasks a few members of his team to ...
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4answers
365 views

What would be the “scientific” explanation for having memories from a parallel universe?

This world is like ours but time travel is possible. The character and others have made time travelling in their past to change things but did not think about the consequences, so they created ...
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2answers
106 views

What are the Optimal Projects to Take Advantage of a Pocket Dimension with Variable Time? [closed]

Greetings from the University of Scienceton! We're very excited to announce the recent discovery (or creation) of a pocket universe where the flow of time varies dramatically as one gets farther into ...
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3answers
8k views

What would powers based on the four fundamental forces look like? [closed]

The four fundamental forces, those being Gravity, Electromagnetics, Strong Nuclear Force and Weak Nuclear force are said to be the forces that hold the universe together and so on. Based on that ...
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306 views

Staggering “Now” Among Many World Multiverses?

Regarding the Many World Multiverse, everything I've been reading (and searched on SE) seems to assume that each (parallel) universe is, at this moment, the same age. For my story, I need this to not ...
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In a parallel universe can there be non-carbon based lifeforms [duplicate]

In our universe, an organic compound is defined as a compound that contains carbon with an oxidation number lower than +4 (Citation needed.). In a parallel universe where chemistry laws are different, ...
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1answer
551 views

How do you prove mirrors aren't literally parallel universes? [closed]

See this post on Puzzling SE if you still want to answer. "Each mirror is a world of its own", Joe explains. "Joe, that's bullshit! Mirrors are just mirrors!" Rita proclaims. Joe proceeds to lay out ...
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1answer
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Is an identical recreation of our world's creation happening right now? [closed]

If we assume the scientific idea of parallel universes, assuming that all universes that exist now are different from each other in the present and/or past, and so a new universe is created every time ...
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3answers
519 views

Could a planet with no satellites and no tectonic plates be habitable? [closed]

If there was an earth-like planet in the habitable zone, without tectonic plates or a satellite what would its characteristics be like (structure, geology etc.)?
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446 views

Entropy of the afterlife

My world is based on the concept of afterlife, with a twist: people who died in other worlds are resurrecting in mine. Once in the afterlife world if they suffer another lethal injury or condition ...
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2answers
180 views

Other universes in a broad sense [closed]

When speaking about other universes people usually consider altered physical laws, while leaving logic and other basic things unchanged. What if to consider other universes based not on different ...
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5answers
607 views

Material for container that survived the Big Bang

I read a novel that mentioned about a past civilization before the Big Bang. They predicted such phenomenon would happen some day, and to preserve their species and recreate their population after the ...
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2answers
173 views

Death as a parallel or serial process [closed]

In this world, conscience takes a particular amount of -a special kind of - energy to be hosted by a functional brain. If prior and post life exists due to parallel universes, would you bet life and ...
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4answers
725 views

universe with infinite energy

In our universe infinite energy is not possible, at least given the known laws of physics. But in another universe what would allow for energy to be in the same amount as space? But how large is ...
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6answers
419 views

Is there any evidence against alternate realities?

In our fantasy series, the topic of Travelling between worlds is a major theme. Is the existence of other worlds actually possible? As a writer, it often feels less like coming up with a story and ...
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3answers
455 views

Escaping the universe

From Big Bang's theory, obvious is that our universe is just a balanced finite system subject to cycles of creation and destruction until at one certain point everything will run out causing an ...
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17answers
3k views

Lost in the multiverse: how to find home?

You have an individual who can travel backwards and forwards in time. They normally maintain an observer status but occasionally a butterfly is stepped on. Because, home is where the heart is, how ...
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2answers
78 views

The Universe's Own End [closed]

The Universe is always expanding and at a faster rate as time goes on. Like a rubber band, the more you stretch it, the more heat it contains. Does that apply to the universe and if so, will it reach ...
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2answers
164 views

Multi universal communication [closed]

With the laws of physics we know today an infinite multi-universe system is in theory perfectly possible and plausible . By multi universes I don't intend multiply different copies of our reality or ...
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2answers
120 views

Our Universe, but with a parallel component that is somehow connected to every location [closed]

I am looking to have a visual diagram that shows the structure of our physical Universe (I mean the physically recognized 3 dimensions) but with an additional sort of dimension(?) tacked on it. This "...
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3answers
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How do I destroy a duouniversal shield? [closed]

First, I'll explain what a duouniversal rock is. It's a rock that exists in two alternate universes, and always interact with each other, therefore making it virtually indestructible, only by ...
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1answer
117 views

What a reasonable person should conclude from these circumstances? [closed]

He found himself in an universe where he has some special powers compared to other people, but he is not omnipotent. He can affect physical reality but his possibilities are limited. His body does not ...
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10answers
5k views

Implications of Newtonian universe

I'd like to remove the speed of light limit from my world. However I don't want to just hand-wave the consequences. How should my universe look if: light travels at infinite speed, and so do gravity ...
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4answers
479 views

How does an advanced civilization *hasten* the heat death of the universe?

Other questions concern what to do to prevent or live through or slow the eventual heat death of the universe. This civilization is different: they want to bring it on, and they can't wait! This has ...
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5answers
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Can you just wait out the heat death of the universe?

Okay, so the heat death of the universe is approaching. You can't stop it. You can't dodge it. What do you do? You wait it out. According to wikipedia, about $10^{{10}^{56}}$ years after the heat ...
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4answers
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A brief dip into the heat death of the universe

Setting: Modern Earth; technology no more advanced that what's reasonable within the next thirty years. Premise: A prehistoric (and broken) alien device is discovered on Earth, and researchers ...
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2answers
559 views

How would a civilization similar to earth develop if there were no stars at night?

Stars and constellations have been for many civilizations,sources of wonder and mystery. We look at the stars so much, that we found patterns and shapes in the stars, and used them as guidance during ...
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1answer
169 views

Nitpicking a Multiverse [closed]

Let's say that there was a god attempting to create a multiverse to the specifications of a certain sci-fi horror cartoon ( rick and morty ) , but just the basic outlines. Which competing scientific ...
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26answers
30k views

How to survive the heat death of the universe?

The eventual heat death of the universe is an awful time to be alive considering you wouldn't have long left after the last star finally fades away. In this scenario there is a small group of about a ...
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4answers
316 views

Considering life to be a matter modifier - what would be the final state?

Imagine every organism is a matter-modifying and sorting mechanism within a very large chaos. Organisms believe their purpose is to evolve by reproduction and they're able to not wipe themselves out ...
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5answers
492 views

What physical constraints should a near omnipotent civilization consider when simulating a Universe?

Background The Foo are a universe spanning civilization ranking near IV on the Kardashev scale. As explained in this question, they have decided to devote their vast resources towards the ...
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4answers
594 views

Slowing the Heat Death of the Universe

I have an enormous civilization spanning a large amount of the universe. It is able to both travel and send information much faster than the speed of light without violating any laws of physics. ...
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3answers
577 views

Repulsive Universe

Gravity in our universe is an attractive force between bodies with mass [citation needed]. This allows matter to coalesce and form all the large scale structures we observe - planets, stars, galaxies, ...
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2answers
215 views

Size of time loop required for development

Inspired by How can civilizations develop if the day keeps repeating forever? A similar experiment happens and a time loop is now created. The start and stop of the time loop is same for the entire ...
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8answers
4k views

Universe where mathematics is different

There are many ways to conceive of a universe where physical constants are different to our own; however, what would the universe be like if mathematics itself were different? For instance, what ...
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5answers
555 views

Liquid universe: The beginning

The current Underwater tag challenge gave me an idea: What if the whole universe were actually liquid? To elaborate: How can a liquid universe come to life? Ultimately, I want to have a universe ...
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5answers
535 views

How to tag each parallel universes?

In a distant future humanity developed ways to traverse between parallel universes. It makes sense to mark our current universe in case we got lost, but how to do it? There is a possibility of an ...
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17answers
8k views

What if we lived near a boundary of the universe?

This answer and its follow-up discussion with the OP made me think, and boil it down to the essentials: We live in a universe that’s either infinite in spacial extent or unbounded, and wrap-around ...
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5answers
755 views

How can civilizations develop if the day keeps repeating forever?

Set in 2015, a highly classified experiment goes awry and as a result the entire universe including non-observable and all multiverses are trapped in an infinite time loop whereby each cycle lasts 24 ...
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4answers
253 views

Could cosmic background radiation be used as a means of cataloging parallel universes?

In a situation where you have people traveling between parallel Earths, where they dropped in with little ability to tell which Earth they are on, could checking cosmic background radiation be a ...
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6answers
247 views

Brain connection in an alternative universe

In my alternative universe a race called "Reflections" are the counterpart of humans. They are a reflection, hence the name, of actual humans on earth. Each human has a reflection in this alternate ...
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4answers
1k views

Consequences of a two-dimensional universe on cells and life

Suppose you have a 2+1 dimensional universe where the physics of that universe (we'll assume that the physics causes something similar to chemistry and that there is no gravity, but there is special ...
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4answers
582 views

Traveling Back in Time at the End of the Universe

Suppose humanity lives on for the next trillions upon trillions of years. One day we'll get to a point where no useful work can be done and hence no life can exist: the heat death of the universe. ...
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4answers
416 views

Small universe - is there any point in interstellar communication?

Everything on Earth and in the Solar system is as we know it. However it is discovered that we live in a small but unbounded universe. That is to say if we travel far enough in a straight line we will ...
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14answers
6k views

The universe is in a long, slow decline to darkness (the stars are going out) - What can we do about it?

The universe is in a long, slow decline to darkness Sorry folks but it's true, read the article! Here's a much edited-down version: The universe is cooling down, its stars pumping out about half ...
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3answers
500 views

Parallel universes, mirrored

My question regards mirroring, specifically what you would expect from a universe that was mirrored from the perspective of our own, regarding its interactions with our own. The mirroring works ...
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5answers
785 views

Alien exploration : drone digging earth crust

I was thinking of potential planet explorations, by extremely advanced alien species, through automated drones (or "flying laboratories") scanning and analyzing the planets. (By "extremely advanced", ...