Daniel Pomarède
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pomarede.bsky.social
Daniel Pomarède
@pomarede.bsky.social
7.3K followers 270 following 2.7K posts
Cosmographer at Univ. Paris-Saclay | mapping the Universe | co-discoverer of Laniakea (our home supercluster of galaxies), Hoʻoleilana, and some other (very) large scale structures
📖 https://orcid.org/0000-0003-2038-0488
▶️ https://vimeo.com/pomarede
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pomarede.bsky.social
Daniel Pomarède @pomarede.bsky.social · Nov 16
Martian robot spinning her turret!

A video sequence captured by the Perseverance rover using her Right Mastcam-Z science Camera on Jan. 27, 2024 (Sol 1044). The full sequence, accelerated here, actually took 3 minutes.
Credit images: NASA/JPL-Caltech/ASU
Reposted by Daniel Pomarède
science.esa.int
❄️ Earth isn’t the only planet to go through ice ages. The Red Planet experiences them too – as revealed in this new image from our #MarsExpress mission 🔴

Zoom in and explore the image in more detail 👉 www.esa.int/Science_Expl...
A section of Mars’s surface in shades of light brown and tan. It features several large circular craters scattered across the terrain, along with long, parallel ridges running diagonally from the lower left to the upper right. The ridges appear raised and rugged, while the craters are deep and round. The overall texture looks rough and uneven, suggesting erosion and ancient geological activity.
November 12, 2025 at 10:10 AM
pomarede.bsky.social
Prof. Wendy Freedman recognized with 2026 Franklin Institute Award in Physics

Pioneering cosmologist honored for landmark measurements of the Hubble Constant. 🧪 #Cosmology

news.uchicago.edu/story/prof-w...
Prof. Wendy Freedman recognized with 2026 Franklin Institute Award in Physics
Pioneering cosmologist honored for landmark measurements of the Hubble Constant
news.uchicago.edu
November 12, 2025 at 9:59 AM
pomarede.bsky.social
in the #arXiv

Dissecting the Perseus-Pisces supercluster observed with CFHT-MegaCam: Investigating environmental effects on galaxy morphology

by Maëlie Mondelin and co-authors
arxiv.org/abs/2511.05925 🧪🔭
This is Figure 2 of paper, featuring a sky-projected distribution of galaxies in the PPSC (Perseus-Pisces Supercluster) catalog. Grey dots represent galaxies from the PPSC catalog. Group and cluster centres identified are shown as gold points: from the left to the right in the region A, A 426, AWM7, a group with UGC 1841, and A 347. The projected skeleton, extracted from the final 3D structure, is represented by dark lines and traces the projected filamentary network. The boundaries of the region A and the region B are shown in purple and blue, respectively. A cyan contour indicates the footprint of the Euclid ERO Perseus field, overlaid for reference.
November 12, 2025 at 9:36 AM
Reposted by Daniel Pomarède
lloydchery.bsky.social
Mort de Tatsuya Nakadai, immense acteur du cinéma Japonais ! Il aura eu une filmographie sublime : Hara-Kiri, Kagemusha, Ran, Goyokin, Yojinbo, Sanjuro, La Condition de L’homme, Le Sabre du Mal, Rébellion, Après La Pluie. Un monstre équivalent à Toshiro Mifune et Takashi Shimura. RIP
November 11, 2025 at 8:50 AM
Reposted by Daniel Pomarède
usngo.bsky.social
From @noirlabastroes.bsky.social: The moon rests behind Cerro Pachón, the home of three NOIRLab-operated telescopes: @vrubinobs.bsky.social, Gemini South, and the SOAR Telescope. #astronomy

📸: CTIO/NOIRLab/NSF/AURA/P. Horálek
November 11, 2025 at 6:00 PM
Reposted by Daniel Pomarède
science.esa.int
#CometInterceptor will be the first mission to visit a comet coming directly from the outer reaches of the Sun's realm, carrying material untouched since the dawn of the Solar System.

Part of #CosmicVision, Comet Interceptor is an ESA-led mission in collaboration with JAXA.

1/ #CM25 🔭
Illustration showing spacecraft A, probe B1 built by JAXA and probe B2, and the suite of instruments they each carry, alongside other important components. The instruments and parts are colour coded according to four categories: blue for Dust, Fields and Plasma (DFP) instrument suite, orange for Plasma instrument suite, red for other scientific instruments, and green for important components.
November 11, 2025 at 1:03 PM
Reposted by Daniel Pomarède
jackiebranc.site
🔴 #Mars #Perseverance Sol 1678: Right #Mastcam-Z Camera / enhanced

Nov. 8, 2025 (Sol 1678), 12:28:20

source image: mars.nasa.gov/mars2020/mul...

Image Credit: #NASA / #JPL-Caltech / #ASU / Jackie Branc
Mars Perseverance Sol 1678: Right Mastcam-Z Camera / enhanced. NASA's Mars Perseverance rover acquired this image using its Right Mastcam-Z camera. Mastcam-Z is a pair of cameras located high on the rover's mast. Nov. 8, 2025 (Sol 1678), 12:28:20 source image: https://mars.nasa.gov/mars2020/multimedia/raw-images/ZR0_1678_0815903959_928EBY_N0802956ZCAM09763_1100LMJ Image Credit: NASA/JPL-Caltech/ASU/Jackie Branc
November 11, 2025 at 9:34 AM
Reposted by Daniel Pomarède
physgal.bsky.social
My paternal grandfather was nearly killed in WWI when he was a sailor on the HMS Marlborough. Luckily for me, he survived his ship being torpedoed during the Battle of Jutland. #RemembranceDay #VeteransDay
Wedding photo of my paternal grandparents. My grandpa is wearing his naval uniform. My grandma (we called her Nanny) is wearing a white dress and brimmed hat.
November 11, 2025 at 4:48 AM
Reposted by Daniel Pomarède
sciencesetavenir.bsky.social
Deux cavités inconnues détectées dans la pyramide de Mykérinos
👉 https://l.sciencesetavenir.fr/eW2
November 11, 2025 at 7:08 AM
Reposted by Daniel Pomarède
nataliajagielska.bsky.social
Did you know. That the meme-explosion that was the wooden model of Sacabambaspis (an Ordovician jawless fish) held at a Museum in Helsinki, was created by a pioneering Estonian fish paleontologist and palaeoartist, Elga Mark-Kurik. 🧵
Valentina Karatajute-Talimaa and Elga Mark-Kurik on Kreuzritter lake (Kryzhiuochiu ezheras), under an umbrella, north of Vilnius,Lithuania, 1977 (photo H.-P. Schultze). Model of sacabambaspis helsinki
November 11, 2025 at 4:08 AM
Reposted by Daniel Pomarède
knauazpubradio.bsky.social
Flagstaff’s Lowell Observatory plans to cut nearly all its research funding and reduce the number of paid science staff to just two positions next year.
Lowell Observatory slashes research funding in the midst of financial struggle
Flagstaff’s Lowell Observatory plans to cut nearly all its research funding and reduce the number of paid science staff to just two positions next year.
buff.ly
November 10, 2025 at 7:00 PM
Reposted by Daniel Pomarède
martian-observer.art
NASA Mars Perseverance Rover at Jezero crater

Part of the rover's view from Jezero crater rim on Sol 1,675 (5th November, 2025)

MastCam-Z (left) ZCAM09762 (crop)
Site 80 / 1644
📷 Credits: NASA / JPL-Caltech / ASU / MSSS / Martian-Observer
NASA Mars Perseverance Rover's view from Jezero crater rim on Sol 1,675 (5th November, 2025)
Part of the rover's view from Jezero crater rim on Sol 1,675 (5th November, 2025) MastCam-Z (left) ZCAM09762 (crop) Site 80 / 1644 📷 Credits: NASA / JPL-Caltech / ASU / MSSS / Martian-Observer
www.flickr.com
November 10, 2025 at 12:22 PM
Reposted by Daniel Pomarède
pomarede.bsky.social
Astronomy Picture of the Day

Micro Moon vs. Super Moon

Credit: Şenol Şanlı www.instagram.com/snlsanli

www.star.ucl.ac.uk/~apod/apod/a...

#APOD 🧪🔭
Two views of the full moon: at left captured near apogee when the Earth-Moon relative distance is the greatest, so that the moon appears smaller in the sky, at right captured near perigee when the moon is closest to Earth, so it appears larger. Title reads "2025 Full Moon". The so-called Micro Full Moon pictured on the left was captured on April 13, 2025, when the Earth-Moon distance was 406,006 kilometers. The so-called Super Full Moon pictured on the right was captured on November 5, 2025, when the Earth-Moon distance was 356,979 kilometers.
November 10, 2025 at 2:24 PM
Reposted by Daniel Pomarède
iap.fr
www.sorbonne-universite.fr/actualites/l...
Le projet GRAND capte ses premiers rayons cosmiques dans le désert de Gobi
Porté par Kumiko Kotera, directrice de l’Institut d’astrophysique de Paris, et Olivier Martineau, enseignant-chercheur au Laboratoire de physique nucléaire et hautes énergies (LPNHE), le projet intern...
www.sorbonne-universite.fr
November 10, 2025 at 3:07 PM
Reposted by Daniel Pomarède
geoshanz.bsky.social
🚨New Paper: "History of the Barents Sea Ice Sheet, MIS 11 to present" - Cofield & Darby (2025)

Utilized ice rafted debris + Fe-grains from a deep-sea Arctic sediment core to reconstruct ice movement/ timing for Barents Sea Ice Sheet through MIS 11 (~440 ka).

*Proxy explanation in🧵

(1/n) 🌊🧪
History of the Barents Sea Ice Sheet, MIS 11 to present
Understanding the history of large Arctic ice sheets is important in knowing the possibilities for future climate change and its impact on existing ic…
www.sciencedirect.com
November 10, 2025 at 2:34 PM
pomarede.bsky.social
Astronomy Picture of the Day

Micro Moon vs. Super Moon

Credit: Şenol Şanlı www.instagram.com/snlsanli

www.star.ucl.ac.uk/~apod/apod/a...

#APOD 🧪🔭
Two views of the full moon: at left captured near apogee when the Earth-Moon relative distance is the greatest, so that the moon appears smaller in the sky, at right captured near perigee when the moon is closest to Earth, so it appears larger. Title reads "2025 Full Moon". The so-called Micro Full Moon pictured on the left was captured on April 13, 2025, when the Earth-Moon distance was 406,006 kilometers. The so-called Super Full Moon pictured on the right was captured on November 5, 2025, when the Earth-Moon distance was 356,979 kilometers.
November 10, 2025 at 2:24 PM
Reposted by Daniel Pomarède
clementpiel.bsky.social
La galaxie d’Andromède (M31) et ses deux galaxies satellites M32 et M110, dans la constellation d’Andromède. Image composite combinant vues couleur et vues avec un filtre spécifique à l’émission Ha de l’hydrogène.

Détails techniques: app.astrobin.com/i/npf0wr

#astrophotography
La galaxie d’Andromède, au centre, occupe une large partie de l’image. Sa forme est elliptique, et juste en dessus et en dessous se trouvent 2 petites galaxies satellites. La couleur globale de la galaxie varie du blanc légèrement bleuté au blanc légèrement rouge, avec des détails brun clair. Des détails de la galaxie sont identifiables : les bras spiraux de couleur brune, et des petites nébuleuses en rouge.
November 10, 2025 at 10:12 AM
pomarede.bsky.social
Leaked NASA Manifesto Hints at Isaacman’s Vision for Science 🧪🔭

www.aip.org/fyi/leaked-n... @aip.bsky.social
Leaked NASA Manifesto Hints at Isaacman’s Vision for Science
Jared Isaacman has been renominated to lead NASA, and a document outlining his vision for the agency has been leaked to the press.
www.aip.org
November 10, 2025 at 8:56 AM
Reposted by Daniel Pomarède
mapperwocky.bsky.social
New abrasion came out nice and even. Here are some WATSON images I slightly adjusted with my phone.
Closeup of new abrasion spot on Mars by the Perseverance rover. Context image of new abrasion spot on Mars by the Perseverance rover.
November 10, 2025 at 6:41 AM
Reposted by Daniel Pomarède
martiandiaries.bsky.social
It’s so incredible to see the surface of another planet in this detail 👇🔴 #Mars
pomarede.bsky.social Daniel Pomarède @pomarede.bsky.social · 3d
Freshly crushed rocks, captured in Stereo3D by Curiosity with her MAHLI Mars Hand Lens Imager

To go 3D: eyes' lines of sight parallel, left image for left eye, right image for right eye.

#Mars Nov. 6, 2025 - Sol 4711 🧪🔭
Credits: NASA/JPL-Caltech/MSSS
A dual left/right stereoscopic pair of ochre-toned photographies capturing Martian rocks. This dual image is intended to be used to obtain a Stereo3D rendition of the scene through parallel viewing, and not cross-eyed viewing. The rocks have an ochre color, with white patches exposed when the rocks were crushed by the passage of the rover wheels.
November 10, 2025 at 6:06 AM
Reposted by Daniel Pomarède
pomarede.bsky.social
Martian Memories

The Alagnak ridge captured by Perseverance - Sol 629 (November 26, 2022)

Credits: NASA/JPL-Caltech/ASU/MSSS

mastcamz.asu.edu/galleries/so... #Mars 🧪🔭
A red toned mosaic capturing a Martian landscape. The central subject is the Alagnak outcrop, overlooking the vast expanses of Jezero Crater.
November 9, 2025 at 5:42 PM
Reposted by Daniel Pomarède
palomarskies.bsky.social
I was up early this morning to catch two comets. The first was C/2025 K1 (ATLAS), a nice telescopic comet currently in Leo. The 2nd was the not-a-spaceship interstellar comet 3I/ATLAS. It's the fuzzy dot at the center which I caught just over the trees as twilight was coming on. 🔭
A telescopic image of stars. Near the center is a comet with its tail extending upwards. A telescopic image showing stars and a small, fuzzy comet at center.
November 9, 2025 at 8:10 PM
pomarede.bsky.social
Martian Memories

The Alagnak ridge captured by Perseverance - Sol 629 (November 26, 2022)

Credits: NASA/JPL-Caltech/ASU/MSSS

mastcamz.asu.edu/galleries/so... #Mars 🧪🔭
A red toned mosaic capturing a Martian landscape. The central subject is the Alagnak outcrop, overlooking the vast expanses of Jezero Crater.
November 9, 2025 at 5:42 PM
Reposted by Daniel Pomarède
rkinnett.bsky.social
New Glenn is fueling up for launch at 2:45 pm EST (11:45 an PST). 🥜 🍀 🤞 🚀
cmdr-hadfield.bsky.social Chris Hadfield @cmdr-hadfield.bsky.social · 2d
Mars launch today - good luck sticking the barge landing for the first time, Blue Origin!
watch live stream: youtube.com/live/WUuH9fw...
(images: Blue Origin)
November 9, 2025 at 5:19 PM
pomarede.bsky.social
The new issue of Worlds of IF hits in a few days. This is going to be the third issue since the relaunch by Starship Sloane Publishing of this iconic science fiction magazine. It will feature a new text by yours truly!

worldsofifmagazine.com
November 9, 2025 at 11:23 AM