Astronomers Find a Universe With No Dark Elements


Three years ago, Filippo Fraternali and his associates saw 12 galaxies that were miraculously scattered, looking like massive cities and stars. But unlike any other galaxy that ever existed, including our Milky Way galaxy, the galaxies appear to have much black light, which would often cause their galaxies to pull. Scientists chose one galaxy to observe, a slightly smaller galaxy over 250,000 light-years across, and pointed to 27 telescope horns on the New Large Array radio in New Mexico.

After gathering 40 hours of information, they captured the stars and air and confirmed what the original photographs showed: “The black objects we see in this galaxy are many, much smaller than you might expect,” he says. Fraternali, astronomer at Kapteyn Astronomical Institute at the University of Groningen in the Netherlands. If a team or a rival were to discover such galaxies, it would be difficult for scientists to solve them. form a darkness story, the idea of ​​dominating the field for at least 20 years. The fraternali and his team published his findings in December in Monthly Notices of the Royal Astronomical Society.

After years of observing telescopes and computer simulations, scientists have come to think of black objects as hidden objects in the sky; Its “intersections” are microscopic particles that are composed of galaxies, both large and small. But the Fraternal is not the first to see a violation of the law. A few years ago, Pieter van Dokkum, an astronomer in Yale, and his friends he found galaxies similar to Hubble Telescope which also seemed to have nothing in the dark. “These galaxies, which we discovered in 2018, caused a lot of controversy and discussion and subsequent work because they were unpredictable and difficult to explain,” said van Dokkum.

Some of those galaxies were located in densely populated areas, where neighboring giant galaxies regularly flew in, probably to clear away dark objects. In contrast, the Fraternal galaxy is far apart, with no rivals, so its lack of black matter cannot be explained. “It could be very important,” says van Dokkum. “How do you get stars and air in the space without the help of black objects?”

These phenomena are called “mass galaxies.” They are very low: In their abundance, they are few, but they spread over a wide area. Some galaxies are as big as the Milky Way galaxy, but they contain only 100 stars — or less. They are close enough to show that they are strong enough to spy on the night sky. Among them are very few, so they are difficult to identify. Now, with the help of excellent telescopes and keen eyesight, they have become quite proficient, ”says Mireia Montes, astronomer at Space Telescope Science Institute in Baltimore and astronomer.

Beginning in the 1960’s, American astronomer Vera Rubin and others first disclosed the possible existence of invisible objects, or “blacks,” as they tested the position of stars in galaxies around the center, indicating that the inner stars it rotates at a different speed than the outside. Based on the rotation of the stars, scientists have calculated the number of galaxies to keep them in orbit around the earth, instead of being thrown into space. For most galaxies, that number is twice as large as that of any extraterrestrial constellation. Scientists solved the problem by comparing the presence of black matter, which does not emit light or light, which must be the mass of the galaxy that binds the galaxy together.

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