Reposted by Carlos Glie
BONUS
Tiny jargon cheat-sheet:
"Virialization" ≈ gravity + motion finding balance
"Accelerated virial heating via hot gas" = early super-hot gas from gravitational shocks (think: falling gas slamming & heating up fast)
Anything still fuzzy? Just ask!
Tiny jargon cheat-sheet:
"Virialization" ≈ gravity + motion finding balance
"Accelerated virial heating via hot gas" = early super-hot gas from gravitational shocks (think: falling gas slamming & heating up fast)
Anything still fuzzy? Just ask!
February 14, 2026 at 6:18 PM
BONUS
Tiny jargon cheat-sheet:
"Virialization" ≈ gravity + motion finding balance
"Accelerated virial heating via hot gas" = early super-hot gas from gravitational shocks (think: falling gas slamming & heating up fast)
Anything still fuzzy? Just ask!
Tiny jargon cheat-sheet:
"Virialization" ≈ gravity + motion finding balance
"Accelerated virial heating via hot gas" = early super-hot gas from gravitational shocks (think: falling gas slamming & heating up fast)
Anything still fuzzy? Just ask!
Reposted by Carlos Glie
References
Paper: www.nature.com/articles/s41...
Press release: chandra.harvard.edu/press/26_rel...
Image credits for that stunning composite:
X-ray: NASA/CXC/CfA/Á Bogdán
Infrared: NASA/ESA/CSA/STScI
Processing: NASA/CXC/SAO/P. Edmonds and L. Frattare
10/10
Paper: www.nature.com/articles/s41...
Press release: chandra.harvard.edu/press/26_rel...
Image credits for that stunning composite:
X-ray: NASA/CXC/CfA/Á Bogdán
Infrared: NASA/ESA/CSA/STScI
Processing: NASA/CXC/SAO/P. Edmonds and L. Frattare
10/10
An X-ray-emitting protocluster at z ≈ 5.7 reveals rapid structure growth - Nature
Discovery of a protocluster at z = 5.68, merely one billion years after the Big Bang, suggests that large-scale structure must have formed more rapidly in some regions of the early universe than previ...
www.nature.com
February 14, 2026 at 6:18 PM
References
Paper: www.nature.com/articles/s41...
Press release: chandra.harvard.edu/press/26_rel...
Image credits for that stunning composite:
X-ray: NASA/CXC/CfA/Á Bogdán
Infrared: NASA/ESA/CSA/STScI
Processing: NASA/CXC/SAO/P. Edmonds and L. Frattare
10/10
Paper: www.nature.com/articles/s41...
Press release: chandra.harvard.edu/press/26_rel...
Image credits for that stunning composite:
X-ray: NASA/CXC/CfA/Á Bogdán
Infrared: NASA/ESA/CSA/STScI
Processing: NASA/CXC/SAO/P. Edmonds and L. Frattare
10/10
Reposted by Carlos Glie
And the picture?
Absolute stunner.
JWST’s infrared view gives us a sea of golden and white galaxies scattered across deep black space, while Chandra overlays a glowing neon-blue cloud right in the middle—that’s the hot intracluster gas (i.e. million-degree X-ray plasma in galaxy clusters).
8/10
Absolute stunner.
JWST’s infrared view gives us a sea of golden and white galaxies scattered across deep black space, while Chandra overlays a glowing neon-blue cloud right in the middle—that’s the hot intracluster gas (i.e. million-degree X-ray plasma in galaxy clusters).
8/10
February 14, 2026 at 6:18 PM
And the picture?
Absolute stunner.
JWST’s infrared view gives us a sea of golden and white galaxies scattered across deep black space, while Chandra overlays a glowing neon-blue cloud right in the middle—that’s the hot intracluster gas (i.e. million-degree X-ray plasma in galaxy clusters).
8/10
Absolute stunner.
JWST’s infrared view gives us a sea of golden and white galaxies scattered across deep black space, while Chandra overlays a glowing neon-blue cloud right in the middle—that’s the hot intracluster gas (i.e. million-degree X-ray plasma in galaxy clusters).
8/10
Reposted by Carlos Glie
This echoes the “too-mature-too-soon” galaxies and black holes JWST has already shown us.
Now we have direct proof of accelerated virial heating via hot gas.
As lead author Ákos Bogdán put it: “The universe was in a huge hurry to grow up.”
7/10
Now we have direct proof of accelerated virial heating via hot gas.
As lead author Ákos Bogdán put it: “The universe was in a huge hurry to grow up.”
7/10
February 14, 2026 at 6:18 PM
This echoes the “too-mature-too-soon” galaxies and black holes JWST has already shown us.
Now we have direct proof of accelerated virial heating via hot gas.
As lead author Ákos Bogdán put it: “The universe was in a huge hurry to grow up.”
7/10
Now we have direct proof of accelerated virial heating via hot gas.
As lead author Ákos Bogdán put it: “The universe was in a huge hurry to grow up.”
7/10
Reposted by Carlos Glie
This is a big deal because it’s forcing a serious rethink of how large-scale structure formed.
The early universe wasn’t perfectly uniform: in certain lucky patches, matter clumped together at breakneck speed.
6/10
The early universe wasn’t perfectly uniform: in certain lucky patches, matter clumped together at breakneck speed.
6/10
February 14, 2026 at 6:18 PM
This is a big deal because it’s forcing a serious rethink of how large-scale structure formed.
The early universe wasn’t perfectly uniform: in certain lucky patches, matter clumped together at breakneck speed.
6/10
The early universe wasn’t perfectly uniform: in certain lucky patches, matter clumped together at breakneck speed.
6/10
Reposted by Carlos Glie
...finding something this massive in such a tiny survey volume (the JADES field) is extremely unlikely—probabilities dip to something like 2×10⁻⁷.
That screams the universe grew up faster in some places than we expected, echoing those surprisingly bright early galaxies JWST keeps turning up.
5/10
That screams the universe grew up faster in some places than we expected, echoing those surprisingly bright early galaxies JWST keeps turning up.
5/10
February 14, 2026 at 6:18 PM
...finding something this massive in such a tiny survey volume (the JADES field) is extremely unlikely—probabilities dip to something like 2×10⁻⁷.
That screams the universe grew up faster in some places than we expected, echoing those surprisingly bright early galaxies JWST keeps turning up.
5/10
That screams the universe grew up faster in some places than we expected, echoing those surprisingly bright early galaxies JWST keeps turning up.
5/10
Reposted by Carlos Glie
The details, explained simply: the total mass is roughly 20 trillion times the Sun’s—mind-blowing scale.
The gas shines in X-rays bc it’s being slammed and heated by gravitational shocks, clear evidence that collapse and virialization are already underway.
Standard cosmological models say...
4/10
The gas shines in X-rays bc it’s being slammed and heated by gravitational shocks, clear evidence that collapse and virialization are already underway.
Standard cosmological models say...
4/10
February 14, 2026 at 6:18 PM
The details, explained simply: the total mass is roughly 20 trillion times the Sun’s—mind-blowing scale.
The gas shines in X-rays bc it’s being slammed and heated by gravitational shocks, clear evidence that collapse and virialization are already underway.
Standard cosmological models say...
4/10
The gas shines in X-rays bc it’s being slammed and heated by gravitational shocks, clear evidence that collapse and virialization are already underway.
Standard cosmological models say...
4/10
Reposted by Carlos Glie
JADES-ID1? It’s sitting at z ≈ 5.7, only ~1 billion years post-Big Bang.
JWST counted 66 galaxies crammed together; Chandra caught the million-degree gas glowing in X-rays.
It’s like finding a full-grown oak tree in a nursery full of seedlings.
3/10
JWST counted 66 galaxies crammed together; Chandra caught the million-degree gas glowing in X-rays.
It’s like finding a full-grown oak tree in a nursery full of seedlings.
3/10
February 14, 2026 at 6:18 PM
JADES-ID1? It’s sitting at z ≈ 5.7, only ~1 billion years post-Big Bang.
JWST counted 66 galaxies crammed together; Chandra caught the million-degree gas glowing in X-rays.
It’s like finding a full-grown oak tree in a nursery full of seedlings.
3/10
JWST counted 66 galaxies crammed together; Chandra caught the million-degree gas glowing in X-rays.
It’s like finding a full-grown oak tree in a nursery full of seedlings.
3/10
Reposted by Carlos Glie
Quick primer: a “protocluster” is basically the seed of one of those monster galaxy clusters we see today—hundreds or thousands of galaxies pulled together by gravity, swimming in super-hot gas. We used to think these giants took their time, assembling around 2–3 billion yrs after the Big Bang. 2/10
February 14, 2026 at 6:18 PM
Quick primer: a “protocluster” is basically the seed of one of those monster galaxy clusters we see today—hundreds or thousands of galaxies pulled together by gravity, swimming in super-hot gas. We used to think these giants took their time, assembling around 2–3 billion yrs after the Big Bang. 2/10
Reposted by Carlos Glie
🧵
Here comes a jaw-dropping discovery: the most distant confirmed protocluster ever seen with X-rays! 🔭 ⚛️
Using #JWST & #Chandra together, astronomers spotted JADES-ID1—a massive structure in the making that’s forcing us to rethink how fast the cosmos grew up. 🧪
#cosmology #space #astronomy 1/10
Here comes a jaw-dropping discovery: the most distant confirmed protocluster ever seen with X-rays! 🔭 ⚛️
Using #JWST & #Chandra together, astronomers spotted JADES-ID1—a massive structure in the making that’s forcing us to rethink how fast the cosmos grew up. 🧪
#cosmology #space #astronomy 1/10
February 14, 2026 at 6:18 PM
🧵
Here comes a jaw-dropping discovery: the most distant confirmed protocluster ever seen with X-rays! 🔭 ⚛️
Using #JWST & #Chandra together, astronomers spotted JADES-ID1—a massive structure in the making that’s forcing us to rethink how fast the cosmos grew up. 🧪
#cosmology #space #astronomy 1/10
Here comes a jaw-dropping discovery: the most distant confirmed protocluster ever seen with X-rays! 🔭 ⚛️
Using #JWST & #Chandra together, astronomers spotted JADES-ID1—a massive structure in the making that’s forcing us to rethink how fast the cosmos grew up. 🧪
#cosmology #space #astronomy 1/10
Reposted by Carlos Glie
...very dense, opaque clouds of gas & dust, and potential sites for new stars' formation.
The looping filaments are thought to be shaped by powerful stellar winds from massive stars embedded in the nebula.
Image by S. Mazlin, J. Harvey, R. Gilbert, & D. Verschatse (SSRO/PROMPT/UNC)
4/4
The looping filaments are thought to be shaped by powerful stellar winds from massive stars embedded in the nebula.
Image by S. Mazlin, J. Harvey, R. Gilbert, & D. Verschatse (SSRO/PROMPT/UNC)
4/4
February 12, 2026 at 10:48 PM
...very dense, opaque clouds of gas & dust, and potential sites for new stars' formation.
The looping filaments are thought to be shaped by powerful stellar winds from massive stars embedded in the nebula.
Image by S. Mazlin, J. Harvey, R. Gilbert, & D. Verschatse (SSRO/PROMPT/UNC)
4/4
The looping filaments are thought to be shaped by powerful stellar winds from massive stars embedded in the nebula.
Image by S. Mazlin, J. Harvey, R. Gilbert, & D. Verschatse (SSRO/PROMPT/UNC)
4/4
Reposted by Carlos Glie
...in the end stages of formation.
PAHs (or polycyclic aromatic hydrocarbons) are complex carbon molecules, thought to be created in the cooling gas of star forming regions.
Paper➡️ ui.adsabs.harvard.edu/abs/2006A%26...
NGC 3576 also contains little dark nebulae, known as Bok Globules: ...
3/4
PAHs (or polycyclic aromatic hydrocarbons) are complex carbon molecules, thought to be created in the cooling gas of star forming regions.
Paper➡️ ui.adsabs.harvard.edu/abs/2006A%26...
NGC 3576 also contains little dark nebulae, known as Bok Globules: ...
3/4
L-band (3.5 μm) IR-excess in massive star formation. II. RCW 57/NGC 3576
Context: .We present a JHKsL survey of the massive star forming region RCW 57 (NGC 3576) based on L-band data at 3.5 μm taken with SPIREX (South Pole Infrared Explorer), and 2MASS JHKs data at 1.25-2....
ui.adsabs.harvard.edu
February 12, 2026 at 10:48 PM
...in the end stages of formation.
PAHs (or polycyclic aromatic hydrocarbons) are complex carbon molecules, thought to be created in the cooling gas of star forming regions.
Paper➡️ ui.adsabs.harvard.edu/abs/2006A%26...
NGC 3576 also contains little dark nebulae, known as Bok Globules: ...
3/4
PAHs (or polycyclic aromatic hydrocarbons) are complex carbon molecules, thought to be created in the cooling gas of star forming regions.
Paper➡️ ui.adsabs.harvard.edu/abs/2006A%26...
NGC 3576 also contains little dark nebulae, known as Bok Globules: ...
3/4
Reposted by Carlos Glie
The name was suggested by S. Mazlin, a member of SSRO.
Located some 9000 ly away in the star forming region called RCW 57, this complex nebula is 100 ly across.
A study of NGC 3576 reports the detection of diffuse PAHs emission throughout RCW 57 and of at least 33 massive stars...
2/4
Located some 9000 ly away in the star forming region called RCW 57, this complex nebula is 100 ly across.
A study of NGC 3576 reports the detection of diffuse PAHs emission throughout RCW 57 and of at least 33 massive stars...
2/4
February 12, 2026 at 10:48 PM
The name was suggested by S. Mazlin, a member of SSRO.
Located some 9000 ly away in the star forming region called RCW 57, this complex nebula is 100 ly across.
A study of NGC 3576 reports the detection of diffuse PAHs emission throughout RCW 57 and of at least 33 massive stars...
2/4
Located some 9000 ly away in the star forming region called RCW 57, this complex nebula is 100 ly across.
A study of NGC 3576 reports the detection of diffuse PAHs emission throughout RCW 57 and of at least 33 massive stars...
2/4
Reposted by Carlos Glie
🧵
This fantastic image shows NGC 3576, an emission nebula in the Sagittarius arm of our galaxy, dubbed 'The Statue of Liberty Nebula' because of the peculiar shape of the nebulous object in the center.
➡️ apod.nasa.gov/apod/ap16092...
🔭 🧪 ⚛️ #astronomy #space #universe #galactic
1/4
This fantastic image shows NGC 3576, an emission nebula in the Sagittarius arm of our galaxy, dubbed 'The Statue of Liberty Nebula' because of the peculiar shape of the nebulous object in the center.
➡️ apod.nasa.gov/apod/ap16092...
🔭 🧪 ⚛️ #astronomy #space #universe #galactic
1/4
February 12, 2026 at 10:48 PM
🧵
This fantastic image shows NGC 3576, an emission nebula in the Sagittarius arm of our galaxy, dubbed 'The Statue of Liberty Nebula' because of the peculiar shape of the nebulous object in the center.
➡️ apod.nasa.gov/apod/ap16092...
🔭 🧪 ⚛️ #astronomy #space #universe #galactic
1/4
This fantastic image shows NGC 3576, an emission nebula in the Sagittarius arm of our galaxy, dubbed 'The Statue of Liberty Nebula' because of the peculiar shape of the nebulous object in the center.
➡️ apod.nasa.gov/apod/ap16092...
🔭 🧪 ⚛️ #astronomy #space #universe #galactic
1/4
Reposted by Carlos Glie
9/9
It's mind-blowing how a chain of telescopes opened a window into the distant past.
NIRCam image (in the first post) by NASA, ESA, CSA, STScI, Andrew Levan (Radboud University); image processing by Alyssa Pagan (STScI).
It's mind-blowing how a chain of telescopes opened a window into the distant past.
NIRCam image (in the first post) by NASA, ESA, CSA, STScI, Andrew Levan (Radboud University); image processing by Alyssa Pagan (STScI).
February 10, 2026 at 7:09 PM
9/9
It's mind-blowing how a chain of telescopes opened a window into the distant past.
NIRCam image (in the first post) by NASA, ESA, CSA, STScI, Andrew Levan (Radboud University); image processing by Alyssa Pagan (STScI).
It's mind-blowing how a chain of telescopes opened a window into the distant past.
NIRCam image (in the first post) by NASA, ESA, CSA, STScI, Andrew Levan (Radboud University); image processing by Alyssa Pagan (STScI).
Reposted by Carlos Glie
8/9
The second paper is "SVOM GRB 250314A at z ≃ 7.3: an exploding star in the era of reionization" by B. Cordier et al., also appearing in A&A Letters (2025).
➡️ www.aanda.org/articles/aa/...
It discusses the SVOM detection and the reionization-era setting.
The second paper is "SVOM GRB 250314A at z ≃ 7.3: an exploding star in the era of reionization" by B. Cordier et al., also appearing in A&A Letters (2025).
➡️ www.aanda.org/articles/aa/...
It discusses the SVOM detection and the reionization-era setting.
SVOM GRB 250314A at z ≃ 7.3: An exploding star in the era of re-ionization | Astronomy & Astrophysics (A&A)
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
www.aanda.org
February 10, 2026 at 7:09 PM
8/9
The second paper is "SVOM GRB 250314A at z ≃ 7.3: an exploding star in the era of reionization" by B. Cordier et al., also appearing in A&A Letters (2025).
➡️ www.aanda.org/articles/aa/...
It discusses the SVOM detection and the reionization-era setting.
The second paper is "SVOM GRB 250314A at z ≃ 7.3: an exploding star in the era of reionization" by B. Cordier et al., also appearing in A&A Letters (2025).
➡️ www.aanda.org/articles/aa/...
It discusses the SVOM detection and the reionization-era setting.
Reposted by Carlos Glie
7/9
For more details, here's the first paper: "JWST reveals a supernova following a gamma-ray burst at z ≃ 7.3" by A. J. Levan et al., published in A&A Letters (2025).
➡️ www.aanda.org/articles/aa/...
It focuses on JWST observations and the supernova confirmation.
For more details, here's the first paper: "JWST reveals a supernova following a gamma-ray burst at z ≃ 7.3" by A. J. Levan et al., published in A&A Letters (2025).
➡️ www.aanda.org/articles/aa/...
It focuses on JWST observations and the supernova confirmation.
JWST reveals a supernova following a gamma-ray burst at z ≃ 7.3 | Astronomy & Astrophysics (A&A)
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
www.aanda.org
February 10, 2026 at 7:09 PM
7/9
For more details, here's the first paper: "JWST reveals a supernova following a gamma-ray burst at z ≃ 7.3" by A. J. Levan et al., published in A&A Letters (2025).
➡️ www.aanda.org/articles/aa/...
It focuses on JWST observations and the supernova confirmation.
For more details, here's the first paper: "JWST reveals a supernova following a gamma-ray burst at z ≃ 7.3" by A. J. Levan et al., published in A&A Letters (2025).
➡️ www.aanda.org/articles/aa/...
It focuses on JWST observations and the supernova confirmation.
Reposted by Carlos Glie
6/9
This primordial supernova is surprising because it looks so similar to nearby ones, even though ancient stars were expected to be more massive & have fewer heavy elements.
The team plans more JWST observations to study distant galaxies and gather more data, using the afterglow like a "torch."
This primordial supernova is surprising because it looks so similar to nearby ones, even though ancient stars were expected to be more massive & have fewer heavy elements.
The team plans more JWST observations to study distant galaxies and gather more data, using the afterglow like a "torch."
February 10, 2026 at 7:09 PM
6/9
This primordial supernova is surprising because it looks so similar to nearby ones, even though ancient stars were expected to be more massive & have fewer heavy elements.
The team plans more JWST observations to study distant galaxies and gather more data, using the afterglow like a "torch."
This primordial supernova is surprising because it looks so similar to nearby ones, even though ancient stars were expected to be more massive & have fewer heavy elements.
The team plans more JWST observations to study distant galaxies and gather more data, using the afterglow like a "torch."
Reposted by Carlos Glie
5/9
JWST arrived at the perfect moment, confirming it was a core-collapse supernova.
Not only that: it also captured the host galaxy, a faint red smudge but a historic one!
This beats JWST's previous record, a supernova from when the universe was 1.8 billion years old.
JWST arrived at the perfect moment, confirming it was a core-collapse supernova.
Not only that: it also captured the host galaxy, a faint red smudge but a historic one!
This beats JWST's previous record, a supernova from when the universe was 1.8 billion years old.
February 10, 2026 at 7:09 PM
5/9
JWST arrived at the perfect moment, confirming it was a core-collapse supernova.
Not only that: it also captured the host galaxy, a faint red smudge but a historic one!
This beats JWST's previous record, a supernova from when the universe was 1.8 billion years old.
JWST arrived at the perfect moment, confirming it was a core-collapse supernova.
Not only that: it also captured the host galaxy, a faint red smudge but a historic one!
This beats JWST's previous record, a supernova from when the universe was 1.8 billion years old.
Reposted by Carlos Glie
4/9
On 1 July 2025 (three and a half months later), JWST jumped in with quick near-infrared observations.
Why the wait?
The burst fades quickly, but the supernova rises to peak over weeks (rest frame); time dilation from cosmic expansion delays the observed peak by ~3.5 months.
On 1 July 2025 (three and a half months later), JWST jumped in with quick near-infrared observations.
Why the wait?
The burst fades quickly, but the supernova rises to peak over weeks (rest frame); time dilation from cosmic expansion delays the observed peak by ~3.5 months.
February 10, 2026 at 7:09 PM
4/9
On 1 July 2025 (three and a half months later), JWST jumped in with quick near-infrared observations.
Why the wait?
The burst fades quickly, but the supernova rises to peak over weeks (rest frame); time dilation from cosmic expansion delays the observed peak by ~3.5 months.
On 1 July 2025 (three and a half months later), JWST jumped in with quick near-infrared observations.
Why the wait?
The burst fades quickly, but the supernova rises to peak over weeks (rest frame); time dilation from cosmic expansion delays the observed peak by ~3.5 months.
Reposted by Carlos Glie
3/9
Follow-up happened quickly: ~ 11 h on, the Nordic Optical Telesc. detected the infrared afterglow fading, strong sign of huge distance. Then the VLT in Chile ran spectroscopy & estimated the blast occurred some 730 Myr after the Big Bang.
In 50 yrs, very few GRBs so ancient have been verified.
Follow-up happened quickly: ~ 11 h on, the Nordic Optical Telesc. detected the infrared afterglow fading, strong sign of huge distance. Then the VLT in Chile ran spectroscopy & estimated the blast occurred some 730 Myr after the Big Bang.
In 50 yrs, very few GRBs so ancient have been verified.
February 10, 2026 at 7:09 PM
3/9
Follow-up happened quickly: ~ 11 h on, the Nordic Optical Telesc. detected the infrared afterglow fading, strong sign of huge distance. Then the VLT in Chile ran spectroscopy & estimated the blast occurred some 730 Myr after the Big Bang.
In 50 yrs, very few GRBs so ancient have been verified.
Follow-up happened quickly: ~ 11 h on, the Nordic Optical Telesc. detected the infrared afterglow fading, strong sign of huge distance. Then the VLT in Chile ran spectroscopy & estimated the blast occurred some 730 Myr after the Big Bang.
In 50 yrs, very few GRBs so ancient have been verified.
Reposted by Carlos Glie
2/9
They picked up the burst on 14 March 2025, via the French-Chinese SVOM satellite.
Lasted about 10 s—a classic long gamma-ray burst (GRB), the kind usually triggered by a massive star's core collapsing & exploding violently.
Swift satellite quickly zeroed in on the X-ray spot, in under 90 min.
They picked up the burst on 14 March 2025, via the French-Chinese SVOM satellite.
Lasted about 10 s—a classic long gamma-ray burst (GRB), the kind usually triggered by a massive star's core collapsing & exploding violently.
Swift satellite quickly zeroed in on the X-ray spot, in under 90 min.
February 10, 2026 at 7:09 PM
2/9
They picked up the burst on 14 March 2025, via the French-Chinese SVOM satellite.
Lasted about 10 s—a classic long gamma-ray burst (GRB), the kind usually triggered by a massive star's core collapsing & exploding violently.
Swift satellite quickly zeroed in on the X-ray spot, in under 90 min.
They picked up the burst on 14 March 2025, via the French-Chinese SVOM satellite.
Lasted about 10 s—a classic long gamma-ray burst (GRB), the kind usually triggered by a massive star's core collapsing & exploding violently.
Swift satellite quickly zeroed in on the X-ray spot, in under 90 min.
Reposted by Carlos Glie
🧵1/9
Fascinating stuff— #JWST has spotted the oldest supernova ever confirmed.
It exploded when the #universe was just ~730 Myr old (~5% of its current age).
The whole thing began with a very bright gamma-ray burst, GRB 250314A.🔭 🧪
➡️ science.nasa.gov/missions/web...
#space #astronomy #science
Fascinating stuff— #JWST has spotted the oldest supernova ever confirmed.
It exploded when the #universe was just ~730 Myr old (~5% of its current age).
The whole thing began with a very bright gamma-ray burst, GRB 250314A.🔭 🧪
➡️ science.nasa.gov/missions/web...
#space #astronomy #science
February 10, 2026 at 7:09 PM
🧵1/9
Fascinating stuff— #JWST has spotted the oldest supernova ever confirmed.
It exploded when the #universe was just ~730 Myr old (~5% of its current age).
The whole thing began with a very bright gamma-ray burst, GRB 250314A.🔭 🧪
➡️ science.nasa.gov/missions/web...
#space #astronomy #science
Fascinating stuff— #JWST has spotted the oldest supernova ever confirmed.
It exploded when the #universe was just ~730 Myr old (~5% of its current age).
The whole thing began with a very bright gamma-ray burst, GRB 250314A.🔭 🧪
➡️ science.nasa.gov/missions/web...
#space #astronomy #science
Reposted by Carlos Glie
Yeah, 'Sausage' sounds ridiculous, right?
It’s actually from a 2018 paper where astronomers plotted the velocities of a bunch of weird stars in our galaxy. When they made the graph, the points formed this long, fat shape looking exactly like a sausage– so they just called it the Gaia Sausage.
1/3
It’s actually from a 2018 paper where astronomers plotted the velocities of a bunch of weird stars in our galaxy. When they made the graph, the points formed this long, fat shape looking exactly like a sausage– so they just called it the Gaia Sausage.
1/3
February 9, 2026 at 8:00 PM
Yeah, 'Sausage' sounds ridiculous, right?
It’s actually from a 2018 paper where astronomers plotted the velocities of a bunch of weird stars in our galaxy. When they made the graph, the points formed this long, fat shape looking exactly like a sausage– so they just called it the Gaia Sausage.
1/3
It’s actually from a 2018 paper where astronomers plotted the velocities of a bunch of weird stars in our galaxy. When they made the graph, the points formed this long, fat shape looking exactly like a sausage– so they just called it the Gaia Sausage.
1/3
Reposted by Carlos Glie
...but the process rapidly accelerated until its completion about two billion years later, when a dwarf galaxy known as Gaia-Sausage-Enceladus merged with the Milky Way.
This merger filled the halo with stars and triggered star formation in the nascent thick disk.
6/6
This merger filled the halo with stars and triggered star formation in the nascent thick disk.
6/6
February 9, 2026 at 7:37 PM
...but the process rapidly accelerated until its completion about two billion years later, when a dwarf galaxy known as Gaia-Sausage-Enceladus merged with the Milky Way.
This merger filled the halo with stars and triggered star formation in the nascent thick disk.
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This merger filled the halo with stars and triggered star formation in the nascent thick disk.
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