GeekooJun 24, 2025

Want to witness how the universe’s first stars transformed darkness into cosmic dawn? See how radio astronomy is cracking the code. #CosmicDawn #FirstStars #Astronomy

https://geekoo.news/listening-to-the-universes-first-light-new-radio-signals-reveal-ancient-stars/

Listening to the Universe’s First Light: New Radio Signals Reveal Ancient Stars | Geekoo

How can radio waves from the dawn of time reveal secrets about the universe’s very first stars? Discover how astronomers are listening to the earliest cosmic signals—and what it means for our understanding of the cosmos.

Geekoo
ZAH@uniheidelbergMar 5, 2025
The first stars in the universe are exceptional. A new podcast "Reviewing the formation of the universe's first stars", recently published on Scipod at https://www.scipod.global/prof-dr-ralf-klessen-reviewing-the-formation-of-the-universes-first-stars gives a concise overview of the astrophysics of their formation and their influence on the evolution of the universe. This podcast is based on a review article https://www.annualreviews.org/content/journals/10.1146/annurev-astro-071221-053453 by Heidelberg scientists Ralf Klessen and Simon Glover @zah_unihd. #firststars #astrophysics #universe #Heidelberg
Prof. Dr. Ralf Klessen | Reviewing the formation of the universe’s first stars • scipod.global

Before the universe was illuminated by stars, most of its observable matter existed in a roughly even distribution of hydrogen and helium. As these materials collapsed under their own gravity, they would have heated up, initially preventing them from collapsing further to densities high enough for stars to form. As part of a new review, Prof. Dr. Ralf Klessen and Prof. Dr. Simon Glover at Heidelberg University investigate the chemical mechanisms which enabled this primordial gas to cool and fragment to form the universe’s first generation of stars.

scipod.global
ScienceActuallyJul 31, 2024

Dark stars, which are thought to be the first stars in the universe, are predicted to have been made up of almost entirely hydrogen and helium, with less than 0.1% of their mass being dark matter.

#science #sciencefacts #earlyuniverse #firststars #firstlight #darkstar

SubtleBlade ⚔️Jul 30, 2024

Why we might finally be about to see the #FirstStars in the #universe

The first generation of stars changed the course of #CosmicHistory. Now, thanks to the #JamesWebbSpaceTelescope, we have a real chance of spotting them
https://www.newscientist.com/article/mg26335021-300-why-we-might-finally-be-about-to-see-the-first-stars-in-the-universe/

Why we might finally be about to see the first stars in the universe

The first generation of stars changed the course of cosmic history. Now, thanks to the James Webb Space Telescope, we have a real chance of spotting them

New Scientist
CorradoMay 10, 2024

#Astrophysicists discover a novel method for hunting the #firststars

https://phys.org/news/2024-05-astrophysicists-method-stars.html?utm_source=nwletter&utm_medium=email&utm_campaign=daily-nwletter

Astrophysicists discover a novel method for hunting the first stars

A recent study led by the research group of Professor Jane Lixin Dai of the Department of Physics at The University of Hong Kong (HKU) has discovered a novel method for detecting the first-generations stars, known as Population III (Pop III) stars, which have never been directly detected.

Phys.org
CorradoJan 17, 2024

The #NenuFAR #CosmicDawn project has taken an important step in the exploration of the Cosmic Dawn, this key period in our #universe marked by the formation of the #firststars. An upper limit on the amplitude of the #neutralhydrogen fluctuations at 21 cm has been established.

https://phys.org/news/2024-01-cosmic-dawn-nenufar.html?utm_source=nwletter&utm_medium=email&utm_campaign=daily-nwletter

Cosmic dawn observational progress with NenuFAR

The NenuFAR Cosmic Dawn project has taken an important step in the exploration of the Cosmic Dawn, this key period in our universe marked by the formation of the first stars. An upper limit on the amplitude of the neutral hydrogen fluctuations at 21 cm from this distant time was established using the NenuFAR radio telescope. This advance represents a crucial step in our efforts to unravel the mysteries of the first stars formation.

Phys.org
CorradoDec 26, 2023

The #firststars of the #universe, made only of #hydrogen and #helium, about 300 times more massive than the #sun, formed the #heavierelements. A new #study suggests these ancient progenitors created more than just the natural elements.

https://phys.org/news/2023-12-ancient-stars-elements-protons.html?utm_source=nwletter&utm_medium=email&utm_campaign=daily-nwletter

Ancient stars could make elements with atomic masses greater than 260

The first stars of the universe were monstrous beasts. Comprised only of hydrogen and helium, they could be 300 times more massive than the sun. Within them, the first of the heavier elements were formed, then cast off into the cosmos at the end of their short lives. They were the seeds of all the stars and planets we see today. A new study published in Science suggests these ancient progenitors created more than just the natural elements.

Phys.org
Matt WillemsenJun 11, 2023
Has JWST Finally Found the First Stars in the Universe?
In astronomy, elements other than hydrogen and helium are called metals. While that might make your high-school chemistry teacher cringe, it makes sense for astronomers. The two lightest elements were the first to appear in the universe. They are the atomic remnants of the big bang and make up more than 99% of atoms in the universe.
https://www.universetoday.com/161888/has-jwst-finally-found-the-first-stars-in-the-univese/ #JWST #FirstStars #universe
Has JWST Finally Found the First Stars in the Univese?

New observations from JWST hint at pockets of new gas in the halo of more evolved galaxies, where these first-generation stars could still form.

Universe Today
ᴄᴏʀʀᴀᴅᴏMay 20, 2023

#Astronomicalarchaeologists get a peek of the #firststars in the #Universe - #Archaeologists can learn how societies lived by studying what they left behind when they died. #Astronomers are doing much the same thing.

https://bigthink.com/hard-science/first-stars-universe/

Astronomical archaeologists get a peek of the first stars in the Universe

Archaeologists can learn how societies lived by studying what they left behind when they died. Astronomers are doing much the same thing.

Big Think
Matt WillemsenMay 7, 2023
Stellar “Ashes” – Astronomers Discover Traces of Universe’s First Stars
Using ESO’s Very Large Telescope (VLT), researchers have found for the first time the fingerprints left by the explosion of the first stars in the Universe. They detected three distant gas clouds whose chemical composition matches what we expect from the first stellar explosions. These findings bring us one step closer to understanding the nature of the first stars that formed after the Big Bang.
https://scitechdaily.com/stellar-ashes-astronomers-discover-traces-of-universes-first-stars/ #FirstStars #VLT
Stellar “Ashes” – Astronomers Discover Traces of Universe’s First Stars

Using ESO’s Very Large Telescope (VLT), researchers have found for the first time the fingerprints left by the explosion of the first stars in the Universe. They detected three distant gas clouds whose chemical composition matches what we expect from the first stellar explosions. These findings brin

SciTechDaily