Started By
Message
Solved: The mystery of the expansion of the universe
Posted on 3/11/20 at 11:35 pm
Posted on 3/11/20 at 11:35 pm
LINK
"The Earth, solar system, the entire Milky Way and the few thousand galaxies closest to us move in a vast "bubble" that is 250 million light years in diameter, where the average density of matter is half as high as for the rest of the universe. This is the hypothesis advanced by a theoretical physicist from the University of Geneva (UNIGE) to solve a conundrum that has been splitting the scientific community for a decade: At what speed is the universe expanding? Until now, at least two independent calculation methods have arrived at two values that are different by about 10% with a deviation that is statistically irreconcilable. This new approach, which is set out in the journal Physics Letters B, erases this divergence without making use of any "new physics."
"The Earth, solar system, the entire Milky Way and the few thousand galaxies closest to us move in a vast "bubble" that is 250 million light years in diameter, where the average density of matter is half as high as for the rest of the universe. This is the hypothesis advanced by a theoretical physicist from the University of Geneva (UNIGE) to solve a conundrum that has been splitting the scientific community for a decade: At what speed is the universe expanding? Until now, at least two independent calculation methods have arrived at two values that are different by about 10% with a deviation that is statistically irreconcilable. This new approach, which is set out in the journal Physics Letters B, erases this divergence without making use of any "new physics."
3
Posted on 3/11/20 at 11:57 pm to Commander Data
That’s the best news I’ve read today. Very cool.
Posted on 3/12/20 at 8:03 am to Commander Data
quote:
By establishing a diameter of 250 million light years for this bubble, the physicist calculated that if the density of matter inside was 50% lower than for the rest of the universe, a new value would be obtained for the Hubble constant, which would then agree with the one obtained using the cosmic microwave background.
Wow, that's fascinating! Assuming multiple bubbles, couldn't this theoretically support a multiverse hypothesis?
Posted on 3/12/20 at 1:42 pm to Commander Data
" It is more difficult, however, to imagine fluctuations in the average density of matter calculated on volumes thousands of times larger than a galaxy."
Good stuff. Thanks for posting!
Good stuff. Thanks for posting!
Page 1 of 1
Popular
Back to top
Follow SECRant for SEC Football News