Sunday, January 17, 2021
Home Lead Story Astrophysicists Unveil Biggest-Ever 3D Map of the Universe

Astrophysicists Unveil Biggest-Ever 3D Map of the Universe

The currently accepted rate, called the "Hubble constant," is 10% lower than the value calculated from the distances between the galaxies closest to us

Astrophysicists on Monday published the largest-ever 3D map of the Universe, the result of an analysis of more than 4 million galaxies and ultra-bright, energy-packed quasars.

The efforts of hundreds of scientists from about 30 institutions worldwide have yielded a “complete story of the expansion of the universe,” said Will Percival of the University of Waterloo in Ontario, Canada.

Follow us on Twitter to get regular updates from us!!

In the project launched more than two decades ago, the researchers made “the most accurate expansion history measurements over the widest-ever range of cosmic time,” he said in a statement.

The map relies on the latest observations of the Sloan Digital Sky Survey (SDSS), titled the “extended Baryon Oscillation Spectroscopic Survey” (eBOSS), with data collected from an optical telescope in New Mexico over six years.

universe
In the project launched more than two decades ago, the researchers made “the most accurate expansion history measurements over the widest-ever range of cosmic time. Pixabay

The infant universe following the big bang is relatively well known through extensive theoretical models and observation of cosmic microwave background — the electromagnetic radiation of the nascent cosmos.

Studies of galaxies and distance measurements also contributed to a better understanding of the Universe’s expansion over billions of years.

Troublesome gap

But Kyle Dawson of the University of Utah, who unveiled the map Monday, said the researchers tackled a “troublesome gap in the middle 11 billion years.”

Through “five years of continuous observations, we have worked to fill in that gap, and we are using that information to provide some of the most substantial advances in cosmology in the last decade,” he said.

Astrophysicist Jean-Paul Kneib of the Swiss Federal Institute of Technology (EPFL) in Lausanne, who initiated eBOSS in 2012, said the goal was to produce “the most complete 3D map of the universe throughout the lifetime of the universe.”

For the first time, the researchers drew on “celestial objects that indicate the distribution of matter in the distant Universe, galaxies that actively form stars and quasars.”

The map shows filaments of matter and voids that more precisely define the structure of the universe since its beginnings when it was only 380,000 years old.

For the part of the map relating to the universe 6 billion years ago, researchers observed the oldest and reddest galaxies.

Universe
An image grab from a handout computer animation made available July 19, 2020, by the Swiss Federal Institute of Technology Lausanne (EPFL) shows a map of the universe in expansion. VOA

For more distant eras, they concentrated on the youngest galaxies — the blue ones. To go back even further, they used quasars, galaxies whose supermassive black hole is extremely luminous.

The map reveals that the expansion of the universe began to accelerate at some point and has since continued to do so.

The researchers said this seems to be because of the presence of dark energy, an invisible element that fits into Albert Einstein’s general theory of relativity but whose origin is not yet understood.

Astrophysicists have known for years that the universe is expanding but has been unable to measure the rate of expansion with precision.

Also Read: Beidou: China’s GPS Rival is Now Functional

Comparisons of the eBOSS observations with previous studies of the early universe have revealed discrepancies in estimates of the rate of expansion.

The currently accepted rate, called the “Hubble constant,” is 10% lower than the value calculated from the distances between the galaxies closest to us. (VOA)

STAY CONNECTED

19,120FansLike
362FollowersFollow
1,773FollowersFollow

Most Popular

Hindu Holy Books: The Four Vedas

BY SHWETA PORWAL The Word Veda means wisdom, knowledge, or vision, and it serves to manifest the language of the gods in human speech. Vedas...

Music That is Happening Today is a Mixture of Good and Bad: Neeraj Shridhar

Singer Neeraj Shridhar, who has given multiple indie pop and Bollywood hits, besides remixes, says that when he remixed songs it was to revive...

Latest Study Suggests Digestive Tract Bacteria Affects Severity of COVID infections in The Body

A new study indicates the kind of bacteria found in a person’s digestive tract can affect the severity of coronavirus infections and the body’s...

This Indian Army Officer Has Developed The Country’s First indigenous 9mm ‘Machine Pistol’

Nagpur-based Indian Army officer Lt Col Prasad Bansod has developed the country's first indigenous 9 mm 'Machine Pistol', an official said here on Saturday. Working...

RBI Remains Committed To Take Further Important Measures To Support Economy

Reserve Bank Governor Shaktikanta Das on Saturday said that the central bank (RBI) remains committed to take any further necessary measures to support the...

Know Why WhatsApp Has Deffered its New Data Privacy Policy!

Facing intense criticism worldwide and now a court case in India, WhatsApp has deferred its new data privacy policy and no one will lose...

Films Are Judged Like Political Essays: Sudhir Mishra

Filmmaker Sudhir Mishra feels films these days are judged like political essays, with no regard to the craft of storytelling. "There is a lack of...

A New Plan To Promote Young Emerging Cricketers By Sonu Sood

Actor Sonu Sood is putting his weight behind an initiative to set up a pan-India platform to promote young emerging cricketers. "I always dreamt of...

Recent Comments