They discover something surprising about the expansion of the universe

It may be necessary to rethink the cosmological model, due to a discovery that changes what we knew about the expansion of the universe.

the Expansion of the universe It is one of the many cosmic mysteries. Some hypotheses on this topic even suggest that this growth is just an illusion. But what is happening now does not indicate this controversial trend. On the contrary, it goes back to the beginning, however Conflicts are part of what was known.

The new discovery about Expansion of the universe Presented at the 243rd meeting of the Committee American Astronomical Society, on January 8. In contrast, the article recording the study has already been published in the journal Astrophysical Journal.

After 25 years Two different teams of astrophysicistsHe saw it using telescopes from the Cerro Tololo Inter-American Observatory (CTIO) and Kitt Peak National Observatory. The universe is expanding rapidlyAnother discovery enriches the role of dark matter in matter.

Scientists working on Dark Energy Survey (DES)an international project involving more than 25 institutions and managed by the Fermi National Accelerator Laboratory, was able to get closer to the reason behind… Accelerating expansion of the universe.

The universe is expanding at different speeds

In general, the scientists involved in the research saw this It is possible that dark matter is constantly changing, contrary to what was thought. This would make it necessary to rethink Standard cosmological model.

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“As the universe expands, the density of matter decreases,” he explains in his book cI reported, Rich Krohn, DES Director and Spokesperson. “But if the density of dark energy is constant, this means that the total proportion of dark energy should increase with increasing volume.”

With the Standard cosmological modelwhich is also known as Clean development mechanismThe density of dark energy in the universe is believed to be constant over time and does not weaken as it expands. The new study indicates that this It may not be true.

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Part of the advantage of the submitted work is that this is the first time this has been done Enough distant supernovae have been measured For a detailed analysis of the deceleration phase of the universe, it is explained in launch.

Even with this step, scientists consider that their results are not yet conclusive enough Exclude a possibly more complex model.