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Marie-Claude Boucher

@claude42.bsky.social
145 followers 404 following 17 posts

"En chair et en os, ceci est le résultat de la recette cosmique qui nous a créés."

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Reposted by Marie-Claude Boucher
Nereide @drnereide.bsky.social · 17/12/2024
1/6 🧪 ⚛️ #histsci #WomenInSTEM 🧵 There are shining examples of the fact that mathematics is not a “boys only” club. One among these is Gabrielle Émilie Le Tonnelier de Breteuil, marquise du Châtelet, born #OTD in 1706. A woman of many intellectual interests, Émilie⤵️
The image features Gabrielle Émilie Le Tonnelier de Breteuil, marquise
du Châtelet (1706-1749), French mathematician and physicist, in a
painting by Maurice Quentin de La Tour. Émilie is sitting at her desk.
She is dressed in noble clothes and has a hairstyle typical of
18th-century France. She is gently supporting her head with her left
hand, by her cheek; with her right hand she is handling a compass
pointed at the page of a book.

The image is in the Public Domain.
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Julien Bobroff @julien-bobroff.bsky.social · 09/08/2026
Super anecdote à raconter pendant l'éclipse. youtube.com/shorts/tNSLZ...
youtube.com
Une éclipse ça sert aussi à ça (vidéo n°575)
YouTube video by Julien Bobroff
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l'Humanité @humanite.fr · 30/07/2026
Des chercheurs japonais identifient un germe possiblement à l’origine de la maladie d’Alzheimer ➡️ l.humanite.fr/nBL
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Christophe Cassou @cassouman40.bsky.social · 28/05/2026
Canicule sans précédent au mois de Mai. Et en même temps, des politiques régressives qui, au lieu de réduire nos vulnérabilités, les amplifient en conscience&connaissance et préparent les +grandes catastrophes de demain. Un plaisir d'avoir échangé avec JM Jancovici! www.youtube.com/watch?v=2Ys8...
youtube.com
Réchauffement climatique :Jean-Marc Jancovici et Christophe Cassou dans le "8h30 franceinfo"
YouTube video by franceinfo
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SpringForward🌻☘️🥀🌺🦋 🇺🇦 🇨🇦 🇩🇰 🇬🇧 @springforward1.bsky.social · 28/05/2026
Colbert launches YouTube channel less than a week after late-night show ends www.theguardian.com/tv-and-radio...
theguardian.com
Colbert launches YouTube channel less than a week after late-night show ends
Channel quietly debuts over weekend with Only in Monroe video days after Thursday’s final Late Show episode
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Ron Filipkowski @ronfilipkowski.bsky.social · 28/05/2026
This is why Republicans are working so hard to distract people with nonsense like whether Talarico is a vegan. They have nothing else to sell other than new wars, a slush fund for criminals, a ballroom, and a lousy economy.
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Andrej Spiridonov @andrejpaleo.bsky.social · 10/04/2026
"These results highlight the key role of outgassing and deep Earth processes in influencing pCO2 variation and climate dynamics with implications for understanding historical climate variations" www.sciencedirect.com/science/arti... 🧪 ⚒️ #Geology #Paleobio #Climate
. Atmospheric CO2 (pCO2) level through PhanerozoicComparison between modeled and proxy-derived ranges of atmospheric pCO during the Phanerozoic
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Nereide @drnereide.bsky.social · 04/04/2026
From #Apollo (left) to #Artemis (right), two glances at our only home, 54 years apart. One was our Blue Marble — full and vibrant. The other seems like a tiny, solitary jewel in the black cosmic ocean. Yet it’s always the same #Earth. The same heartbeat. That’s us… in both.❤️ 🔭 🧪
This is Earth as photographed by the Apollo 17 crew on December 7, 1972. The whole planet pretty much fills the picture — you see the deep blue oceans, those swirling white clouds, and Africa standing out as this big brown landmass right from the center to the upper left. It’s the famous Blue Marble shot. Credit: NASAFull view of Earth from the Orion spacecraft during Artemis II. Pale blue planet with white clouds, Africa visible on the left with the Iberian Peninsula twinkling with city lights along the curved edge. A soft green aurora glows near the top right. Taken against the blackness of space. Credit: NASA/Reid Wiseman
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NSF–DOE Rubin Observatory @rubinobservatory.org · 02/04/2026
Introducing over 11,000 new members of the Solar System...and our main survey hasn't quite started yet! ☄️ Using pre-survey observations from 2025, NSF–DOE Rubin Observatory scientists have reported more than 11,000 new asteroids and comets! 🔭🧪 🔗: rubinobservatory.org/news/11000-n...
Illustration of the solar system with planet orbits, surrounded by a blue donut cloud of asteroids. Rays of turquoise dots in the front half of the donut show thousands of objects revealed by Rubin.
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DeniseG @denisegutzmer.bsky.social · 20/03/2026
Records shattered as summer heat hits Southwest in March; ‘This is what climate change looks like’ The Southwest can cope with deadly heat, but not months early, like 110°F (43.3 Celsius) in the Arizona desert on Thursday, setting a new March high temp record in the US. 🧪 apnews.com/article/heat...
apnews.com
Records shattered as summer heat hits Southwest in March; 'This is what climate change looks like'
Scientists say a record-smashing March heat wave in the U.S. Southwest shows climate change is already driving more dangerous weather extremes.
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Marie-Claude Boucher @claude42.bsky.social · 08/03/2026
Des études très courtes et un nombre limité de participants .
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Marie-Claude Boucher @claude42.bsky.social · 08/03/2026
Un échantillon de 216 participants recrutés via Amazon Mechanical Turk a complété des questionnaires sur l'orientation politique, les connaissances politiques et le style cognitif, ainsi qu'un test de précision du contrôle métacognitif politique, entre février 2021 et mars 2022.
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Patrick McCann @pjmccann3.bsky.social · 08/03/2026
Nothing surprising here… #MedSky 🧪 www.psypost.org/people-with-...
psypost.org
People with the least political knowledge tend to be the most overconfident in their grasp of facts
People often misjudge their understanding of verifiable political facts. A new study published in the Journal of Experimental Psychology: Applied provides evidence that individuals with the least actu...
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Ava Polzin @avapolzin.bsky.social · 08/03/2026
Happy International Women's Day! Perfect time for me to (re)share our white paper on increasing the retention of women in professional astrophysics (really full of suggestions that broaden participation in academic science in general). arxiv.org/abs/2512.24465 🧪🔭☄️👩‍🔬
Cover of "Picture an Astronomer: Best Practices for Retaining Talent in Astrophysics", which features an illustration of a 19-year-old Vera Rubin looking through a telescope over a backdrop of a first light image of spiral galaxies from the Rubin Observatory.
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Compound Interest | Chemistry infographics @compoundchem.com · 08/03/2026
On #InternationalWomensDay, here's another edition of Women in Chemistry History. This edition features women whose achievements in chemistry include the creation of synthetic emeralds, the impact of diet on intelligence and health, and more: www.compoundchem.com/2026/03/08/i... #ChemSky 🧪
Infographic highlighting the contributions of twelve women in chemistry history. Full alt-text available at the link in the post.
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Bruce Little @brucedlittle.bsky.social · 07/03/2026
Is it really a war? Play along with Andrew Heaton's new game show.
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Daniel Pomarède @pomarede.bsky.social · 07/03/2026
ESCAPADE spacecraft are now flying through Earth’s magnetotail Launched to Mars in November, NASA’s ESCAPADE probes - operated by @ucbssl.bsky.social - are now testing their instruments in a never-before-visited region of Earth’s magnetic field. www.ssl.berkeley.edu/escapade-mag... 🧪🔭 #ESCAPADE
ssl.berkeley.edu
ESCAPADE spacecraft are now flying through Earth’s magnetotail
With their instruments now fired up and recording data, the twin ESCAPADE satellites are undertaking a test run before they head to Mars later this year. On Wednesday, Mar. 4, they will plow throug…
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Dr. Serge Zaka @sergezaka.bsky.social · 07/03/2026
J'ai toujours été prudent quant à l’idée d’une accélération du réchauffement mondial. À partir de maintenant, je ne le serai plus. 1/6
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C&EN (Chemical & Engineering News) @cenmag.bsky.social · 07/03/2026
The war in Iran has taken one-third of the world’s helium supply off the market. And if the conflict continues for more than 2 weeks, disruption for helium users could take months to resolve. #chemsky 🧪
cen.acs.org
Iran war threatens global helium supply
Attacks on Qatar and the Strait of Hormuz remove one-third of the world’s helium from the market
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Greg Priest @gregpriest.bsky.social · 07/03/2026
John Herschel was born OTD in 1792. His 1831 Preliminary Discourse launched a flowering of reflection on the aims and methods of science among British thinkers that was so rich and influential that Charles Sanders Peirce would later dub it “the Age of Method.” 🧪#HistSTM #PhilSci 🐋🌱
Photographic portrait of H by Julia Margaret Cameron. Wikipedia.
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Roger Freedman @rogerfreedman.bsky.social · 06/03/2026
For #WomensHistoryMonth: Let us celebrate the life and accomplishments of experimental physicist Fay Ajzenberg-Selove (1926-2012). An expert on the lighter atomic nuclei, she had many notable triumphs in the struggle to improve the standing of women in physics. 🎢⚛️🧪 #WomenInSTEM 🧵1/n
Photograph of Fay Ajzenberg-Selove
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Nereide @drnereide.bsky.social · 07/03/2026
🧵 #Hubble celebrated its 31st anniversary with this impressive view of AG Carinae, a luminous blue variable (LBV) 20,000 ly away in the constellation Carina. Credit: ESA/Hubble and NASA, A. Nota, C. Britt 🔭 🧪 ⚛️ ➡️ esahubble.org/images/potw2... #universe #space #astronomy #stellarastro #science 1/3
This view shows puffing dust bubbles and an erupting gas shell — the final acts of a monster star.
It is about the star AG Carinae. The image showcases the details of the ionised hydrogen and ionised nitrogen emissions from the nebula (seen here in red). The blue demonstrates the contrasting appearance of the distribution of the dust that shines of reflected stellar light. Astronomers believe that the dust bubbles and filaments formed within and were shaped by powerful stellar wind .
The star is surrounded by an expanding shell of gas and dust — a nebula — that is shaped by the powerful winds emanating from the star. The nebula is about five light-years wide, equal to the distance from here to our nearest star, Alpha Centauri.
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HiRISE Beautiful Mars (NASA) @uahirise.bsky.social · 23/02/2026
HiRISE 3D: Candidate Landing Site near Hypanis Valles If a rover were to land here, our 3D image can help with assessing how well it could traverse the terrain. www.uahirise.org/anaglyph/ESP_03771… NASA/JPL-Caltech/University of Arizona #Mars #NASA #science
3D images shows several small mounds rising above the surface of Mars near an area called Hypanis Valles. The scene is less than 5 km, or 3 miles, across.
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AAS Nova @aasnova.org · 23/02/2026
How do giant low-surface-brightness galaxies form? New research investigates two galactic specimens to search for clues. aasnova.org/2026/02/23/f... 🔭🧪
aasnova.org
Featured Image: Rare Giant Galaxies
How do giant low-surface-brightness galaxies form? New research investigates two galactic specimens to search for clues.
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Ben Hord @benhord.bsky.social · 21/02/2026
Nature wrote an article about my role on NASA’s Pandora mission! Aside from being a cutting-edge exoplanet explorer, Pandora serves as a way for early career folks to gain hands-on experience serving in mission leadership roles. Read about it here:🧪🔭 www.nature.com/articles/d41...
nature.com
NASA’s latest telescope is a feat of early-career leadership
The Pandora satellite provides career training grounds while observing exoplanets.
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Libération @liberation.fr · 16/02/2026
⚫ Du «Parrain» à «M.A.S.H.» ou «Apocalypse Now», Robert Duvall a incarné de sa puissance discrète tous les rôles de l’Amérique profonde, au long d’une carrière à la longévité exceptionnelle. Il est mort dimanche 15 février à l’âge de 95 ans. ➡️ bit.ly/4chhTX5
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The New York Times @nytimes.com · 16/02/2026
From @theathletic.com: “They wouldn’t bring me all that way not to play me, right?” Canadian teenager Macklin Celebrini went from wondering if he would play to scoring four goals through three games in his debut Olympics. nyti.ms/4qIU7Xx
Headline: Macklin Celebrini’s Olympic Success Is Surreal Even for His Dad. A photo shows Macklin Celebrini of Team Canada playing hockey.
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Nereide @drnereide.bsky.social · 13/02/2026
🧵 Are we at a breakthrough in VUV laser tech? It seems so: nuclear clocks could be way more accurate than what we have now, leading to substantial advantages. Read the following. 1/3 ⚛️ 🧪 #physics #science #laser #technology #clock
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Nereide @drnereide.bsky.social · 14/02/2026
🧵 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
#JWST infrared deep field: golden-white distant galaxies on black space. Central soft blue #Chandra glow marks hot gas around a tight group of young galaxies. Brightest one has big diffraction spikes. Possibly the earliest protocluster seen—only ~1 billion years post-Big Bang.
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HiRISE Beautiful Mars (NASA) @uahirise.bsky.social · 04/02/2026
HiPOD: About a Pedestal Crater The objective of this observation is to examine a pedestal crater here in Deuteronilus Mensae. A pedestal crater is when the ejecta from an impact settles and is more erosion-resistant than the surrounding terrain. uahirise.org/hipod/ESP_076643_2260 #Mars
Image cutout shows a pedestal crater on the surface of Mars. The ejecta blanket from the original impact is still visible around the crater, because it was more resistant to erosion than the surrounding terrain.A closeup of the impact crater. The crater rim is very eroded and there are numerous large boulders around the crater.
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Astronomy 🔭 @astronomy.bsky.social · 09/02/2026
Remastered Voyager 2 images show Uranus's moon Miranda. Its fractured surface suggests a past liquid water ocean may be slowly freezing beneath the ice. This makes Miranda a significant target in the search for water and potential life. Credit: NASA/ APOD
Miranda Revisited
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Andrea Luck @andrealuck.bsky.social · 27/12/2025
Hey Martians, did I mention we now also have a video of epic Phobos passing over a Martian dust storm near Pavonis Mons? 🌪️🌋🥔 Video & full info: flic.kr/p/2rNN8wk Credit: ESA/DLR/FUBerlin/AndreaLuck CC BY @esa.int Mars Express HRSC 300 MP Photo quoted below Easy zoom: easyzoom.com/image/674026
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Corey S. Powell @coreyspowell.bsky.social · 04/02/2026
This is the most detailed map yet of dark matter in the universe, based on JWST observations of 800,000 galaxies. The background image shows those galaxies in infrared light. Yellow indicates the location of dark matter, inferred from its gravitational pull. 🧪🔭 www.nasa.gov/missions/web...
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Nereide @drnereide.bsky.social · 01/02/2026
🧵 This amazing pic by Matteo Dunchi features the Andromeda Galaxy (M31), rising over the Italian Alps in July 2015. Although M31 appears in the sky as a faint and fuzzy blob to the unaided eye, its light is about 2.5 Myr old, making it likely the oldest... ➡️ apod.nasa.gov/apod/ap15081... 🔭 🧪 1/8
Shadowy Italian Alps peaks below a deep inky-blue sky full of sharp stars. Andromeda glows softly in the middle as a big oval patch, brighter at the center, fading into a hazy ring.
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Mark Gongloff @markgongloff.bsky.social · 24/01/2026
We’re supposed to believe this is a domestic terrorist attacking ICE with a gun
A photo of the man murdered by ICE today, just before the shooting. He’s standing and holding a phone in his right hand and holding his empty left hand to the sky and looking behind him at a woman running away while an ICE agent closes in on him from the front. On the ground behind the man is a woman that the victim will soon try to help, leading several ICE agents to attack him and pin him to the ground, before shooting him several times.
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Western Lens @planzing.bsky.social · 24/01/2026
Red Rocks at Sunset…
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Space Telescope Science Institute @stsci.edu · 20/01/2026
Watch as the most detailed infrared view of the Helix Nebula from #NASAWebb is put into context using the famous visible light image from Hubble and previous infrared imaging from the retired Spitzer Space Telescope: news.stsci.edu/4qPKTsL
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Aurélien Genin @astroaure.eurosky.social · 20/01/2026
🔭 Le télescope spatial James Webb révèle de splendides détails dans la nébuleuse de l'Hélice 😍 Ce nuage de gaz chaud et ionisé en expansion et le résultat de l'explosion d'une étoile similaire à notre Soleil !
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Landru79 @landru79.bsky.social · 20/01/2026
James #Webb Space Telescope #JWST Imaging dust knots in a planetary nebula TARG: #NGC7293 #Helix Nebula 2024-10-24 PI: Garcia Marin, Macarena NIRCAM 444-470 444 356 212 187 115 yuval-harpaz.github.io/astro/jwst_l... NASA/ESA/CSA/STScI/j. Roger
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Museum of Science @museumofscience.bsky.social · 20/01/2026
We're celebrating the 96th revolution around the Sun of astronaut Buzz Aldrin. As the Lunar Module pilot on Apollo 11, he was one of the first two humans to walk on the Moon and helped carry out scientific experiments that expanded our understanding of space. #BuzzAldrin #Astronaut #Space #Rocket
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Nereide @drnereide.bsky.social · 09/01/2026
It is thought that Jupiter's moon Europa contains a vast underground ocean, bigger than all Earth's oceans combined. For yrs, we've dreamed it might teem with life thanks to chemical energy from hot rocks. But a fresh study has weakened that idea.🔭 ➡️ eeps.wustl.edu/news/jupiter... 🧪 #planetsci 1/6
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Great art on Bluesky @art.feediverse.org · 02/01/2026
Stenographic Figure, 1942 #americanart #jacksonpollock
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Brian Tyler Cohen @briantylercohen.bsky.social · 23/12/2025
Canadians have leaked 60 Minutes’ banned episode investigating Trump’s illegal actions in direct defiance of CBS censorship.
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Andrea Luck @andrealuck.bsky.social · 21/12/2025
1/n 2 NEW epic images of Phobos over Mars just released by @esa.int Mars Express This view is especially striking, with Phobos between the Tharsis volcanoes and Noctis Labyrinthus–Valles Marineris Full resolution 300MP(!) & info on: flic.kr/p/2rMW4so Credit: ESA/DLR/FUBerlin/AndreaLuck CC BY 🧪🔭
A wide view of the planet Mars fills the frame, shown as a curved, rust-colored world against black space. The bottom edge fades into darkness, marking the planet’s night side, while the upper portion is brightly lit by sunlight. Near the right side are three large, round volcanic mountains of the Tharsis region, each with a wide circular base and a darker central caldera, resembling shallow craters pressed into the surface. North of these volcanoes, stretching almost vertically across the upper right half of the planet, lies Noctis Labyrinthus and Valles Marineris: an immense system of deep canyons and fractured terrain that appears as pale, branching scars and cracks, partly softened by hazy, cloud-like atmospheric features. Near the center of the image, positioned between the volcanoes and the canyon system, a small dark oval appears against Mars’s surface. This is Phobos, one of Mars’s satellites. Its tiny size stands out sharply against the vast scale of the planet below.
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Marie-Claude Boucher @claude42.bsky.social · 19/12/2025
www.youtube.com/watch?v=aRWI... "repousser ses limites", au moment où les scientifiques rapportent que sept des neuf limites planétaires ont déjà été franchies.
youtube.com
Étienne Klein - Comprendre plutôt que craindre
YouTube video by Logarythm
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Governor Gavin Newsom @governor.ca.gov · 17/12/2025
Jacking up costs, surging unemployment, terrorizing communities, and millions spent gold-plating the Oval Office. Trump's year of historic accomplishments indeed.
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Landru79 @landru79.bsky.social · 05/12/2025
James #Webb Space Telescope #JWST Vast Exploration for Nascent, Unexplored Sources High-redshift Galaxies and the Distant Universe TARG: #MACSJ0159-0849 2025-12-01 PI: Fujimoto, Seiji NIRCAM 444 410 300 277 210 200 150 115 090 yuval-harpaz.github.io/astro/jwst_l... NASA/ESA/CSA/STScI/j. Roger
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Corey S. Powell @coreyspowell.bsky.social · 16/12/2025
What's causing these weird blue flashes in the sky? A new study suggests an extreme explanation: The most recent flash probably came from a giant star, 10x the mass of the Sun, being completely consumed by a black hole in just a few days. Ulp. 🧪🔭 noirlab.edu/public/news/...
This composite image features X-ray, ultraviolet, optical, and near-infrared data of the luminous fast blue optical transient (LFBOT) named AT 2024wpp. The transient is the bright spot at the upper right edge of its host galaxy, which is 1.1 billion light-years from Earth.
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Caltech @caltech.edu · 16/12/2025
Astronomers are reporting evidence for a possible second kilonova event, but the case is not closed. In fact, this situation is much more complex. www.caltech.edu/about/news/p...
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