Did you miss Raúl Infante ( @cefca-oaj.bsky.social ) talking yesterday about #ARRAKIHS on #LaCuriosidadSalvoAlGato on @aragontv.bsky.social? 📺
Here’s the link to the program — he appears starting at 16:43 👇
alacarta.aragontelevision.es/programas/la...
To mark the International Day of Women and Girls in Science ( #11F ), we’ve created a memory challenge. You’ll need to match 6 female astrophysicists with their discoveries 💜🔭👩🏽🔬
Are you ready?: bit.ly/4qO4N7j
The penguin has been found… and it brought great news! 🐧📚
The ARRAKIHS Instrument iPDR data package has been officially delivered on time! ⚡️
Congratulations to everyone who contributed to this amazing work!
#NihilistPenguin #iPDR #ARRAKIHS #Instrument
Visualisation of one galaxy, but simulated many times assuming different parameters that control the detailed way in which massive stars explode at the end of their lives.
How do we prepare a space mission before it observes the Universe? 🤔
With simulations.
ARTEMIS simulations + machine learning help predict the properties of faint galaxy halos, preparing us for future ARRAKIHS observations 🌌
🔗 Read it here: www.arrakihs-mission.eu/2026/01/13/e...
🚀 Exciting Opportunity Alert!
We're expanding our team and looking for a Postdoctoral Position in the detector Characterization Group, at
IFAE.
➡️ Click here to apply: ifae.es/careers/jobs...
#hiring #joboffer
✨How many galaxies should #ARRAKIHS observe?
Simulations suggest ~80–84 gives a strong chance of capturing the diverse range of stellar halos needed for significant science, a smart balance of ambition and feasibility 🚀🌌
🔗 arrakihs-mission.eu/2025/12/19/h...
A 4 x 4 collage of ground-based images of nearby galaxy halos with stellar streams. Arrakihs will observe stellar streams 10 times fainter than these halo features.
In 2022, #Arrakihs was selected as a fast mission under #CosmicVision.
By imaging Milky Way-type galaxies in the nearby Universe, Arrakihs will provide important measurements to address key questions in galaxy formation theory.
1/ #CM25 🔭
The ARRAKIHS Mission Consortium wishes you a happy 2️⃣0️⃣2️⃣6️⃣!! 🎉🎊
#HappyNewYear
🔭 New research shows that AI models like SAM can measure galaxy sizes with ~1% accuracy.
This could be key for ARRAKIHS, helping detect faint halos, tidal streams, and other low–surface-brightness features that trace galactic evolution and dark matter.
📲 bit.ly/4pZR113
@cefca-oaj.bsky.social
A major boost for ARRAKIHS: The HARKONENS Project 💫
Led by Santi Roca Fábrega (Lund Univ.) and Corentin Cadiou (@iap.fr), has been awarded 234M CPU hours on @eurohpc-ju.bsky.social to run next-gen cosmological simulations supporting our mission.
🔗 www.arrakihs-mission.eu/2025/11/17/a...
Our colleague Raúl Infante (@cefca-oaj.bsky.social ), contributor to the Data Analysis (DAT), Coordination with other Surveys (CDR) and Data Reduction (RED-SCI) work packages, gave a talk at a #UNED course on November 4th 🤗
🔭 Nuestro compañero Raúl Infante, investigador del #CEFCA, abrirá el Curso de #Astronomía de la @uneduniv.bsky.social en #Teruel
Presentará @arrakihs-mission.eu , liderada por #España, cuya cámara binocular se prueba en el #OAJ ahora 🌠
ℹ️ Más info: extension.uned.es/actividad/id...
Our PI, Rafael Guzmán ( @ifca.es ), presented the #ARRAKIHSmission at the Spanish Space Agency (AEE) .
We thank Juan Carlos Cortés (AEE), and Isabel Pérez Grande (AEE) , for their support and for fostering collaboration within Spain’s growing space ecosystem.
🔗 sl1nk.com/Sc443
Gas density of the same subhalo across the different models during their infall to the host halo. Each column represents a different model, while each row indicates the same infall stage: (a) first snapshot at a distance to the host lower than , (b) at , (c) during the first apocenter, and (d) during the second infall, slightly before the second pericenter. From the time evolution we can distinguish how gas is stripped during infall and how virial radius is decreasing due to tidal stripping. Efficiency of stripping mechanisms is highly sensitive to the model.
When small galaxies meet big ones 💫
The #AGORA project explores how dwarf satellite galaxies stop forming stars , a process called “quenching”. What #ARRAKIHS will help us uncover.
📌 Ramón Rodríguez Cardoso (@ucm.es, GMV)
🔗 goo.su/R0s4d
Last Friday, some of our @ifca.es researchers took part in the #ERN2025 in Santander.
They were with the little ones, doing #ARRAKIHS puzzles as part of the science challenge 🧩
Thank you for your collaboration! 🙌🏼
@univcantabria.bsky.social @csic.es @csicdivulga.bsky.social
🔭📜🌌
Fossil Archives of the Universe
Joanna Sakowska ( @iaacsic.bsky.social ) explains how galactic halos reveal the history of galaxies
📹: youtu.be/3qIq8QJ3aYk
🚀 Exciting Opportunity Alert!
We're expanding our team and looking for a Product/Quality Assurance Engineer to join ARRAKIHS Mission at Satlantis.
➡️ Click here to apply: www.satlantis.com/job/product-...
#hiring #JobAlert #JobOffer
A map of the sky with sample galaxies, not the final list, but an example of how scientists build a clean selection for study.
A map of the sky!
🟢 Green = higher sensitivity
🔵 Blue = harder to see faint details
🔴 Red dots = sample galaxies (not the final list, but an example of the #ARRAKIHS selection process).
Credit: J. Román (@ucm.es)
ARRAKIHS prepares for orbit! 🛰️
A technical training campaign at Javalambre Observatory ( #CEFCA ) tested the iSIM-170 camera, a key instrument for the mission to study dark matter from space.
🔗 bit.ly/45AxiOa
#ARRAKIHS #ESA #DarkMatter #iSIM170 #Astrophysics #OAJ
How faint can we go? With #ARRAKIHS + VIS2, we can detect #galaxy features as dim as 31 mag/arcsec² 🌌
Using mock images, we subtracted stars, cleaned backgrounds, and applied astnoisechisel to extract even the faintest signals.
Credit: Helena Domínguez Sánchez
Dark matter ≠ Dark energy
But what’s the difference?🤔
Alex Riley (@durham-university.bsky.social), member of WP COS and GAL, breaks it down.
📹: youtu.be/unN_h1VhbjQ
📻🎙️ If you missed it live, here it is: rtve.es/play/audios/...
(The #interview starts at minute 29)
#ARRAKIHS #radio #rne #neudc
🎙️This Sunday at 11 AM, ARRAKIHS goes on air!
Pepa Fernández interviews our Principal Investigator, Rafael Guzmán, on Spanish national radio at "No es un día cualquiera".
#rne #neudc
🛰️ How will #ARRAKIHS reveal the invisible #universe?
Hugo Rosado (DEIMOS), Mission Planning Coordinator, explains how the mission will observe faint galaxies and uncover the structure of #darkmatter once in orbit.
🎥 youtu.be/a3IbBdOHY04
#ESA #telescope #spacemission
ARRAKIHS consortium members at the IIDAR workshop held at Satlantis.
Great week at #SATLANTIS for the #ARRAKIHS Instrument Intermediate Design and Analyses Review (IIDAR) workshop 🛰️
Key step ahead of PDR, with progress, collaboration & good conversations in Leioa.
Thanks to all involved!🤗
🔗 www.arrakihs-mission.eu/2025/06/13/a...
@esa.int #SpaceMission #workshop
Arrakihs, la primera misión espacial española, busca desvelar los secretos del universo oscuro dozz.es/stleg1
M101, Pinwheel Galaxy Larger than our Milky Way and bursting with star-forming regions—like cosmic fireworks in deep space.
M42, Orion Nebula A stellar nursery just 1,344 light-years away, where hundreds of new stars are being born right now.
M81, Bode’s Galaxy A beautiful spiral glowing with the energy of a supermassive black hole—70 million times the mass of our Sun.
💫 First observations with the Ground Demonstrator (OGD) at the Javalambre Astrophysical Observatory! 💫
1️⃣ M101, Pinwheel Galaxy
2️⃣ M42, Orion Nebula
3️⃣ M81, Bode’s Galaxy
#astrophysics #groundobservations #ARRAKIHS #OGD
@cefca-oaj.bsky.social #Satlantis @ifca.es
#space #mission
The ground-based demonstrator of @arrakihs-mission.eu is already capturing images! 🌌
The @esa.int mission, led by @ifca.es, will provide key information about dark matter.
Researchers from #IEEC at @ice-csic.bsky.social are taking part 🔝
@cefca-oaj.bsky.social
👉 www.ieec.cat/en/arrakihs-...
It should work now, try again! 🤗
🚀 #ARRAKIHS begins its scientific prepararion at the Javalambre Observatory!
A ground-based replica of the space camera is now operational—testing key tools and strategies ahead of launch.
🔗 goo.su/jB9Pvt
@ifca.es @cefca-oaj.bsky.social #Satlantis #groundobservations #galaxy #space #mission
