#observableuniverse — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #observableuniverse, aggregated by home.social.
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The shortest distance ever discussed in science is the Planck length. It's the shortest distance that can be measured. Our universe's pixel size.
So how small is it? A sphere with a Planck length diameter is to a human egg cell what a human egg is to the observable universe.
#PlanckLength #Universe #ShortestDistance #ObservableUniverse #EggCell
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Explore the mystery of antimatter galaxies beyond our observable universe. Discover theories, cosmic symmetry and what hidden realms could mean for physics and cosmology.
#AntimatterGalaxies #ObservableUniverse #Astrophysics #SpaceExploration #Cosmology #DarkMatter
https://www.scientificworldinfo.com/2026/04/could-antimatter-galaxies-exist-beyond-our-observable-universe.html -
#Astronomy #Supernova #Telescopes #ObservableUniverse
That's astonishing. I always thought a supernova is a one-in-a-century kind of thing. Until I read this blog post by an astronomer:
https://badastronomy.beehiiv.com/p/ban-447-wait-how-many-supernova-explode -
CW: Long-post: Is the fediverse “unwelcoming”?
Whenever I see negative feedback about the #fediverse, it is about:
1. being lonely
2. lacks discoverability
3. reach is poor
4. support for this and that is lacking
5. not welcoming for other people
All of the above, it has to do with what I've described in this quoted post, #ObservableFediverse. Meaning, one was only exposed to a very small part of the fediverse from that person's vantage point.
Let's take for example the #5 item. Is the fediverse not welcoming for certain groups of people, the minorities, the marginalised, those with disabilities, and often discriminated based on origin?
I am an #Asian, a #Filipino - #Chinese to be exact, and I am also #autistic. There is an active community, as well as #groups, for Filipinos and #ActuallyAutistics here in the fediverse network.
Have you seen those? More likely not. Why? “Observable fediverse.”
In #astronomy, an #ObservableUniverse is the part of the huge universe that we can observe from Earth. It is how far our current technology can reach.
It is the same in “observable fediverse”. What you see, what you are interacting with, is only what you currently have access to. Your “observable fediverse” relies on these factors:
1. The users in your instance.
2. The remote users and other servers your instance is aware of.
3. The people you are following (which include groups).
That is your “observable fediverse”.
Since you are not following a user who is following a Filipino, or is a member of an autistic group, there is very little chance you will see content from Filipinos and autistics.
Another reason of disappointment is misunderstanding what the “fediverse/global timeline” is. Here's the thing, it is just the public chatter.
Think of it as visiting a crowded public park. You'll hear all kinds of discussions. There are those that are offensive, and those that are not.
The “federated/global timeline” is also not the entirety of the fediverse. It is only what your instance/server is aware of. If what you most see are unwelcoming content, then don't look at it, or move to a new instance, or ask around. I'm sure your own instance will help you find like-minded individuals and groups.
That's your observable fediverse. The fediverse is not unwelcoming. My guesstimate is, no one account, no one server, have seen more than 1% of the entire fediverse. Just like how we haven't seen more than 1% of the entire universe.
^_^
RE: https://c.im/users/youronlyone/statuses/110256623280436856 -
CW: Universe and Fediverse … an attempt to put some context to how big it is
In #astronomy, the phrase “observable universe” came into use to describe what we can see/observe from our vantage point.
The fediverse has grown so big since its humble beginnings in 2008. My guess is, we are only seeing 0.5% of what it is today. That is your “observable fediverse”, relative from your account.
1. The instances your instance are aware of.
2. The remote users your local instance natives are replying/boosting.
3. The remote users you, yourself is following.
4. And the remote users being boosted/replied to by the remote users you are following.Those are the only ones in your #ObservableFediverse. My observable fediverse is different from your observable fediverse. I am seeing content you are not seeing, and vice versa.
Just like how improving our technologies help us expand our #ObservableUniverse. We need to grow our network to expand our relative observable fediverse.
The only difference between observable universe and observable fediverse is that, we still haven't found life on other planets; but in the fediverse, we already did (see: https://c.im/@youronlyone/110159720528061374).
[[observable universe]] [[observable fediverse]] [[fediverse]] [[mycelial network]] #MycelialNetwork #YourOnlyOne #Fediverse
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CW: Universe and Fediverse … an attempt to put some context to how big it is
In #astronomy, the phrase “observable universe” came into use to describe what we can see/observe from our vantage point.
The fediverse has grown so big since its humble beginnings in 2008. My guess is, we are only seeing 0.5% of what it is today. That is your “observable fediverse”, relative from your account.
1. The instances your instance are aware of.
2. The remote users your local instance natives are replying/boosting.
3. The remote users you, yourself is following.
4. And the remote users being boosted/replied to by the remote users you are following.Those are the only ones in your #ObservableFediverse. My observable fediverse is different from your observable fediverse. I am seeing content you are not seeing, and vice versa.
Just like how improving our technologies help us expand our #ObservableUniverse. We need to grow our network to expand our relative observable fediverse.
The only difference between observable universe and observable fediverse is that, we still haven't found life on other planets; but in the fediverse, we already did (see: https://c.im/@youronlyone/110159720528061374).
[[observable universe]] [[observable fediverse]] [[fediverse]] [[mycelial network]] #MycelialNetwork #YourOnlyOne #Fediverse
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#AlexanderVilenkin - How Big Can the #Cosmos Get?
https://www.youtube.com/watch?v=vQskd-o-t6s&ab_channel=CloserToTruth
#Astronomy #Physics #Astrophysics #Cosmology #PhilosophyOfCosmology #BigBang #BigBangTheory #Expansion #Inflation #EternalInflation #InflationTheory #CosmologicalConstant #Universe #TheUniverse #ObservableUniverse #CloserToTruth #RobertKuhn
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#AlexanderVilenkin - How Big Can the #Cosmos Get?
https://www.youtube.com/watch?v=vQskd-o-t6s&ab_channel=CloserToTruth
#Astronomy #Physics #Astrophysics #Cosmology #PhilosophyOfCosmology #BigBang #BigBangTheory #Expansion #Inflation #EternalInflation #InflationTheory #CosmologicalConstant #Universe #TheUniverse #ObservableUniverse #CloserToTruth #RobertKuhn
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#Fermilab (#DonLincoln) - How Far Is The #EdgeOfTheUniverse ?
https://www.youtube.com/watch?v=u23vZsJbrjE&ab_channel=Fermilab
#Science #Physics #Astrophysics #Distance #Universe #Expansion #ExpandingUniverse #Inflation #InflationTheory #BigBang #BigBangTheory #ObservableUniverse #Horizon #CMB #CosmicMicrowaveBackgroundRadiation #CosmicMicrowaveBackground #GenneralRelativity #GR #BaryonicOscillations #BaryonicSoundOscillations #BaryonicAcousticOscillations #Curvature #SpatialCurvature #SpatialCurvature #PhysicsIsEverything
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#Fermilab (#DonLincoln) - How Far Is The #EdgeOfTheUniverse ?
https://www.youtube.com/watch?v=u23vZsJbrjE&ab_channel=Fermilab
#Science #Physics #Astrophysics #Distance #Universe #Expansion #ExpandingUniverse #Inflation #InflationTheory #BigBang #BigBangTheory #ObservableUniverse #Horizon #CMB #CosmicMicrowaveBackgroundRadiation #CosmicMicrowaveBackground #GenneralRelativity #GR #BaryonicOscillations #BaryonicSoundOscillations #BaryonicAcousticOscillations #Curvature #SpatialCurvature #SpatialCurvature #PhysicsIsEverything
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I may be wrong about the above, maybe when everything outside the supercluster is farther than 130 billion lightyears we will still always have "fossil" light at ever-increasing redshift, almost frozen in time, that shows the observable universe as it was. At some point though the redshift would be too extreme for the signal to be even theoretically observable.
If anyone has seen actual astronomers and cosmologists talk about this I would be delighted to see what they have to say.
#ObservableUniverse #CosmologicalHorizon #ParticleHorizon #HubbleHorizon #CosmicEventHorizon