* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Tuesday, September 16, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Here’s how NJ’s once-vibrant nightclub scene was born and why it died – Bergen Record

    The Rise and Fall of New Jersey’s Once-Vibrant Nightclub Scene: What Happened?

    The Emmys are back: Viewership soars to highest numbers in 4 years – yahoo.com

    The Emmys Return with a Bang: Viewership Hits a 4-Year High

    From Spinal Tap II to Ed Sheeran : your complete entertainment guide to the week ahead – The Guardian

    Fall’s Hottest Ski Films Are Going on Tour—Here’s the List – yahoo.com

    Experience the Thrill: Fall’s Hottest Ski Films Hit the Road-Don’t Miss the Tour!

    Ryan Reynolds reveals he called a journalist who said mean things about John Candy – yahoo.com

    Ryan Reynolds Reveals the Moment He Stood Up to a Journalist Who Insulted John Candy

    Entertainment Community Fund Launches Program Supporting Entrepreneurs – Playbill

    Entertainment Community Fund Unveils Exciting New Program to Empower Entrepreneurs

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    LELO Releases 2025 Futurist Report: Intergenerational Views on Relationships, Sex, and Technology – PR Newswire

    Exploring the Future: How Different Generations View Relationships, Sex, and Technology in 2025

    Will New Big Technology Engagements Reshape Innodata’s Growth Path? – Yahoo Finance

    Could New Major Tech Partnerships Propel Innodata to Unprecedented Growth?

    Unlocking AI Success: How People, Process, and Technology Form the Ultimate Triangle

    Billion-dollar coffins? New technology could make oceans transparent and Aukus submarines vulnerable – The Guardian

    Billion-Dollar Coffins? How New Technology Could Make Oceans Transparent and Expose Submarines

    What if artificial intelligence is just a “normal” technology? – The Economist

    What if artificial intelligence is just a “normal” technology? – The Economist

    Lincoln Trail College Receives $100,000 Grant from Marathon Petroleum Corporation for Technology Center – wwbl.com

    Lincoln Trail College Lands $100,000 Grant from Marathon Petroleum to Elevate Technology Center

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Here’s how NJ’s once-vibrant nightclub scene was born and why it died – Bergen Record

    The Rise and Fall of New Jersey’s Once-Vibrant Nightclub Scene: What Happened?

    The Emmys are back: Viewership soars to highest numbers in 4 years – yahoo.com

    The Emmys Return with a Bang: Viewership Hits a 4-Year High

    From Spinal Tap II to Ed Sheeran : your complete entertainment guide to the week ahead – The Guardian

    Fall’s Hottest Ski Films Are Going on Tour—Here’s the List – yahoo.com

    Experience the Thrill: Fall’s Hottest Ski Films Hit the Road-Don’t Miss the Tour!

    Ryan Reynolds reveals he called a journalist who said mean things about John Candy – yahoo.com

    Ryan Reynolds Reveals the Moment He Stood Up to a Journalist Who Insulted John Candy

    Entertainment Community Fund Launches Program Supporting Entrepreneurs – Playbill

    Entertainment Community Fund Unveils Exciting New Program to Empower Entrepreneurs

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    LELO Releases 2025 Futurist Report: Intergenerational Views on Relationships, Sex, and Technology – PR Newswire

    Exploring the Future: How Different Generations View Relationships, Sex, and Technology in 2025

    Will New Big Technology Engagements Reshape Innodata’s Growth Path? – Yahoo Finance

    Could New Major Tech Partnerships Propel Innodata to Unprecedented Growth?

    Unlocking AI Success: How People, Process, and Technology Form the Ultimate Triangle

    Billion-dollar coffins? New technology could make oceans transparent and Aukus submarines vulnerable – The Guardian

    Billion-Dollar Coffins? How New Technology Could Make Oceans Transparent and Expose Submarines

    What if artificial intelligence is just a “normal” technology? – The Economist

    What if artificial intelligence is just a “normal” technology? – The Economist

    Lincoln Trail College Receives $100,000 Grant from Marathon Petroleum Corporation for Technology Center – wwbl.com

    Lincoln Trail College Lands $100,000 Grant from Marathon Petroleum to Elevate Technology Center

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

A dynamic form of dark energy may explain strange radiation signal from the early universe

June 20, 2023
in Science
A dynamic form of dark energy may explain strange radiation signal from the early universe
Share on FacebookShare on Twitter

Home

Events

Science & Astronomy

dark energy depicted as wispy clouds of energy and material

The hunt for elusive dark energy could finally be solved thanks to a strange radiation emission from the universe’s earliest stars.
(Image credit: Shutterstock)

Dark energy, the mysterious entity that dominates the energy of the cosmos and appears to be accelerating the expansion of the universe, presents a cosmic conundrum for scientists. 

In short, cosmologists have no idea what dark energy really is. So they are concocting all sorts of possible models, and exploring the observational consequences of those models, in hopes of finding some clue as to what dark energy is and how it works.

Now, new research suggests that we may have already found evidence of an evolving, dynamic kind of dark energy, in the form of the radiation emitted when the first stars appeared in the universe.

Billions of years ago, the universe was much darker than it is today. It took time for the first stars and galaxies to coalesce and appear, and when they did, they completely transformed the cosmos.

Related: The history of the universe from Big Bang to now in 10 steps

Prior to the formation of the first stars, the universe was dominated by a thin fog of neutral hydrogen and helium gas. That gas had formed during the momentous epoch known as recombination, a stage that occurred when our universe was 380,000 years old and had cooled to the point where the hot plasma could become neutral — when electrons could finally bind to nuclei to form the first atoms.

When the first stars ignited, however, their intense radiation ripped through the neutral gas, turning it back into a plasma state. And so cosmologists named the appearance of the first stars the “Cosmic Dawn” and the subsequent dramatic phase change of the universe the “Epoch of Reionization.” These events occurred around a few hundred million years after the Big Bang.

We do not yet have any direct measurements or maps of the cosmological epoch when the first stars and galaxies formed, or of the Epoch of Reionization. The main challenge is that these events occurred an extremely long time ago, so the light from those first stars is incredibly weak.

An open window

But there is another window into the Epoch of Reionization. Neutral hydrogen emits radiation at an extremely specific wavelength: 21 centimeters (8.3 inches). This is not a strong signal at all, but there was a whole lot of neutral hydrogen back in the day. But that radiation was emitted billions of years ago, and in the intervening ages, the universe has expanded to be about 10 times its previous size. That expansion has stretched the wavelength of that 21-cm radiation, and today, it’s now detectable in radio wavelengths.

In 2018, a team of astronomers claimed to have detected the 21-cm signal emitted when the universe was only 230 million years old. But the signal from that radiation was more than twice as strong as theoretical calculations had suggested. Assuming that the observation is valid (which is still a matter of debate, as the result has yet to be replicated by another team), it suggests that something in our understanding of early cosmic history is off.

Most recently, Lu Yin, an astrophysicist at the Asia Pacific Center for Theoretical Physics in South Korea, has suggested a new possibility to explain the strange result.

Dynamics in the dark

Yin’s work, published to the preprint database arXiv, explored a model called interacting Chevallier-Polarski-Linder dark energy, or ICPL. In this model, dark energy is not a fixed constant of the cosmos but a dynamical entity that can change and evolve in time, resulting in changes in the acceleration rate of expansion. But that ability to evolve immediately opens up a question: What controls the way dark energy can change? In response, this model allows for dark energy to interact with dark matter; their behavior is linked, keeping both of them in check as the universe expands.

There are more cosmological observations than the 21-cm signal. So, to start, Yin tuned the ICPL model to fit other observations, especially ones focusing on the recent expansion history of the universe. With a tuned model in hand, Yin then simulated the evolution of the early universe. Yin found that this ICPL model caused stars and galaxies to appear earlier than in standard cosmological models, which made the ICPL model better at accounting for the strange observed 21-cm signal compared with traditional cosmological models.

This is an intriguing result, but not a slam dunk. The 21-cm observations are still in dispute, and there are other possible explanations for the strange signal. Still, this shows how scientists can approach observations like this and continue to push into the frontiers of understanding dark energy and dark matter.

Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at: [email protected].

Breaking space news, the latest updates on rocket launches, skywatching events and more!

Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute in New York City. Paul received his PhD in Physics from the University of Illinois at Urbana-Champaign in 2011, and spent three years at the Paris Institute of Astrophysics, followed by a research fellowship in Trieste, Italy, His research focuses on many diverse topics, from the emptiest regions of the universe to the earliest moments of the Big Bang to the hunt for the first stars. As an “Agent to the Stars,” Paul has passionately engaged the public in science outreach for several years. He is the host of the popular “Ask a Spaceman!” podcast, author of “Your Place in the Universe” and “How to Die in Space” and he frequently appears on TV — including on The Weather Channel, for which he serves as Official Space Specialist.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Space.com – https://www.space.com/dark-energy-strange-dynamic-form-early-universe-signals

Tags: dynamicenergyscience
Previous Post

Deadpool 3 will melt your brain, says Deadpool creator Rob Liefeld

Next Post

Astrophoto of the month: New supernova SN 2023ixf in the Pinwheel Galaxy

3 takeaways from Kash Patel’s tense oversight hearing – PBS

3 Key Moments from Kash Patel’s Intense Oversight Hearing

September 16, 2025
Evanston Ecology Center presents Harvest Fest on Sept. 27 – Evanston RoundTable

Join the Festivities at Evanston Ecology Center’s Harvest Celebration on September 27!

September 16, 2025
NERSC Study Sees Quantum Computing Nearing Practical Use For U.S. Science Within a Decade – The Quantum Insider

NERSC Study Sees Quantum Computing Nearing Practical Use For U.S. Science Within a Decade – The Quantum Insider

September 16, 2025
Issue Publication Information – ACS Publications

Unlock the Latest Insights: Your Ultimate Guide to Issue Publication Details

September 16, 2025
What Kind Of Tequila Is The Absolute Smoothest? – yahoo.com

Discover the Smoothest Tequila You’ll Ever Taste!

September 16, 2025
LELO Releases 2025 Futurist Report: Intergenerational Views on Relationships, Sex, and Technology – PR Newswire

Exploring the Future: How Different Generations View Relationships, Sex, and Technology in 2025

September 16, 2025
Paul Skenes keeps leveling up – Yahoo Sports

Paul Skenes keeps leveling up – Yahoo Sports

September 16, 2025
Hidlay takes World title by force, Haines finishes with silver, Carr fifth in men’s freestyle – USA Wrestling

Hidlay takes World title by force, Haines finishes with silver, Carr fifth in men’s freestyle – USA Wrestling

September 16, 2025
Netanyahu warns Israel may need ‘super-Sparta’ economy amid growing global isolation – Ynetnews

Netanyahu Urges Israel to Forge a ‘Super-Sparta’ Economy to Defy Rising Global Isolation

September 16, 2025
Here’s how NJ’s once-vibrant nightclub scene was born and why it died – Bergen Record

The Rise and Fall of New Jersey’s Once-Vibrant Nightclub Scene: What Happened?

September 16, 2025

Categories

Archives

September 2025
MTWTFSS
1234567
891011121314
15161718192021
22232425262728
2930 
« Aug    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (822)
  • Economy (841)
  • Entertainment (21,720)
  • General (17,071)
  • Health (9,886)
  • Lifestyle (856)
  • News (22,149)
  • People (846)
  • Politics (852)
  • Science (16,053)
  • Sports (21,342)
  • Technology (15,824)
  • World (825)

Recent News

3 takeaways from Kash Patel’s tense oversight hearing – PBS

3 Key Moments from Kash Patel’s Intense Oversight Hearing

September 16, 2025
Evanston Ecology Center presents Harvest Fest on Sept. 27 – Evanston RoundTable

Join the Festivities at Evanston Ecology Center’s Harvest Celebration on September 27!

September 16, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version