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New discoveries about the dark matter of the universe are confusing scientists

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Dark matter, which comprises most of the mass of galaxies, including our own Milky Way, is once again confusing scientists, and new observations of distant galaxies are inconsistent with current understanding of its nature.

Research Published An unexpected discrepancy between the observations was revealed this week Dark matter Theoretical computer simulations of the density of three giant clusters of galaxies containing trillions of stars and how dark matter is distributed.

“Either there is an element in the simulations or we have a fundamentally misconception about the nature of dark matter,” said Priyamvada Natarajan, an astronomer at Yale University and co-author of the study. Published Said Friday in the journal Science.

Dark matter is the invisible glue that holds stars together in a galaxy. It also creates an invisible scarfold that enables galaxies to be clustered. But it has very special advantages. It does not emit, absorb or reflect light, and does not interact with any known particles.

The vast majority of matter in the universe is thought to be about 96 percent dark matter, while ordinary matter – the visible objects that make up stars, planets, and humans – is just 4 percent.

The presence of dark matter is known only by gravity to matter visible in space. It differs from similar nigu and invisible dark energy in that it is considered a space property and contributes to the accelerated expansion of the universe. Dark energy is frightening. Attracts dark matter by gravity.

Includes observations from a new study Hubble Space Telescope Very large telescope at the European Southern Observatory in Chile.

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When light from distant galaxies travels through another galaxy or a cluster, light diverges and bends – the phenomenon of “gravitational lensing” by astrologer and astrologer Mastimo Mestetti of the Observatory.

New observations have shown that the gravitational lensing effects produced by galaxies living within new galaxy clusters are much stronger than current dark matter theory, suggesting that these galaxies contain unexpectedly large dark matter.

“It’s absolutely amazing,” Menegetti said.

© Thomson Reuters 2020


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