Traveling to alternate universes

  • Context: High School 
  • Thread starter Thread starter imagIne71
  • Start date Start date
Click For Summary

Discussion Overview

The discussion centers on the concept of traveling to alternate universes, exploring both the theoretical implications and the feasibility of such travel. Participants engage with the idea from various angles, including scientific, philosophical, and speculative perspectives.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Exploratory

Main Points Raised

  • Some participants assert that traveling to alternate universes is impossible due to causal disconnection from our universe.
  • Others speculate that if alternate universes exist, there might be ways to access them, though this remains purely hypothetical.
  • A participant emphasizes the importance of distinguishing between science and science fiction, suggesting that many overlook this distinction.
  • One participant introduces string theory and eternal inflation as frameworks that predict a multiverse, but maintains that travel to these universes is not feasible.
  • Another participant raises questions about the definitions and interpretations of "alternate universes," suggesting that clarity in terminology is crucial for meaningful discussion.
  • There are humorous exchanges regarding the interpretation of "science fiction," with some participants suggesting that discussions involving this term should be redirected.
  • A participant mentions the semantic implications of the term "universe," arguing that if an alternate place exists, it would inherently be part of the same universe.

Areas of Agreement / Disagreement

Participants generally disagree on the possibility of traveling to alternate universes, with some firmly stating it is impossible while others entertain the idea hypothetically. There is no consensus on definitions or interpretations of what constitutes an "alternate universe."

Contextual Notes

Participants express varying assumptions about the nature of alternate universes, and the discussion reveals a lack of clarity regarding definitions and the implications of different models. Some arguments depend on specific interpretations of scientific theories, which remain unresolved.

imagIne71
Messages
1
Reaction score
0
TL;DR
How can we travel to another universe?
How can we travel from one alternate universe to another?, how could we prove that it has happened?
 
Space news on Phys.org
We can't so we couldn't. If there ARE "alternate universes" (something I personally don't agree /w) they are causally disconnected from ours.
 
There is no way to "travel to alternate universes". To many people who love "science fiction" ignore the second word in that phrase.
 
  • Like
Likes   Reactions: russ_watters
but maybe there is an alternative universe where that is possible
 
  • Like
Likes   Reactions: russ_watters
BWV said:
but maybe there is an alternative universe where that is possible
Irrelevant since even if it existed it would be causally disconnected from US
 
judiefletcher said:
There is no way to "travel to alternate universes". To many people who love "science fiction" ignore the second word in that phrase.
I think you mean ignore the first word.
 
phinds said:
Irrelevant since even if it existed it would be causally disconnected from US
That was a joke
 
imagIne71 said:
Summary:: How can we travel to another universe?

How can we travel from one alternate universe to another?, how could we prove that it has happened?

Given our current state of technology, I would think just getting to our nearest star Alpha Centauri would be a huge deal. Travelling to the center of our galaxy or to the other side of it? Now that's still in the realm of science fiction. Getting to the closest neighboring galaxy to us, the Andromeda? Even the characters in Star Wars or Star Trek weren't doing that. Reaching the galaxies we see in the deep space photos from the Hubble? I don't think that's EVER going to happen. Reaching parallel universes, if they exist? Just have to shake your head at that one.

But then again, never say never... Who knows?
 
  • Like
Likes   Reactions: PeroK
phinds said:
I think you mean ignore the first word.

Why would you think that?

If someone ignored the first word in the phrase "science fiction", they would think "science fiction" was "fiction".

If someone ignored the second word in the phrase "science fiction", they would think that "science fiction" was "science".

Obviously this guy is ignoring the second word in the phrase "science fiction" and therefore mistaking science fiction for "science".

String theory combined with eternal inflation predicts a multiverse.

https://www.nikhef.nl/~t58/RMP_Extended.pdf

The "other universes" would be other points on the vast string landscape, and would manifest at low energies as other points in the mathematically allowed parameter space of QFT.

However, you can never "travel to" these other universes. I think this guy is imagining something like the episode of the original Star Trek where Spock had a beard.
 
  • #10
judiefletcher said:
Why would you think that?

If someone ignored the first word in the phrase "science fiction", they would think "science fiction" was "fiction".
We have the same idea on this, just coming at it from opposite ends. I was emphasizing that he is ignoring actual science. Your way of expressing the thought IS better, though.
 
  • #11
Lets think a little about this.

how could we prove that it has happened?

Lets say there is a way to travel, so send someone and come back or we have a way to communicate with them, where it is, we can say is in a parallel universe? What happens if the machine move this "person" to our imagination, we can easily the capacity to imagine a universe, if this is true we have a "universe" inside a "universe".

Lets think there is a "nature", or a set of "rules", imagine that there is 2 sets, when the sets collide construct the rules of our universe, so if there is other set and all of them collide there will be other universes, if the generated universes can affect how the rules collide this would mean a universe can affect to other.

At least for now, the main problem I see in the question is, what do you mean "other universe"?

There is a lot of interpretations, and everyone of them can have a different answer, if we have axis x, y, z of our universe, so other universe can have it too (there should not problem to other universe only have x, y for example), but there is a way to interpret this, there is only one universe with ##x_1, y_1, z_1, x_2, y_2, z_2##, and we just say there is other "universe" because we "don't know" how to move something from "1" to "2".

Please, write what interpretation are you thinking, if you let the definition free hardly you will get a decent answer, every one will write considering their own assumptions about what "other universe" is.
 
  • Skeptical
Likes   Reactions: PeroK
  • #12
judiefletcher said:
Why would you think that?

If someone ignored the first word in the phrase "science fiction", they would think "science fiction" was "fiction".

If someone ignored the second word in the phrase "science fiction", they would think that "science fiction" was "science".
The word is Oxymoron.
I think that any post that includes the phrase "science fiction" should automatically (and in a caring way) be moved to a different (perhaps education style) forum.
 
  • #13
You would run into semantic barriers. Universe is related to the word universal or all-inclusive. It there was an alternate place you could travel to, that means it is part of this universe by definition.
 
  • Like
Likes   Reactions: Vanadium 50
  • #14
The OP has not been back since the day after he posted so I doubt he cares.
 
  • Like
Likes   Reactions: russ_watters
  • #15
Old thread closed for Moderation...
 
  • Like
Likes   Reactions: anorlunda
  • #16
The science fiction parts have been moved into the science fiction forum.

Since ...
phinds said:
The OP has not been back since the day after he posted so I doubt he cares.
... in February, this thread remains closed.
 
  • Like
Likes   Reactions: Bystander

Similar threads

High School What Would You See at the Edge of the Expanding Universe?
  • · Replies 17 ·
Replies
17
Views
2K
High School Can the "creation" of space in the Universe affect the speed of light?
  • · Replies 7 ·
Replies
7
Views
4K
Undergrad Methods for energy harvesting in expanding universe?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad The Boundary of the Observable Universe
  • · Replies 44 ·
2
Replies
44
Views
7K
High School How did expansion take 380,000 years to let light travel freely?
  • · Replies 13 ·
Replies
13
Views
3K
Undergrad Clarification about the size of the Universe
  • · Replies 5 ·
Replies
5
Views
2K
High School Red shifted tired light doubts
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad Questions about the Location of the Big Bang and the Age of the Universe
  • · Replies 8 ·
Replies
8
Views
3K
High School Estimates — True Size of the Universe?
  • · Replies 33 ·
2
Replies
33
Views
8K
High School Can big bang be a part of a loop?
  • · Replies 2 ·
Replies
2
Views
948