We May Be Moving Through The Universe Faster Than We Thought
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Galactic Velocity Discrepancy: CMB vs. Radio Observations
Discover why recent radio astronomy surveys suggest our galaxy might be moving three times faster through the cosmos than the standard CMB map indicates, revealing a major new cosmological tension.
Short Summary
- Scientists detected compelling evidence (5.4 sigma) of a "Radio Dipole Anomaly," suggesting current galactic speed estimates are significantly underestimated.
- This anomaly stems from significant discrepancies when comparing the established Cosmic Microwave Background (CMB) velocity baseline against radio source counts.
- The primary leading explanation is a "Local Bulk Flow," suggesting our galaxy resides in a faster-moving local structure within the Cosmic Web.
This document explores the methodology behind comparing the CMB dipole versus the radio dipole, details the surprising nearly four-fold speed increase suggested by recent surveys, and outlines the potential implications for the standard cosmological model.
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Top Comments (10)
That may explain why it still feels like the weekend and that I can't believe tomorrow is Thanksgiving already. /s
Galactic Patrol is gonna pull us over any moment
"If there's nothing wrong with [my measurements], then there must be something wrong with the universe!" - Doctor Beverly Crusher
The Great Attractor is not nearly the source of sci-fi intrigue that it deserves!
Arriving at nowhere sooner than anticipated so exciting.
Happy thanksgiving everyone and guess what, Black Friday sale! BLACKFRIDAY15 coupon gives you 15% off on all of the merch https://whatdamath.creator-spring.com/
When I was 21 years old I took a pencil and a calculator to the library, got all the astrophysical books the place had, and used their primitive interweb terminal to estimate an average speed of "people on a crystal ball, flying through space"... Using the spin rate of the Earth where I was sitting, plus the orbital vlocity of the planet, velocity of sun through space, plus rotational velocity of our spur in the milky way, plus travel speed of milky way and adding the estimated pangalactic drift rate, I came up with a speed of > 2.57 million miles an hour on average as a ballpark figure for how fast I'm moving. Guess being off by a half a million miles an hour isn't too bad for a stoned kid with nothing better to do. 🤷🏾♂
Frankly, I'd be surprised if we *didn't* find out we're traveling at a different speed than we previously thought. Our sensors only get better, and our understanding continues to improve. But our starting point is just one planet's viewpoint of the universe. To think we figured stuff out flawlessly in under a century of study (with radio telescopes), would be hubris. In time we'll continue to improve our understanding, and I expect the numbers we think we know will continue to shift.
"We have no idea what's happening, but something seems to be happening!" I'd like to hear this line uttered in a science fiction movie or some anime.
the amount of compressed information in your mind is impressive. and you dish it out so nonchalantly
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Top Comments (10)
That may explain why it still feels like the weekend and that I can't believe tomorrow is Thanksgiving already. /s
Galactic Patrol is gonna pull us over any moment
"If there's nothing wrong with [my measurements], then there must be something wrong with the universe!" - Doctor Beverly Crusher
The Great Attractor is not nearly the source of sci-fi intrigue that it deserves!
Arriving at nowhere sooner than anticipated so exciting.
Happy thanksgiving everyone and guess what, Black Friday sale! BLACKFRIDAY15 coupon gives you 15% off on all of the merch https://whatdamath.creator-spring.com/
When I was 21 years old I took a pencil and a calculator to the library, got all the astrophysical books the place had, and used their primitive interweb terminal to estimate an average speed of "people on a crystal ball, flying through space"... Using the spin rate of the Earth where I was sitting, plus the orbital vlocity of the planet, velocity of sun through space, plus rotational velocity of our spur in the milky way, plus travel speed of milky way and adding the estimated pangalactic drift rate, I came up with a speed of > 2.57 million miles an hour on average as a ballpark figure for how fast I'm moving. Guess being off by a half a million miles an hour isn't too bad for a stoned kid with nothing better to do. 🤷🏾♂
Frankly, I'd be surprised if we *didn't* find out we're traveling at a different speed than we previously thought. Our sensors only get better, and our understanding continues to improve. But our starting point is just one planet's viewpoint of the universe. To think we figured stuff out flawlessly in under a century of study (with radio telescopes), would be hubris. In time we'll continue to improve our understanding, and I expect the numbers we think we know will continue to shift.
"We have no idea what's happening, but something seems to be happening!" I'd like to hear this line uttered in a science fiction movie or some anime.
the amount of compressed information in your mind is impressive. and you dish it out so nonchalantly