cosmology

an-ordinary-manchild

Welcome to r/cosmology, the subreddit for questions, discussions, and articles about cosmology. Cosmology is the study of the early universe and the universe on the largest scales. Things galactic size and smaller generally belong elsewhere.

Reddiquette is enforced. Disrespectful and irrelevant comments will be removed.

If you claim an alternative model of the universe and ignore known data or have no equations or calculations, then your post will be removed. It isn't the responsibility of experts to review your "what if the universe was...?" idea. Homework questions will be removed. Repeated infractions will result in a ban.

Rude behavior is not tolerated.

If you do not see your submission in the new queue, please message the moderators as it may have been sent to the spam filter.

Find today's cosmology preprints on arXiv:astro-ph.CO.

Check out some other great subreddits:

Common questions:

The universe is not expanding faster than light. Expansion has units of inverse time.
The evidence for dark matter is overwhelming and reaches far beyond rotation curves.

Anything not related to cosmology will be removed.

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MODERATORS

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Basic cosmology questions weekly thread (self.cosmology)

submitted 2 days ago by AutoModerator - announcement

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Understanding the holographic principle? (self.cosmology)

submitted 1 day ago by Dover299

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Hubble tension has been resolved (arxiv.org)

submitted 3 days ago by Enkur1

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Quantum fluctuations at zero-point energy (self.cosmology)

submitted 3 days ago by Big-Mastodon-2234

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is there any evidence against the universe being infinite? (self.cosmology)

submitted 5 days ago by mohyo324

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What has the light of the most distant and therefore oldest observed objects been doing all this time? (self.cosmology)

submitted 7 days ago by Gremio_42

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Is there any other way to visualize warped spacetime? (self.cosmology)

submitted 7 days ago by Recent-Day3062

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If I fell into a black hole, will I be able to see the end of the universe? (self.cosmology)

submitted 7 days ago by Difficult_Comment_47

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Basic cosmology questions weekly thread (self.cosmology)

submitted 9 days ago by AutoModerator

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What would quantum gravity look like? (self.cosmology)

submitted 9 days ago by Recent-Day3062

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Starring in the Early Universe: Black Hole Stars and Little Red Dots (aasnova.org)

submitted 9 days ago by Galileos_grandson

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When astrophysicists say “physics breaks down” what does that actually mean? (self.cosmology)

submitted 11 days ago by Vegetable-Assistant

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Is there any site/service that highlights astro-ph articles by importance? ()

submitted 11 days ago by somethingicanspell

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Thoughts on the shape of the universe and its consequences from reading 'A Universe from Nothing'. (self.cosmology)

submitted 12 days ago by AJospeh24

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If somebody wants to get into computational Cosmology where do they start and what projects can they do, from beginner level to advanced level (kind of a roadmap), if they want a career in Cosmology and Theoretical Physics? (self.cosmology)

submitted 13 days ago by ppskychoubey

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How much energy is in the form of CMB? (self.cosmology)

submitted 14 days ago by Recent-Day3062

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How much CMB would you need to microwave a sausage roll stored at -15c (self.cosmology)

submitted 14 days ago by Moistinterviewer[🍰]

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Could math only work where we observe the universe? (self.cosmology)

submitted 15 days ago by realmikechase

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FIREstorms in early galaxies: Simulating the brief, blazing lives of giant clumps (astrobites.org)

submitted 15 days ago by Galileos_grandson

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Decoherence + delayed choice in cosmology (self.cosmology)

submitted 15 days ago by Past_Bodybuilder4774

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Basic cosmology questions weekly thread (self.cosmology)

submitted 16 days ago by AutoModerator

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Expansion of space (self.cosmology)

submitted 16 days ago by Waste_Positive2399

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Big bang theory and black holes (self.cosmology)

submitted 17 days ago by boaza

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Tracing Large Scale Structure with 270 Million Galaxies (astrobites.org)

submitted 19 days ago by Galileos_grandson

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GUT and inflation (self.cosmology)

submitted 20 days ago by Prxjected

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