• Education
    • Higher Education
    • Scholarships & Grants
    • Online Learning
    • School Reforms
    • Research & Innovation
  • Lifestyle
    • Travel
    • Food & Drink
    • Fashion & Beauty
    • Home & Living
    • Relationships & Family
  • Technology & Startups
    • Software & Apps
    • Startup Success Stories
    • Startups & Innovations
    • Tech Regulations
    • Venture Capital
    • Artificial Intelligence
    • Cybersecurity
    • Emerging Technologies
    • Gadgets & Devices
    • Industry Analysis
  • About us
  • Contact
  • Advertise with Us
  • Privacy & Policy
Today Headline
  • Home
  • World News
    • Us & Canada
    • Europe
    • Asia
    • Africa
    • Middle East
  • Politics
    • Elections
    • Political Parties
    • Government Policies
    • International Relations
    • Legislative News
  • Business & Finance
    • Market Trends
    • Stock Market
    • Entrepreneurship
    • Corporate News
    • Economic Policies
  • Science & Environment
    • Space Exploration
    • Climate Change
    • Wildlife & Conservation
    • Environmental Policies
    • Medical Research
  • Health
    • Public Health
    • Mental Health
    • Medical Breakthroughs
    • Fitness & Nutrition
    • Pandemic Updates
  • Sports
    • Football
    • Basketball
    • Tennis
    • Olympics
    • Motorsport
  • Entertainment
    • Movies
    • Music
    • TV & Streaming
    • Celebrity News
    • Awards & Festivals
  • Crime & Justice
    • Court Cases
    • Cybercrime
    • Policing
    • Criminal Investigations
    • Legal Reforms
No Result
View All Result
  • Home
  • World News
    • Us & Canada
    • Europe
    • Asia
    • Africa
    • Middle East
  • Politics
    • Elections
    • Political Parties
    • Government Policies
    • International Relations
    • Legislative News
  • Business & Finance
    • Market Trends
    • Stock Market
    • Entrepreneurship
    • Corporate News
    • Economic Policies
  • Science & Environment
    • Space Exploration
    • Climate Change
    • Wildlife & Conservation
    • Environmental Policies
    • Medical Research
  • Health
    • Public Health
    • Mental Health
    • Medical Breakthroughs
    • Fitness & Nutrition
    • Pandemic Updates
  • Sports
    • Football
    • Basketball
    • Tennis
    • Olympics
    • Motorsport
  • Entertainment
    • Movies
    • Music
    • TV & Streaming
    • Celebrity News
    • Awards & Festivals
  • Crime & Justice
    • Court Cases
    • Cybercrime
    • Policing
    • Criminal Investigations
    • Legal Reforms
No Result
View All Result
Today Headline
No Result
View All Result
Home Science & Environment

Record-Breaking Trove of Stars Seen Billions of Light-Years Away in Cosmic Dragon : ScienceAlert todayheadline

January 8, 2025
in Science & Environment
Reading Time: 4 mins read
A A
0
Ultramassive Black Hole Discovered to Be 33 Billion Times More Massive Than The Sun
3
SHARES
7
VIEWS
Share on FacebookShare on Twitter


There are limits to what we can see across the gulf of space and time separating us from the early Universe. Light that travels across billions of light-years emanates from sources so distant it can be challenging even to see something even as luminous as a galaxy glowing in the darkness.


Human endeavor has now smashed through those limits using JWST – resolving more than 40 individual stars on the outskirts of a galaxy whose light has spent almost 6.5 billion years traversing space-time to reach us.


“This groundbreaking discovery demonstrates, for the first time, that studying large numbers of individual stars in a distant galaxy is possible,” says astrophysicist Fengwu Sun from the University of Arizona.


“While previous studies with the Hubble Space Telescope found around seven stars, we now have the capability to resolve stars that were previously outside of our capability. Importantly, observing more individual stars will also help us better understand dark matter in the lensing plane of these galaxies and stars, which we couldn’t do with only the handful of individual stars observed previously.”


Although stars from distant galaxies are usually too small to see individually, we do see the occasional outlier, thanks to a quirk of space-time described by general relativity.


Around sufficiently large masses with strong gravitational fields, space-time itself curves and warps – like the mat of a trampoline warps under a bowling ball. Any light that travels through this warped space-time can become distorted, replicated, and magnified, an effect known as gravitational lensing.

Diagram illustrating gravitational lensing. (NASA, ESA & L. Calçada)

The Dragon Arc is a smear of light across the sky that resembles a Chinese dragon, with separate images of the same distant spiral galaxy making up its head and tail.


The illusion is caused by the gravitational warping of space surrounding a massive cluster of galaxies called Abell 370, located just 4 billion light-years away. Although the more distant light comes to us as a bit of a jumbled mess, astronomers are able to reverse-engineer the gravitational lensing process to see the background galaxies as they would have looked without the smearing – with the added bonus of magnification.


But that’s not all. In the space between the galaxies in the Abell 370 cluster, a number of isolated stars drift around, alone. Each star is capable of adding an additional lensing effect of its own, a phenomenon known as microlensing.


Gravitational lenses have been used previously to resolve individual stars in the distant Universe. Using the microlensing of rogue intracluster stars, a team led by astronomer Yoshinobu Fudamoto of Chiba University in Japan was able to resolve an unprecedented 44 individual stars in the smeared light of the Dragon Arc.

Individual Stars Resolved Halfway Across The Observable Universe, Inside The 'Dragon Arc'
A Hubble deep image of Abell 370. (NASA, ESA, and J. Lotz and the HFF Team/STScI)

“When we discovered these individual stars, we were actually looking for a background galaxy that is lensing-magnified by the galaxies in this massive cluster,” Sun says.


“But when we processed the data, we realized that there were what appeared to be a lot of individual star points. It was an exciting find because it was the first time we were able to see so many individual stars so far away.”


Armed with this information, the team found that many of the stars in the Dragon Arc are red supergiants – massive, red stars at the end of their lifespans that have puffed up as their fuel runs low. These are cooler, redder stars than those typically resolved across vast intergalactic distances, which tend to be large, bright, hot blue and white giants.


This information tells us just a little bit more about the evolution of galaxies very far from our own. Because red supergiant stars are cooler, they tend to be more difficult to see than the hot ones. JWST’s ability to see red light has given it an edge in finding objects outside the range of other instruments.


Further JWST observations are expected to reveal even more stars hiding in the blurry light of the Dragon Arc, billions of light-years away.

The research has been published in Nature Astronomy.

Previous Post

Fight is on to save Palisades High School as fire spreads onto campus

Next Post

BSP will contest independently in Delhi Polls with full preparation, strength: Mayawati todayheadline

Related Posts

What Is Your Cat Trying to Say? These AI Tools Aim to Decipher Meows todayheadline

June 17, 2025
5

NASA, German Aerospace Center to Expand Artemis Campaign Cooperation

June 17, 2025
5
Next Post
BSP will contest independently in Delhi Polls with full preparation, strength: Mayawati

BSP will contest independently in Delhi Polls with full preparation, strength: Mayawati todayheadline

  • Trending
  • Comments
  • Latest
Family calls for change after B.C. nurse dies by suicide after attacks on the job

Family calls for change after B.C. nurse dies by suicide after attacks on the job

April 2, 2025
Pioneering 3D printing project shares successes

Product reduces TPH levels to non-hazardous status

November 27, 2024

Police ID man who died after Corso Italia fight

December 23, 2024

Hospital Mergers Fail to Deliver Better Care or Lower Costs, Study Finds todayheadline

December 31, 2024
Harris tells supporters 'never give up' and urges peaceful transfer of power

Harris tells supporters ‘never give up’ and urges peaceful transfer of power

0
Des Moines Man Accused Of Shooting Ex-Girlfriend's Mother

Des Moines Man Accused Of Shooting Ex-Girlfriend’s Mother

0

Trump ‘looks forward’ to White House meeting with Biden

0
Catholic voters were critical to Donald Trump’s blowout victory: ‘Harris snubbed us’

Catholic voters were critical to Donald Trump’s blowout victory: ‘Harris snubbed us’

0
A frustrated solar panel technician.

Why Enphase Energy Stock Is Crashing Today todayheadline

June 17, 2025
Exclusive-Unilever proposes Peter ter Kulve as CEO of ice cream spin-off

Exclusive-Unilever proposes Peter ter Kulve as CEO of ice cream spin-off todayheadline

June 17, 2025

Why Letting Go of Control Was the Hardest — and Smartest — Move I Made todayheadline

June 17, 2025

Sri Lanka faces lower remittances, high oil prices over Israel-Iran attack: FM todayheadline

June 17, 2025

Recent News

A frustrated solar panel technician.

Why Enphase Energy Stock Is Crashing Today todayheadline

June 17, 2025
4
Exclusive-Unilever proposes Peter ter Kulve as CEO of ice cream spin-off

Exclusive-Unilever proposes Peter ter Kulve as CEO of ice cream spin-off todayheadline

June 17, 2025
5

Why Letting Go of Control Was the Hardest — and Smartest — Move I Made todayheadline

June 17, 2025
5

Sri Lanka faces lower remittances, high oil prices over Israel-Iran attack: FM todayheadline

June 17, 2025
5

TodayHeadline is a dynamic news website dedicated to delivering up-to-date and comprehensive news coverage from around the globe.

Follow Us

Browse by Category

  • Africa
  • Asia
  • Basketball
  • Business & Finance
  • Climate Change
  • Crime & Justice
  • Cybersecurity
  • Economic Policies
  • Elections
  • Entertainment
  • Entrepreneurship
  • Environmental Policies
  • Europe
  • Football
  • Gadgets & Devices
  • Health
  • Medical Research
  • Mental Health
  • Middle East
  • Motorsport
  • Olympics
  • Politics
  • Public Health
  • Relationships & Family
  • Science & Environment
  • Software & Apps
  • Space Exploration
  • Sports
  • Stock Market
  • Technology & Startups
  • Tennis
  • Travel
  • Uncategorized
  • Us & Canada
  • Wildlife & Conservation
  • World News

Recent News

A frustrated solar panel technician.

Why Enphase Energy Stock Is Crashing Today todayheadline

June 17, 2025
Exclusive-Unilever proposes Peter ter Kulve as CEO of ice cream spin-off

Exclusive-Unilever proposes Peter ter Kulve as CEO of ice cream spin-off todayheadline

June 17, 2025
  • Education
  • Lifestyle
  • Technology & Startups
  • About us
  • Contact
  • Advertise with Us
  • Privacy & Policy

© 2024 Todayheadline.co

Welcome Back!

OR

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • Business & Finance
  • Corporate News
  • Economic Policies
  • Entrepreneurship
  • Market Trends
  • Crime & Justice
  • Court Cases
  • Criminal Investigations
  • Cybercrime
  • Legal Reforms
  • Policing
  • Education
  • Higher Education
  • Online Learning
  • Entertainment
  • Awards & Festivals
  • Celebrity News
  • Movies
  • Music
  • Health
  • Fitness & Nutrition
  • Medical Breakthroughs
  • Mental Health
  • Pandemic Updates
  • Lifestyle
  • Fashion & Beauty
  • Food & Drink
  • Home & Living
  • Politics
  • Elections
  • Government Policies
  • International Relations
  • Legislative News
  • Political Parties
  • Africa
  • Asia
  • Europe
  • Middle East
  • Artificial Intelligence
  • Cybersecurity
  • Emerging Technologies
  • Gadgets & Devices
  • Industry Analysis
  • Basketball
  • Football
  • Motorsport
  • Olympics
  • Climate Change
  • Environmental Policies
  • Medical Research
  • Science & Environment
  • Space Exploration
  • Wildlife & Conservation
  • Sports
  • Tennis
  • Technology & Startups
  • Software & Apps
  • Startup Success Stories
  • Startups & Innovations
  • Tech Regulations
  • Venture Capital
  • Uncategorized
  • World News
  • Us & Canada
  • Public Health
  • Relationships & Family
  • Travel
  • Research & Innovation
  • Scholarships & Grants
  • School Reforms
  • Stock Market
  • TV & Streaming
  • Advertise with Us
  • Privacy & Policy
  • About us
  • Contact

© 2024 Todayheadline.co