/r/universe

Photograph via snooOG

The Universe is a forum for discussion of topics relating to Astronomy, Astrophysics & Cosmology

This subreddit is for all discussions, news stories, and science related to general astronomy, astrophysics, & cosmology.

The Universe is a forum for discussion of topics relating to Astronomy, Astrophysics & Cosmology

This subreddit is for all discussions, news stories, and science related to general astronomy, astrophysics, & cosmology. New to the Universe? Read our subreddit rules before posting! Submission Rules

Submissions should not consist of personal and uninformed pseudo-scientific rambling. We will be a platform for information and news about the study of the physical universe.

Posts must contain a subject or a question about astrophysics in the title — be specific.
We will not accept titles containing only the words "help please" or "space question".

Posts must be relevant.
We like questions, news, published research, course content, educational resources or videos about astronomy, astrophysics, & cosmology.

Comment Rules

Be respectful to other users.
All users are expected to behave with courtesy. Demeaning language, sarcasm, rudeness or hostility towards another user will get your comment removed. Repeat violations will lead to a ban.

Don't answer if you aren't knowledgeable.
Ensure that you have the knowledge required to answer the question at hand. We are not strict on this, but will absolutely not accept assertions of pseudo-science or incoherent / uninformed rambling. Answers should strive to contain an explanation using the logic of science or mathematics. When making assertions, we encourage you to post links to supporting evidence, or use valid reasoning.

Be substantive.
Universe is a serious education/research/industry-based subreddit with a focus on evidence and logic. We do not allow unsubstantiated opinions, low effort one-liner comments, memes, off-topic replies, or pejorative name-calling.

Universe Wiki Resources

Textbook Library
Video Library
Online Courses
Blogs and Lecture Notes
Academic and Professional Resources

Twitter @EntropyCreator Related subreddits

/r/lasercom
/r/satcom
/r/SpaceVideos

List of all science subreddits

/r/askscience
/r/Physics
/r/AskPhysics
/r/PhysicsStudents

/r/universe

27,140 Subscribers

8

The Space Station and the Moon Using precise timing the space platform orbiting the Earth was photographed in front of a partially illuminated gibbous moon.( see comments)

0 Comments
2024/04/17
07:26 UTC

3

Sense of Humour

The universe has a fantastic sense of humour. I said “when I see the number 123, I will know it’s time to do x”

I have seen 124 122 223 it just dances around all the numbers but the one I am looking for

1 Comment
2024/04/17
00:07 UTC

2

Episode 2: Solar Eclipse

0 Comments
2024/04/16
22:10 UTC

0

Is there a solar system where the sun is spinnen around a planet, instead of the planets spinning qround the sun?

I was wondering if this would theoretically be possible, and if there are real life examples of this phenomenon.

6 Comments
2024/04/16
21:22 UTC

4

Question on the Big Crunch

So if eventually we will cease to exist because of the universe imploding and stuff, and then a new big bang would eventually happen, would that be like a second universe has now been made? But since technically time doesn't exist after the Big Crunch, does that mean that technically there has and will be infinite universes? Also would the laws of creation and how things function be the same in the next universe, because if it's completely new, then that realistically it shouldn't really be able to happen right- Idk, lately I've been having trouble with thoughts on afterlife and stuff because of some fears I have but because of that I've looked more into the sciency side of things and am partly interested now as a distraction from my current mental problems.

2 Comments
2024/04/15
03:22 UTC

1

Amazing Facts About The International Space Station ISS

0 Comments
2024/04/14
07:47 UTC

0

What would a video character possibly see if they had a strong microscope that was pointed the simulation?

I've always had this thought experiment that if a character in a video game would have strong microscope and pointed at the boundaries of their simulated world what would they see?

Is it nothing? If they see nothing is that nothing in the true sense of no-thing?

Can they see matter from the physical world outside their simulation?

1 Comment
2024/04/09
12:28 UTC

3

Unveiling the Universe: Top 10 Cosmic Secrets

0 Comments
2024/04/08
17:11 UTC

2

Amazing Facts About The International Space Station ISS

0 Comments
2024/04/08
14:11 UTC

6

Universe's Expansion and Point of Explosion

Has any astrophysicist calculated the point of bigbang By calculating the speed of expansion of stars? What if they shrink the space of stars for 13.8 billion years at the rate of speed which is expanding we can know the point of Big Bang......

3 Comments
2024/04/08
09:04 UTC

20

Jupiter and Saturn giving a show in Italy. Alessandra Masi.

0 Comments
2024/04/08
03:08 UTC

0

Proof of 6, 7, 42

6 == 3 * 2

6 == 3 + 2 + 1

7 == 3 + (2*2)

7 == 3 + (2 + 2)

7 == 3 + (2^2)

6 + 1 is every compiling operation of 3 and 2 $ 2

6 is the first x + (x+1) (()+1) in 3 span

AND ends with + 1

AND it’s a single tack on

IF use +1 to get from 6 to 7, fundamental connection to derived by basic operation must be *

⇒ 42

AND 2 and 4 are endpoints range 2,..., 4

3 + 4 == 7

2 ^ 3 == 8

3 ^ 2 == 9

7, 8, 9

Emerge from manipulation on key intermediates 2, 3, 4

2 and 3 being crucial dimension span adjacents make sense to be reverse ordered exponentials

9 Comments
2024/04/06
17:30 UTC

0

Is space moving us or are we moving space?

We thought the sun was setting on the horizon.

While we are the ones moving around the sun.

We thought planets and stars were crossing the sky.

While we are the ones spining.

In our "Einstein" spacetime construct, we know that time is an illusion. What if space was also an illusion? In other words, motion would also be relative; that is we do not move in space. Instead space moves around us. We do not go from A to B. Instead, we (as particles) have the ability to move space around us and create the illusion of motion from point A to point B. Just like in a movie, the "tape" never moves. It's rather a motion of the picture.

This theory (if even a little bit true) would explain how much (little) science we currently understand. Hence, we have a long way to go in our evolution before we can build a computer as sophisticated as what the brain is capable of; that is computing spacetime to observe motion.

21 Comments
2024/04/05
20:54 UTC

8

If the universe is infinite then the possibility of the inverse is true, with variation included.

Our world view is built of properties we don’t understand yet. Our best estimates are more than anyone would know on Earth. I know the Earth revolves around the sun and the theory that everything will be so cold nothing survives. But is the inverse still true?

22 Comments
2024/04/01
01:24 UTC

3

theory about the big bang

i have a theory that before the big bang was unlimited pure infinite potential and within that potential was the possibility of our universe existing So by nature we had to come into existence because infinite potential contains everything and any possible variation of it

5 Comments
2024/04/01
00:23 UTC

2

Sorry if this is a stupid theoretical physics question, but when the earliest quarks were forming protons & neutrons, did they bond from colliding into each other by chance, or having larger ones draw smaller ones closer through gravity?

I'm not sure as to whether the first protons & neutrons were conceived from the quarks colliding into each other by chance, when it was cool enough for them to form protons & neutrons,

or if they were conceived from larger quarks drawing smaller ones with their slightly larger gravitational field that all elements generate

Thanks in advance!

5 Comments
2024/03/29
23:38 UTC

3

found a pic idek what it is

6 Comments
2024/03/28
23:13 UTC

15

What are the current theories on the origins of the universe?

Hello! I find myself deeply fascinated by the mysteries of the cosmos and am very eager to learn more about the current scientific theories regarding how the universe began. Could you share some insights into the latest hypotheses and ideas that scientists have proposed about the origins of the universe?

15 Comments
2024/03/28
17:15 UTC

5

Did y’all ever think there’s a space somewhere at a distance from the sun where a temp is like 20•, meaning a human could just fly in space wearing scuba diving gear?

Ofc I’m not mentioning facts like pressure that would ofc kill us as well as that the sun’s explosions could move that temp friendly env up to like 400• in 2 sec. But still at some point of time, would be cool to like swim in space.

7 Comments
2024/03/26
19:09 UTC

3

Game Theory: A theory I came up with while studying for my examinations, which ate me up since.

This is a theory I came across while studying Evolution in Biology. I had not slept for around 2-3 days and this may be why I came up with such an absurd theory. I would greatly appreciate if you read the whole thing and let me know about your take on this.

As I was studying Biology, I realized (though I knew), about how perfect life is; from the structure of organisms, functions, different organelles and their functions, the laws of physics, the physical constants because of which our universe exists (it is a known fact that our universe would not exist if there was a discrepancy by even the minutest of values in a physical constant, for example, the gravitational constant). That led me to God, about the Supreme Being who created our universe from the scratch. However, practically speaking, it is very hard to imagine that we are the ONLY living organisms present in the universe, after all, it's infinitely big and constantly expanding at a fast speed than light. So, if God truly made our universe, he MUST be responsible for each an every thing and being, whether or whether not they exist.

After rambling, I came to an absurd checkpoint (one can say); since we have no proof of outer life (technically), we can't prove/disprove anything related to it, since we do not fully understand those concepts or that particular view. Similarly, what makes each and every one of us so sure that there is ONE God and not many? What's telling us or making us believe that God is the Supreme Being, and there are no other Supreme Beings? What if, they have a separate world, which we technically call heaven, where the Supreme Being(s) live(s)?

This particular thought (which I know is absolutely absurd and I will probably get backlash for this), led me to spiral into a chaotic state of mind. We know that we are 3-Dimensional (will refer to Dimensional as D from now) creatures, who observe our immediate surroundings in 2D. We can control the length, breadth and height of a particular object we create right. There are many scientists around the world who strongly believe that Time MAYBE the 4th Dimension, so let us assume that for this particular thread. In theory, we CANNOT control time, but be bound by it forever. This can be taken a step down for further understanding: a 2D object can not control it's height right- this can be seen when we draw anything on a piece of paper, it is BOUND to the 2D surface, and CANNOT have height. Hence, what if God is a 4D Being who can technically control the 4th Dimension, here assumed to be time?

On further thinking/rambling, I started making weirder assumptions. We 3D Beings can code and make a multitude of programs or games or applications. They are bound to a screen (2D) and cannot have height. At the max, they can create visual effects which may make us feel like it has height (for example art or by using shadows). However, it remains true that they are BOUND to a 2D Screen or surface which they CANNOT escape. For example, we all know that video games are one of the most popular sources of entertainment for a huge number of people. There exists many types of games, with many challenges or plots or stories, which the programmer(s) create by coding. So, in reality, we 3D beings are creating something which is BOUND to 2 Dimensions, which WE can CONTROL. Discrepancies or mistakes in code results in bugs in games. Since we are actually coding and making the game, we technically code the actions and mindsets of the protagonists, antagonists, NPCs with fixed dialogues, the world-building (in case of an Open World Game), and so on. This basically makes us, by generalization and absurd comparison, Supreme Beings of the said world we created using code, binding it to a 2D surface/plain. The only catch here is, that those characters we code do NOT have a mind of their own.

Going further down this convoluted, imaginary and twisted rabbit hole, I started correlating shit which technically should not even be discussed under the same topic. Nowadays, Artificial Intelligence (AI) is gaining widespread popularity and use all over the world. What's common is that AI is ALSO coded and made by us, similar to the games we create. These AI models are BOUND to a screen or a 2D surface. However, with the advent of technology and the curiosity of the human brain, we have started implementing AI into 3D mechanical models called robots (I know you all know but for clarity, I do not want to miss anything). The programs we create (AI) are being put in 3D models, which we created, therefore allowing a 2D program to interact with our 3D world. Now there are popularly 3 types of AI theorized/categorized by renowned scientists/programmers across the globe, two of which HAVE self-learning capacity. This means, they have a conscious mind, much like ours, which may or may not develop to be smarter than us humans. It is a KNOWN FACT that this MAY lead to catastrophes (like in the Terminator Franchise) and wide-spread replacement of humans in industries and/or workplaces. If AI is left unchecked and are given self-learning capability and a free mind, our world will be in grave danger. This is the ONLY difference between the games/characters we code and AI: presence of a conscious mind which has the capability to self-learn. Whether or not we apply this to 3D robotic models, AI which has these capabilities will eventually find a way to do so on their own (I do not want to get into that because I'm sure you all can figure that out).

Anyway, what I'm getting at is that, what if we are just a 'game' or a 'source of entertainment' created by 4D beings? Since we can create entire worlds with a story line which may or may not end, using code bound in 2D, the same can happen for us right? The various organelles, perfect physical constants with no discrepancies, a numerous variety of structures with different functions (cellular as well as in species (such as bacteriophages (which was actually THE organism which I thought to be very robot-like which led me to talk shit for so long))), all CAN in theory be replicated in a code (although it's VERY OVERWHELMING). I'm sure you must have heard about Mandela Effect. For those who have not, in short, it's basically having memory of a certain instance (which you are 100% sure of remembering it in a different way) different to what most people have. For further reference, you can find videos on it online so if interested or baffled, please do so. In my particular theory, Mandela Effect can just be termed as bugs in the system the 4D beings have plausibly created. They may or may not be intentional, but certainly CAN be, right? Similarly, the Multiverse Theory with different decisions occurring at every instance, or with different laws of physics, may just be other 'worlds' or 'games' created by OTHER 4D beings? This correlates with the above paragraph where I am skeptical about the existence of ONE 'God' or 'Supreme Being' with no one else of His kind. And what I find interesting is that this might be plausible, for 4D beings ought to be much superior than 3D beings, or is it?

Above I briefly mentioned AI. Again, reiterating what I sad, AI are bound to 2D, which CAN actually enter our 3D world indirectly if left unchecked (specifically those AI which have a self-learning capability and are left unchecked). Also, it is known that AI CAN actually grow more smarter, intelligent and powerful than us human beings if left unchecked. So, what if we humans or on a wider scale, any 3D organism living in our world/universe, can do the same by indirect means if let into the 4D world? I have not actually theorized this OR can grasp this concept of entering into a 4D world, if that is even possible. But, as best as I can explain it simply, is with reference to the movie Interstellar, where it is seen that Cooper can actually access the 3D world not bound by time, as he somehow made way through to the 4D plain as I would like to call it.

Regardless, my mind had given out when I came to the theory of us entering the 4D world. I got burned out, and still am, and can not process or proceed further. I know many, if not all, will not read this through at all, or even to the end, but for those who do, please tell me your take on this, for I am dumbfounded and lost.

7 Comments
2024/03/26
09:11 UTC

1

What if we are collateral damage?

I have a theory.

We know the universe is expending. Therefore, we can assume it had to start from somewhere.

But what if we are collateral damage of the explosion?

What if our universe is collateral damage of another Universe having exploded?

What if the stars around us are the initial damage and that eventually, the heat shock and friction will reach our world?

All explosions eventually burn up

So we can assume our explosion has only just started and that we will eventually burn up or die from having no more heat in the universe because everything around us that could give us warmth is gone.

Just a theory. I’m not a scientist. Just some guy with a theory that has probably been thought of before me.

3 Comments
2024/03/23
19:55 UTC

1

Emergence is a Non-Zero-Sum Game

0 Comments
2024/03/21
10:14 UTC

0

Our brain constructs our reality using a concept we call Time?

Time is the speed of motion of objects. Our brain can only observe objects that move at relatively the same speed. This is what we call our reality.

3 Comments
2024/03/21
07:15 UTC

1

What if the universe is inside a multiverse

HEAR ME OUT ALR. My idea is that the universe is inside of a multiverse made of millions of other universes beyond that it just keeps becoming bigger and bigger with multiverses inside of multiverses until it reach’s this boundary I call the the final stretch the reason so is at this point reality and matter stretches so far that it creates a vortex that destroys the fabric of space and if you attempt to go through it you be slowly striped of every qaurk and soon after even the qaurks will stretch eventually destroying them and making everything -infinite mass bassicly destroying anything that enters it

Go ahead prove me wrong I ain’t no scientist but that’s my idea

4 Comments
2024/03/20
19:22 UTC

9

Please help explain to me how Jupiter and Saturn is 100% gas?

I just don't believe it. i believe it's covered in gas yes. Most planets are but i do think all the planets inn our solar system are made if mass we can stand on.

Now I'm just stating this because I'm having a hard time understanding how we know they are 100% gas and how we got to the conclusion that that is what they are.

Please help me understand.

12 Comments
2024/03/20
18:57 UTC

2

Help me understand

I need to tell Redet about something that has been going on for a long while and I just thought it was me being crazy first I’m 15 I live in ky I don't care if you believe me or not but I can't get sleep at night because every time I close my eyes I get an image more like a 2 second memory but there not mine I get them all the time when my friends family have seen me randomly flinch and jump was because of that but when I zone out I go into someone's memory or something that's going to happen to them in the future I can be zoned out for 3 seconds but for me it has been 10 20 minutes at times and I can just walk around I'm like a viewer sometimes and then sometimes more then anything I am in there eyes I see what they see but I have no control at all the detail is crazy Some of the items, like beds guns tvs doorknob, design of the home or place and it has never been presented to me in. The images are the first time I've seen these items the house place Each image also has a unique stamp on me I feel useless sometimes with what I see but more the last 3 months stuff I seen came and happened to me the same stuff I'm not dreaming because it happens when I'm up but also when I'm sleeping and when I had trouble falling asleep was because I heard voices calling my name. Most of my dreams took place in a apocalyptic future before this stuff started since I was 13 I just feel like I need to tell someone this because of the memorie I seen that's why I need to know if this is real or not it’s getting to me and if I'm going crazy if I try and stop it form happing it doesn't happen I can get memories that are days months in the future and I can also get memories that already happened I don't know what to do anymore i don't thank it's a mental illness because it's too vivid and stuff comes to me then happens 3 days later I also have bad feelings when I enter into certain spaces my room bath room car anyway I've heard footsteps in house are when I'm alone I can't discount every experience as a figment of my imagination because my mom has also had similar experiences with the footsteps and I have them follow me I needed to tell this but I don't thank I'm crazy because they keep coming true that's why I am how I am and why I have been so paranoid checking and counting every person I see because there's other people there I sense them, but don't see them I know this is a lot I'm sorry I sound crazy but it's the truth that's why I can't sleep well I can't find anything online about this stuff so I'm just confused and you probably won't believe me whoever is reading this but there’s just so much that can’t explain I also feel like I’m in a dream in a dream with no escape I never know what’s really and what’s not sometimes I feel like I’m in a coma, waiting to get up please help me readit. Ask questions and I’ll tell you the answer to it and be truthful.

1 Comment
2024/03/19
18:53 UTC

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