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#apod 2026-10-25
Dark Matter in a Simulated Universe
Image Credit: Tom Abel & Ralf Kaehler (KIPAC , SLAC), AMNH
Web page: https://science.nasa.gov/image-article/apod-2026-october-25-dark-matter-in-a-simulated-universe/
webinfo-image-2321457612.jpg
October 25, 2026 at 9:30 AM
kipac.bsky.social
🌌 Why did Shreya Anand choose KIPAC?

2027 KIPAC Postdoctoral Fellowships are open! Apply by Nov 2: t.co/WsrEzKOekA

#KIPAC #Postdoc #Astrophysics #Rubin
October 28, 2026 at 6:09 PM
powerfromspace1.bsky.social
#DarkMatter in a Simulated Universe
Image: Tom Abel & Ralf Kaehler (KIPAC , SLAC)

Explanation: Is our universe haunted? It might look that way on this dark matter map. The gravity of unseen dark matter is the leading explanation for why galaxies rotate so fast... science.nasa.gov/image-articl...
October 25, 2026 at 8:59 PM
sublime-space.bsky.social
Credit: Tom Abel & Ralf Kaehler (KIPAC , SLAC), AMNH
Source: https://science.nasa.gov/image-article/apod-2026-october-25-dark-matter-in-a-simulated-universe/
October 25, 2026 at 4:00 PM
apod.sizo.dev
🔭 Materia oscura en un universo simulado

Créditos: Tom Abel, Ralf Kaehler, KIPAC, SLAC, AMNH, Robert Nemiroff, Jerry Bonnell, Cecilia Chirenti y Keighley Rockcliffe
Fuente: https://science.nasa.gov

#astronomia #cosmos #nasa #apod
¿Está embrujado nuestro universo? Eso podría parecer al observar este mapa de materia oscura. La gravedad de la materia oscura invisible es la principal explicación de por qué las galaxias giran tan rápido, por qué orbitan a gran velocidad dentro de los cúmulos, por qué las lentes gravitatorias desvían tanto la luz y cómo se distribuye la materia visible. La imagen, procedente del espectáculo espacial Dark Universe del Planetario Hayden del Museo Americano de Historia Natural, muestra un ejemplo de cómo la materia oscura podría estar presente por todo el universo. En este fotograma de una detallada simulación informática, los complejos filamentos de materia oscura, representados en negro, se extienden por el universo como telarañas, mientras que los relativamente escasos cúmulos de materia bariónica conocida aparecen en naranja. Estas simulaciones concuerdan estadísticamente con las observaciones astronómicas. Y, en un giro quizá aún más inquietante, aunque la materia oscura es muy extraña y su naturaleza se desconoce, ya no se considera la fuente de gravedad más extraña del universo. Ese honor le corresponde ahora a la energía oscura: una fuente de gravedad repulsiva más uniforme que parece dominar actualmente la expansión de todo el universo.
October 25, 2026 at 9:00 AM
kipac.bsky.social
🌌 Why did Ana Ennis choose KIPAC?

2027 KIPAC Postdoctoral Fellowships are open! Apply by Nov. 2: t.co/WsrEzKOekA

#KIPAC #Postdoc #Astrophysics
October 20, 2026 at 4:54 PM
xandaolp.bsky.social
Dark Matter in a Simulated Universe
Credit & Copyright: Tom Abel & Ralf Kaehler (KIPAC , SLAC), AMNH
Authors & editors: Robert Nemiroff, Jerry Bonnell, Cecilia Chirenti, Keighley Rockcliffe
science.nasa.gov/apod/?date=2...
The gravity of unseen dark matter is the leading explanation for why galaxies rotate so fast, why galaxies orbit clusters so fast, why gravitational lenses so strongly deflect light, and how visible matter is distributed. The featured image from the American Museum of Natural History's Hayden Planetarium Space Show, Dark Universe, highlights one example of how pervasive dark matter might haunt our universe. In this frame from a detailed computer simulation, complex filaments of dark matter, shown in black, are strewn about the universe like spider webs, while the relatively rare clumps of familiar baryonic matter are colored orange. These simulations are good statistical matches to astronomical observations. Dark matter is no longer thought to be the strangest source of gravity in the universe. That honor now falls to dark energy, a more uniform source of repulsive gravity that seems to now dominate the expansion of the entire universe.
October 25, 2026 at 8:28 AM
barretblake.dev
Dark Matter in a Simulated Universe
https://assets.science.nasa.gov/content/dam/science/cds/apod/apod/2021/october/DarkMatter_KipacAmnh_1200.jpg?w=1200&h=900&fit=clip&crop=faces%2Cfocalpoint
Credit: Tom Abel & Ralf Kaehler (KIPAC , SLAC), AMNH
Explanation: Is our universe haunted? It might look that way on this dark matter map. The gravity of unseen dark matter is the leading explanation for why galaxies rotate so fast, why galaxies orbit clusters so fast, why gravitational lenses so strongly deflect light, and how visible matter is distributed. The featured image from the American Museum of Natural History's Hayden Planetarium Space Show, Dark Universe, highlights one example of how pervasive dark matter might haunt our universe. In this frame from a detailed computer simulation, complex filaments of dark matter, shown in black, are strewn about the universe like spider webs, while the relatively rare clumps of familiar baryonic matter are colored orange. These simulations are good statistical matches to astronomical observations. In what is perhaps a scarier turn of events, dark matter -- although quite strange and in an unknown form -- is no longer thought to be the strangest source of gravity in the universe. That honor now falls to dark energy, a more uniform source of repulsive gravity that seems to now dominate the expansion of the entire universe. Tomorrow's picture: Orion the Great
October 25, 2026 at 1:00 PM
kipac.bsky.social
“I chose KIPAC for the incredible people and the freedom to explore big ideas.” 🌌

2027 KIPAC Postdoctoral Fellowships are open. Apply by Nov 2: academicjobsonline.org/ajo/Stanford/KIPAC/FELLOWS

#postdoc #astro #cosmology
October 12, 2026 at 6:21 PM
kipac.bsky.social
How do you "see" a magnetic field you can't touch? Take 48 stacked camera lenses and turn them into a polarization camera. 🔭 Meet DragonflyPol, born from a single KIPAC Innovation Grant. kipac.stanford.edu/news/how-do-...
How Do You "See" a Magnetic Field You Can't Touch?
DragonflyPol turns the Dragonfly Telephoto Array — 48 stacked Canon camera lenses — into a wide-field polarization camera.
kipac.stanford.edu
October 7, 2026 at 5:40 PM
kipac.bsky.social
🎧 KIPAC senior member Dan Akerib joins Sean Carroll's Mindscape podcast to talk about a faint hint of dark matter in the LZ experiment: one intriguing event, low significance, big questions.

preposterousuniverse.com/podcast/2026...
370 | Daniel Akerib on a Faint Hint of Dark Matter – Sean Carroll
preposterousuniverse.com
October 6, 2026 at 6:05 PM
kipac.bsky.social
A single weird particle just lit up the world's biggest dark matter detector, buried nearly a mile underground. 🕳️

Not a discovery yet (2.6σ) — but physicists can't explain it away.

🔗 www.science.org/content/arti...

#DarkMatter #KIPAC
World’s biggest dark matter detector spots a single weird particle
It’s far too early to declare a discovery, physicists with the LZ detector say
www.science.org
September 3, 2026 at 3:45 PM
kipac.bsky.social
We know dark matter exists from its gravity — we've just never caught it directly. Our own scientists are chasing that first catch.

#KIPAC #DarkMatter #SLAC #Stanford
August 27, 2026 at 6:59 PM
kipac.bsky.social
Curious what eclipses can teach us about our closest star? Watch our public lecture on solar physics and space weather, held right after the 2023 U.S. eclipse: www.youtube.com/live/SECe-9i...
Public Lecture: Solar Astrophysics
YouTube video by KIPAC
www.youtube.com
August 24, 2026 at 9:35 PM
kipac.bsky.social
Totality in action! ☀️🌑 KIPAC grad student Pam Stark and fellow Invisibles26 Workshop attendees caught the total solar eclipse while in Spain — during a workshop on invisible matter in the Universe. A reminder there's always more to learn about our Sun!
August 24, 2026 at 9:34 PM
peterdedmonds.bsky.social
Final briefing speaker is Miltiadis Michailidis (KIPAC/Stanford University/SLAC National Accelerator Laboratory) talking about "Unveiling the First Binary-System Supernovae". Two overlapping supernova remnants acting as particle accelerators (and not chance coincidence alignment). #aas248
An image of
June 17, 2026 at 5:55 PM
kipac.bsky.social
New from Stanford/SLAC-KIPAC: a single number predicts whether an intense radio wave survives or gets torn apart passing through electron-positron plasmas — relevant for conditions thought to exist surrounding magnetars, the likely source of Fast Radio Bursts.
July 29, 2026 at 10:14 PM
kipac.bsky.social
Two stars. One binary system. Both exploded as supernovas — tens of thousands of years apart. 16 years of NASA Fermi LAT data (built at @stanford.edu / SLAC National Accelerator Laboratory) just confirmed the first known "sibling" supernova remnants, hiding in the glare of the Jellyfish Nebula.🔗👇
All in the family: Fermi data links supernova siblings
A study led by KIPAC members and using Fermi/LAT data has uncovered compelling evidence that two neighboring supernova remnants (SNRs), the debris left behind after stars explode, are actually the rem...
kipac.stanford.edu
July 24, 2026 at 5:51 PM
kipac.bsky.social
We are thrilled to welcome Einstein Fellows Frank Qu and Dhayaa Anbanjagane to KIPAC! science.nasa.gov/missions/hub...
NASA Awards Astrophysics Postdoctoral Fellowships for 2026 - NASA Science
The highly competitive NASA Hubble Fellowship Program (NHFP) recently named 24 new fellows to its 2026 class.
science.nasa.gov
April 1, 2026 at 8:41 PM
kipac.bsky.social
KIPAC scientists are excited to get our hands on data from @VRubinObs.bsky.social and we had an event last week to help us analyze it! Our Rubin Data Exploration Day event had speakers and workshops for scientists of all career stages. Check out some photos from the event:
July 21, 2025 at 12:39 AM
kipac.bsky.social
Over 600 people showed up at Hewlett to hear from KIPAC scientists about @vrubinobs.bsky.social at our special public lecture event on Tuesday! The full event is now on YouTube in case you missed it: www.youtube.com/live/9R9lIkQ...
July 4, 2025 at 12:32 AM
kipac.bsky.social
KIPAC is teaming up with California Academy of Sciences this Saturday to celebrate the First Look from @VRubinObs.bsky.social! 🤩 Join our scientists for short talks on how Rubin is uniquely poised to transform multiple sub-fields of astronomy. 🔭✨

More info: www.calacademy.org/events/progr...
Vera C. Rubin Observatory - The First Look
Join us to celebrate and learn about the first images from the Rubin Observatory talks at Science Today.
www.calacademy.org
June 27, 2025 at 1:52 PM
kipac.bsky.social
Thousands of people joined us for our KIPAC + Friends Community Day this past weekend, checking out dozens of activity booths and talks hosted by KIPAC and our partners! Sign up for our mailing list to hear about future events: bit.ly/KIPAC_outreach
April 22, 2025 at 9:47 PM
kipac.bsky.social
Join us for our biggest event of the year, KIPAC (+ friends) Community Day, on Saturday April 19th from 1-5pm! Come enjoy 30+ hands-on STEM activities, demos & mini-lectures. Register here: bit.ly/community-da... for a chance to win a meteorite
April 9, 2025 at 5:20 PM
kavlifoundation.org
“The first images are spectacular, and it’s mind-blowing to think about what we’ll be able to do with this survey.” -Risa Wechsler, KIPAC Director

This fall, the Rubin Observatory begins its decade-long #LSST sky survey, built on two decades of work at KIPAC: https://bit.ly/48eksFt

#KavliAstro
November 29, 2025 at 12:17 AM