Universe could also be youthful than predictions
The standard model of cosmology is the main concept explaining the start and improvement of our universe, however it’s not with out its issues. And now it has yet another. On January 22, 2024, the Chinese language Academy of Sciences said a brand new examine that measured the motions of satellite galaxies round an enormous galaxy group. The scientists’ findings counsel that the universe could also be youthful than the usual mannequin predicts.
The scientists published their peer-reviewed analysis within the journal Nature Astronomy on January 22, 2024.
The usual mannequin of cosmology
The usual mannequin of cosmology says that the universe started with a bang, adopted by the formation of small constructions. These constructions then merged into bigger constructions. Ultimately, huge galaxy clusters shaped web-like constructions, like you’ll be able to see within the simulation above.
Because the universe ages, the massive constructions present much less exercise. Observing the motions of smaller satellite galaxies across the bigger galaxy teams supplies astronomers with helpful perception. By modeling the motions of those satellite galaxies, they will infer how the constructions shaped and glean their ages.
And what they discovered was that the pc fashions and precise observations of the universe don’t match.
Satellite tv for pc galaxy pairs
Scientists from the Chinese language Academy of Sciences used the Sloan Digital Sky Survey (SDSS) to trace the motions of satellite pairs round huge teams of galaxies. They checked out satellites pairs that have been on the other aspect of the large galaxy teams from our line of sight. The researchers analyzed the satellites’ velocity offsets from the central galaxy group. What they discovered was an extra of satellite pairs displaying:
correlated velocity offsets in comparison with pairs displaying anti-correlated velocity offsets.
Workforce chief Qi Guo of the Chinese language Academy of Sciences said:
The surplus of correlated satellite pairs suggests the presence of just lately accreted or infalling satellite galaxies.
The key phrase right here is just lately. New laptop simulations additionally confirmed this extra. However real-life observations didn’t present the identical magnitude of extra. The discrepancy between the simulations and the observations signifies that huge galaxy teams are youthful in the true universe. Creator Qing Gu stated:
Because the age of the large galaxy teams could possibly be carefully associated to the age of the universe, these findings consequently counsel a youthful universe …
The examine reveals, as soon as once more, that the usual mannequin of cosmology remains to be a piece in progress.
Backside line: A brand new examine analyzed the motions of satellite galaxy pairs round a big galaxy group. The outcomes confirmed the universe could also be youthful than the usual mannequin of cosmology predicts.
Via Chinese Academy of Sciences
Read more: The universe is expanding faster than theory predicts
