universe – आवारा मुसाफिर

First results from DESI make the most precise measurement of our expanding universe

April 5, 2024303 Views

With 5,000 tiny robots in a mountaintop telescope, researchers can look 11 billion years into the past. The light from far-flung objects in space is just now reaching the Dark Energy Spectroscopic Instrument (DESI), enabling us to map our cosmos as it was in its youth and trace its growth to what we see today. Understanding how our universe has evolved is tied to how it ends, and to one of the biggest mysteries in physics: dark energy, the unknown ingredient causing our universe to expand faster and faster. To study dark energy’s effects over the past 11 billion years, DESI has created the largest 3D map of our cosmos ever constructed, with the most precise measurements to date. This is the first time scientists have measured the expansion history of the young universe with a precision...

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Early Universe ran in extreme slow motion!

AWARA MUSAFIR BUREAU

July 3, 2023818 Views

Quasar ‘clocks’ show it was five times slower soon after the Big Bang Scientists have for the first time observed the early universe running in extreme slow motion, unlocking one of the mysteries of Einstein’s expanding universe. Einstein’s general theory of relativity means that we should observe the distant – and hence ancient – universe running much slower than the present day. However, peering back that far in time has proven elusive. Scientists have now cracked that mystery by using quasars as ‘clocks'. “Looking back to a time when the universe was just over a billion years old, we see time appearing to flow five times slower,” said lead author of the study, Professor Geraint Lewis from the School of Physics and Sydney Institute for Astronomy at the University of Sydney. ...

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Scientists release newly accurate map of all the matter in the universe

AWARA MUSAFIR BUREAU

February 2, 2023992 Views

Analysis combines Dark Energy Survey, South Pole Telescope data to better understand the evolution of universe Sometimes to know what the matter is, you have to find it first. When the universe began, matter was flung outward and gradually formed planets, stars and galaxies. By carefully assembling a map of that matter today, scientists can try to understand the forces that shaped the evolution of the universe. A group of scientists, including several with the U.S. Department of Energy’s Fermi National Accelerator Laboratory, have released one of the most precise measurements ever made of how matter is distributed across the universe today. Combining data from two major telescope surveys of the universe, the Dark Energy Survey and the South Pole Telescope, the analysis involve...

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Hubble sheds light on origins of supermassive Black Holes

AWARA MUSAFIR BUREAU

April 18, 2022753 Views

Astronomers have identified a rapidly growing black hole in the early universe that is considered a crucial "missing link" between young star-forming galaxies and the first supermassive black holes. They used data from NASA's Hubble Space Telescope to make this discovery. Until now, the monster, nicknamed GNz7q, had been lurking unnoticed in one of the best-studied areas of the night sky, the Great Observatories Origins Deep Survey-North (GOODS-North) field. Archival Hubble data from Hubble's Advanced Camera for Surveys helped the team determine that GNz7q existed just 750 million years after the big bang. The team obtained evidence that GNz7q is a newly formed black hole. Hubble found a compact source of ultraviolet (UV) and infrared light. This couldn't be caused by emission from ...