Astronomers have proposed a new theory that suggests why the universe is expanding at an accelerating rate.
Although it is widely agreed that our universe is expanding, how exactly this process occurs is less well understood. Scientists believe that an elusive substance called “dark energy” is responsible for the expansion.
However, the existence of dark matter itself is only discussed in the context of an expanding universe, leading some to wonder if there are other causes of expansion.
This image shows star-forming regions of ionized hydrogen gas in the Large Magellanic Cloud, a small galaxy adjacent to the Milky Way. (NASA/ESA)
a research has been published In the Journal of Cosmology and Astroparticle Physics, he proposed that the expansion of the universe is caused by merging with smaller “baby” universes.
Jan Ambjorn, lead author of the study, said: told Live Science The study’s main finding is that the accelerating expansion of the universe caused by mysterious dark energy may have a simple and intuitive explanation of merging with a so-called baby universe, and this model fits the data better than the data. There is a possibility of doing so.” Standard cosmological model. ”
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The Standard Cosmological Model is the leading theory of the evolution of the universe, which states that the universe began with the Big Bang, went through an early period of near-exponential inflation, and has continued to expand ever since.
The latest study is by no means the first to propose the idea of multiple universes, but it does provide a mathematical model of how merging with other smaller universes could expand our universe. .
The unusual galaxy NGC 3256 dominates this image from the James Webb Space Telescope. (ESA/Webb, NASA & CSA, L. Arms, A. Evans)
By quantifying the rate of expansion, their calculations matched observations of the universe more closely than standard cosmological models.
The researchers also suggested that early cosmological inflation (the rapid expansion of the universe after the Big Bang) may have been caused by a young universe colliding with a larger one.
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They proposed that after this possible absorption, our now larger universe likely continued to collide with and absorb other “baby” universes.
