* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Saturday, August 2, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Sens. Blackburn, Warnock introduce CREATE Act to provide tax relief to music creators – Yahoo Home

    Sens. Blackburn and Warnock Launch CREATE Act to Deliver Tax Relief for Music Creators

    That’s (Political) Entertainment: When Theatre Meets Politics

    Future Script: How Generative AI Is Changing Collective Bargaining in the Entertainment Industry – Jackson Lewis

    Future Script: How Generative AI Is Transforming Collective Bargaining in Entertainment

    The SBA’s live-entertainment bailout was supposed to end two years ago. We still don’t know how $1.5 billion was spent. – Yahoo Home

    $1.5 Billion Live-Entertainment Bailout: Two Years Later, Where Did the Money Go?

    Wall Street Bets: Caesars, Golden Entertainment, Churchill Downs, GLPI, Boyd – CDC Gaming

    Top Wall Street Bets: Caesars, Golden Entertainment, Churchill Downs, GLPI, and Boyd Take Center Stage

  • 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
    Livonia police use grappler technology to stop drunk driver – ClickOnDetroit | WDIV Local 4

    Livonia Police Deploy Grappler Technology to Safely Stop Drunk Driver

    Emory orthopaedic surgeons use robotic technology to transform knee replacement surgery – Emory News Center

    How Robotic Technology is Revolutionizing Knee Replacement Surgery

    Cognizant Technology Solutions Corp (CTSH) Q2 2025 Earnings Call Highlights: Strong Revenue … – Yahoo.co

    Cognizant Q2 2025 Earnings: Impressive Revenue Growth and Key Takeaways

    Revving Up The U.S. Technology Engine – Forbes

    Revving Up The U.S. Technology Engine – Forbes

    More than just a hockey player – Rochester Institute of Technology Athletics

    Beyond the Ice: The Inspiring Journey of a Remarkable Athlete from Rochester Institute of Technology

    Smart Logistics in Warehousing – From Legacy Protocols to Green IoT – How Technology Is Reshaping the Sustainable Supply Chain – Logistics Viewpoints –

    Smart Logistics in Warehousing – From Legacy Protocols to Green IoT – How Technology Is Reshaping the Sustainable Supply Chain – Logistics Viewpoints –

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Sens. Blackburn, Warnock introduce CREATE Act to provide tax relief to music creators – Yahoo Home

    Sens. Blackburn and Warnock Launch CREATE Act to Deliver Tax Relief for Music Creators

    That’s (Political) Entertainment: When Theatre Meets Politics

    Future Script: How Generative AI Is Changing Collective Bargaining in the Entertainment Industry – Jackson Lewis

    Future Script: How Generative AI Is Transforming Collective Bargaining in Entertainment

    The SBA’s live-entertainment bailout was supposed to end two years ago. We still don’t know how $1.5 billion was spent. – Yahoo Home

    $1.5 Billion Live-Entertainment Bailout: Two Years Later, Where Did the Money Go?

    Wall Street Bets: Caesars, Golden Entertainment, Churchill Downs, GLPI, Boyd – CDC Gaming

    Top Wall Street Bets: Caesars, Golden Entertainment, Churchill Downs, GLPI, and Boyd Take Center Stage

  • 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
    Livonia police use grappler technology to stop drunk driver – ClickOnDetroit | WDIV Local 4

    Livonia Police Deploy Grappler Technology to Safely Stop Drunk Driver

    Emory orthopaedic surgeons use robotic technology to transform knee replacement surgery – Emory News Center

    How Robotic Technology is Revolutionizing Knee Replacement Surgery

    Cognizant Technology Solutions Corp (CTSH) Q2 2025 Earnings Call Highlights: Strong Revenue … – Yahoo.co

    Cognizant Q2 2025 Earnings: Impressive Revenue Growth and Key Takeaways

    Revving Up The U.S. Technology Engine – Forbes

    Revving Up The U.S. Technology Engine – Forbes

    More than just a hockey player – Rochester Institute of Technology Athletics

    Beyond the Ice: The Inspiring Journey of a Remarkable Athlete from Rochester Institute of Technology

    Smart Logistics in Warehousing – From Legacy Protocols to Green IoT – How Technology Is Reshaping the Sustainable Supply Chain – Logistics Viewpoints –

    Smart Logistics in Warehousing – From Legacy Protocols to Green IoT – How Technology Is Reshaping the Sustainable Supply Chain – Logistics Viewpoints –

    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

Our galaxy’s black hole not as sleepy as thought: astronomers

June 25, 2023
in Science
Our galaxy’s black hole not as sleepy as thought: astronomers
Share on FacebookShare on Twitter

The first ever image of Sagittarius A*, the supermassive black hole that sit at the centre of the Milky Way galaxy

The first ever image of Sagittarius A*, the supermassive black hole that sit at the centre of the Milky Way galaxy.

The supermassive black hole lurking at the center of our Milky Way galaxy is not as dormant as had been thought, a new study shows.

The slumbering giant woke up around 200 years ago to gobble up some nearby cosmic objects before going back to sleep, according to the study published in the journal Nature on Wednesday.

NASA’s IXPE space observatory spotted an X-ray echo of this powerful resurgence of activity, the researchers said.

The supermassive black hole Sagittarius A*—abbreviated to Sgr A*—is four million times more massive than the Sun. It sits 27,000 light years from Earth at the center of the Milky Way’s spiral.

Last year astronomers revealed the first-ever image of the black hole—or rather, the glowing ring of gas that surrounds its blackness.

Sgr A* has “always been seen as a dormant black hole,” said Frederic Marin, a researcher at France’s Strasbourg Astronomical Observatory and the study’s first author.

Most supermassive black holes squatting at the middle of their galaxies go dormant after swallowing up all the nearby matter.

“Imagine a bear going into hibernation after devouring everything around it,” Marin told AFP.

But the international team of researchers discovered that at around the end of the 19th century, Sgr A* came out of its slumber and consumed any gas and dust unlucky enough to be within its reach.

The feeding frenzy lasted from several months to a year, before the beast went back into hibernation.

The echo emitted during the Sgr A* flare (located outside the image) sweeps out a circle across the image of the Galactic center. The luminosity of the sources of radiation (or of the echo, for IXPE) is converted into an audio spectrum, 51 octaves below the true frequencies (52 octaves for the echo). Credit: NASA/CXC/SAO/IXPE

Million times brighter

When it was active, the black hole was “at least a million times brighter than it is today,” Marin said.

Its awakening was noticable because nearby galactic molecular clouds started giving off vastly more X-ray light.

The surge in X-ray light was as “if a single glow-worm hidden in a forest suddenly became as bright as the Sun,” French research agency CNRS said in a statement.

Astronomers using NASA’s IXPE (Imaging X-ray Polarimetry Explorer) space observatory managed to track the X-ray light and found that it pointed straight back at Sgr A*.

The black hole “emitted an echo of its past activity, which we managed to observe for the first time,” Marin said.

The pull of gravity from black holes is so intense that nothing can escape, including light.

But when matter is sucked beyond the black hole’s final boundary, known as the event horizon, it emits a massive amount of heat and light before disappearing into the darkness.

Exactly what caused Sgr A* to briefly emerge from its dormant state remains unclear. Could a star or cloud of gas and dust have ventured too close?

The astronomers hope that further observations from the IXPE observatory will help them better understand what happened—and perhaps reveal more about the origin of supermassive black holes, which remains shrouded in mystery.

More information:
Frédéric Marin et al, X-ray polarization evidence for a 200 years-old flare of Sgr A*, Nature (2023). DOI: 10.1038/s41586-023-06064-x. www.nature.com/articles/s41586-023-06064-x. On arXiv: arxiv.org/abs/2304.06967

© 2023 AFP

Citation:
Our galaxy’s black hole not as sleepy as thought: astronomers (2023, June 24)
retrieved 24 June 2023
from https://phys.org/news/2023-06-galaxy-black-hole-sleepy-thought.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Phys.org – https://phys.org/news/2023-06-galaxy-black-hole-sleepy-thought.html

Tags: blackgalaxy'sscience
Previous Post

Air quality advisory issued for Ottawa; smog warning for Gatineau

Next Post

Hurricanes push heat deeper into the ocean than scientists realized, boosting long-term ocean warming

Livonia police use grappler technology to stop drunk driver – ClickOnDetroit | WDIV Local 4

Livonia Police Deploy Grappler Technology to Safely Stop Drunk Driver

August 2, 2025
New NIL guidance from College Sports Commission softens stance on collective payments to athletes – CBS Sports

New NIL guidance from College Sports Commission softens stance on collective payments to athletes – CBS Sports

August 2, 2025
Foraging strategy and tree structure as drivers of arboreality and suspensory behaviour in savannah-dwelling chimpanzees – Frontiers

Foraging strategy and tree structure as drivers of arboreality and suspensory behaviour in savannah-dwelling chimpanzees – Frontiers

August 2, 2025
EPA attacks climate science. Here are the facts. – E&E News by POLITICO

EPA Questions Climate Science: Key Insights You Shouldn’t Miss

August 2, 2025
6 science-backed strategies to improve your memory – National Geographic

6 Proven Science-Backed Strategies to Boost Your Memory

August 2, 2025
Trying to keep your brain young? A big new study finds these lifestyle changes help – NPR

Trying to keep your brain young? A big new study finds these lifestyle changes help – NPR

August 2, 2025
2025 World Junior Summer Showcase: 3 things learned on Day 5 – NHL.com

3 Must-Know Highlights from Day 5 of the 2025 World Junior Summer Showcase

August 2, 2025
Economic Reality Bites Trump and His Protectionist Trade Policies – The New Yorker

How Trump’s Protectionist Trade Policies Ended Up Hurting the Global Economy

August 2, 2025
Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

August 2, 2025
President Trump Delivers Remarks on Making Health Technology Great Again – The White House (.gov)

President Trump Delivers Remarks on Making Health Technology Great Again – The White House (.gov)

August 2, 2025

Categories

Archives

August 2025
MTWTFSS
 123
45678910
11121314151617
18192021222324
25262728293031
« Jul    
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 (750)
  • Economy (775)
  • Entertainment (21,653)
  • General (16,243)
  • Health (9,812)
  • Lifestyle (783)
  • News (22,149)
  • People (776)
  • Politics (784)
  • Science (15,988)
  • Sports (21,271)
  • Technology (15,753)
  • World (758)

Recent News

Livonia police use grappler technology to stop drunk driver – ClickOnDetroit | WDIV Local 4

Livonia Police Deploy Grappler Technology to Safely Stop Drunk Driver

August 2, 2025
New NIL guidance from College Sports Commission softens stance on collective payments to athletes – CBS Sports

New NIL guidance from College Sports Commission softens stance on collective payments to athletes – CBS Sports

August 2, 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