“Impossible Solved” –The Galaxy With No Dark Matter

 

Galaxy without Dark Matter

 

“It really is quite uncomfortable. It shouldn’t exist; it shouldn’t be real,” Marla Geha, an astronomer at Yale University , said in 2018 of a small, strange galaxy a small galaxy that seems to contain none of the invisible stuff known as dark matter. “Yet if you look at the data, that’s the conclusion you’re drawn to.” Astronomers have long noticed an invisible elephant in the room — so-called dark matter, which seems heavier than all the visible stars, gas and dust in the cosmos by a ratio of 6-to-1.

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“Strange Glow” –Neutron Stars or Dark Matter Source of Odd Light At Milky Way’s Center?

Milky Way Disk

 

A strange glow coming from the Milky Way’s center was thought to be due to a hidden population of pulsars. But a new look at older research shows that dark matter might still be responsible, perhaps making our galaxy unique.

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“Unknown Dark Object” –Million Times Mass of the Sun Ripped a Hole in the Milky Way

Milky Way Galaxy

 

An enormous “something” appears to have torn a hole in part of the Milky Way’s halo. The “dark substructure” was found via Gaia spacecraft observations—a mission producing the most detailed 3D map of our galaxy—with Harvard’s Ana Bonaca noticing a perturbation in a tidal stream. Bonaca is a leading authority on how the tidal field of the Milky Way galaxy disrupts globular clusters, and what the resulting debris can tell us about the underlying distribution of dark matter.

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“One Trillion Times Age of the Cosmos” –Rarest Thing Ever Detected

 

Cluster Abell 3827

 

“We actually saw this decay happen. It’s the longest, slowest process that has ever been directly observed, and our dark matter detector was sensitive enough to measure it,” said Ethan Brown, an assistant professor of physics at Rensselaer Polytechnic Institute. “It’s an amazing to have witnessed this process, and it says that our detector can measure the rarest thing ever recorded.”

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“Ultralight” –‘Dark Matter Exists Beyond the Standard Model’

 

Dark Matter

 

“Inconveniently, dark matter is “dark” in the sense that it hardly interacts with anything, particularly with light. Apparently, in some scenarios it could have a slight effect on light waves passing through. But other scenarios predict no interactions at all between our world and dark matter, other than those mediated by gravity. This would make its particles very hard to find,” says Sergey Troitsky, chief researcher at the Institute for Nuclear Research of the Russian Academy of Sciences.

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