ASTRON’s Post

Astronomers have just unveiled two new satellite galaxies of the Milky Way: Sextans II and Virgo III! These discoveries could shed light on dark matter, the mysterious substance making up about 85% of the universe's matter. 🌠🔭 Using the powerful Subaru telescope in Hawaii, scientists have found these faint, distant galaxies, adding to the 60 known dwarf galaxies orbiting our Milky Way. This breakthrough moves us closer to understanding the "lambda cold dark matter model" (ΛCDM), the prevailing cosmological model. The discovery of Sextans II and Virgo III helps address the discrepancy between predicted and observed numbers of satellite galaxies. Some estimates now suggest there may be as many as 500 dwarf galaxies orbiting the Milky Way! Next year, the Vera C. Rubin Observatory in Chile will begin operations, potentially revealing even more hidden galaxies. The universe is full of surprises, and we can't wait to see what's next! 🌌🔭✨ 📅 Read more about this fascinating discovery on techknowlogic https://lnkd.in/gffhB5PH #Astronomy #DarkMatter #MilkyWay #GalaxyDiscovery #SpaceExploration #ScienceNews #Cosmology #SubaruTelescope #VeraCRubinObservatory  

Scientists believe that these galactic winds, going outward from these supermassive black holes, have profound effects due to physical interactions and telltale the effects of supermassive black holes on the evolution of galaxies, something scientists term as coevolution ̵ evolution of black holes and galaxies together. They believe that these physical interactions between black holes and galaxies have played a critical role in the development of our modern universe. Read more on: https://lnkd.in/dcagPwdp

【Classical Cosmology I. Anomalous Redshift for Galaxies in NED-D】 Full article: https://lnkd.in/gwyAQ-uv (Authored by Lorenzo Zaninetti, from University of Turin, Italy.) This work reviews three models for the anomalous #redshift, introduces the NED catalog for galaxies, and reviews the luminosity Schechter function for galaxies and the photometric maximum in the number of galaxies versus redshift with an application to the NED catalog. A fourth mechanism is the attenuation of the light as given by the Beer-Lambert law. The average value of the Hubble constant is therefore derived by processing the galaxies of the NED-D catalog in which the distances are independent of the redshift. #Galaxy_Groups #Clusters #Superclusters

Astronomers have discovered two new satellite galaxies of the Milky Way, which could help us better understand dark matter, which accounts for around 85% of the universe's matter yet remains invisible to us. The discoveries move scientists closer to solving a lingering problem with the standard model of cosmology, the "Lambda cold matter model," which assumes dark matter is composed of particles moving slower than the speed of light. The newly found small gatherings of stars are designated Sextans II and Virgo III, joining the around 60 known dwarf galaxies that swarm around our larger home spiral galaxy at maximum distances of 1.4 million light-years.

via @PerilOfAfrica #bananas #Early #galaxies #Shaped #Study Galaxies in the Early Universe Were Shaped Like Bananas, Study Suggests: By THE NEW YORK TIMES Source link What does a newborn galaxy look like? For the longest time, many astrophysicists and cosmologists have assumed that newborn galaxies would look like the orbs and spidery discs familiar in the modern universe. But according to an analysis of new images from the James Webb Space Telescope, baby […] The post Galaxies in the Early Universe Were Shaped Like Bananas, Study Suggests first appeared on Peril Of Africa.

GALAXY A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. There are about 51 galaxies in the Local Group (see list of nearest galaxies for a complete list), on the order of 100,000 in the Local Supercluster, and an estimated 100 billion in all of the observable universe. Bottom line: The Local Group of galaxies consists of three large galaxies – the Andromeda Galaxy (biggest), our Milky Way (2nd-biggest) and the Triangulum Galaxy (3rd biggest) – along with 50 or so much-smaller dwarf galaxies. How many galaxies are there in the Universe? Recent estimates tell us that there could be as many as two trillion galaxies in the observable Universe. Two trillion galaxies is an estimate. Scientists haven't sat there and counted every single galaxy they've spotted in the known observable Universe Stars are not scattered randomly through space, they are gathered together into vast groups known as galaxies. The Sun belongs to a galaxy called the Milky Way. Astronomers estimate there are about 100 thousand million stars in the Milky Way alone. Outside that, there are millions upon millions of other galaxies also! Galileo Galilei Proof of the Milky Way consisting of many stars came in 1610 when Galileo Galilei used a telescope to study the Milky Way and discovered that it is composed of a huge number of faint stars. Galileo also concluded that the appearance of the Milky Way was due to refraction of the Earth's atmosphere .

From cosmic rays to supermassive black holes - exhilarating discoveries are made possible by new ways of looking at our universe. Find out about the way modern day astrophysicists view the cosmos that would have surely left Galileo Galilei baffled:

What is Dark Matter? In universe minimum 80% things are dark matter. Millions and millions of stars all the things which are visible to us are only 15% to 20% of the matter of this universe. As an astronomer, I would like to be excused because they name some they do not think much. The word dark is present in both dark matter and dark energy and this creates confusion because many people think this is the same thing They are different. The story of the dark matter started in 1930. One swiss astronomer Fritz Zwicky was looking at the Galaxies. Note that the astronomers had come to know about the galaxies in the 1920’s and they realized that the smudge on the sky visible to the eye with a telescope are actually galaxies. This discovery was made in the 1920’s. One Astronomers Vera Rubin started searching that probably dark matter is present in the galaxies and like Fritz Zwicky Vera Rubin was also not taken seriously in the beginning. After sometimes she was taken seriously and now she is called pioneer of the dark matter discovery. Read More : https://lnkd.in/gRiq_-E6