Daniel Pomarède
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pomarede.bsky.social
Daniel Pomarède
@pomarede.bsky.social
7.4K followers 270 following 2.8K 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
katrinamillerphd.bsky.social
www.nytimes.com/interactive/...
The Year in Pictures 2025 (Gift Article)
Reflections of Turbulent Times
www.nytimes.com
December 26, 2025 at 4:46 PM
Reposted by Daniel Pomarède
bobeggleton.bsky.social
Cover art to a new Silverberg book collection !
December 25, 2025 at 11:05 PM
Reposted by Daniel Pomarède
jackiebranc.site
🔴 #Mars #Perseverance Sol 1717: Right #Mastcam-Z Camera / enhanced

Dec. 18, 2025 (Sol 1717), 14:07:04

source image: Mars_Perseverance_ZR0_1717_0819372257_348EBY_N0830000ZCAM09802_1100LMJ

Image Credit: #NASA / #JPL-Caltech / #ASU / Jackie Branc

#RedPlanet
Mars Perseverance Sol 1717: 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. Dec. 18, 2025 (Sol 1717), 14:07:04 source image: Mars_Perseverance_ZR0_1717_0819372257_348EBY_N0830000ZCAM09802_1100LMJ Image Credit: NASA/JPL-Caltech/ASU/Jackie Branc
December 25, 2025 at 2:43 PM
Reposted by Daniel Pomarède
science.esa.int
Happy Holidays! 🎄

On the first day of Christmas, Webb sent to us
A glittering view 
The largest star-forming cloud in our galaxy 🌟

Discover the full image here 👉 https://www.esa.int/Science_Exploration/Space_Science/Webb/Webb_explores_largest_star-forming_cloud_in_our_galaxy

🔭
This Webb image is presented as a bell shape surrounded by Christmas tree branches. The Webb image shows a wide view of a region of space filled with stars and clumps of orange clouds. Credit: NASA, ESA, CSA, STScI, A. Ginsburg (University of Florida), N. Budaiev (University of Florida), T. Yoo (University of Florida). Image processing: A. Pagan (STScI)
December 25, 2025 at 4:02 PM
Reposted by Daniel Pomarède
captmarkkelly.bsky.social
On Christmas Eve 1968, in Lunar orbit, the Apollo 8 crew took this photo: “Earthrise."

I'll never forget how inspiring the Apollo missions were to my brother and me as kids. They showed us what our country and humanity can accomplish when we work together toward a common goal.
December 24, 2025 at 10:22 PM
Reposted by Daniel Pomarède
coreyspowell.bsky.social
"What is the point of space travel?"

Folks out there have questions. I have answers (or some strong thoughts, at least). 🧪

www.quora.com/What-is-the-...
Artist's concept of Dragonfly crossing the skies of Titan to collect data.
December 23, 2025 at 7:32 PM
Reposted by Daniel Pomarède
martian-observer.art
Checking in with Abe after 13+ years with Nasa Curiosity rover at Gale crater on Mars
Mars Guy Episode 246 / 21st Dec, 2025
Checking in with Abe after 13+ years on Mars
YouTube video by Mars Guy
www.youtube.com
December 21, 2025 at 6:14 PM
pomarede.bsky.social
NASA Works MAVEN Spacecraft Issue Ahead of Solar Conjunction

science.nasa.gov/blogs/maven/...

#Mars #MAVEN 🧪🔭
December 23, 2025 at 6:07 PM
Reposted by Daniel Pomarède
mars-cat.bsky.social
Curiosity MSL Blog, Sols 4750-4762: See You on the Other Side of the Sun
Written by Lucy Thompson, Planetary Scientist and APXS team member, University of New Brunswick, Canada
Earth planning date: Monday, Dec. 22, 2025

science.nasa.gov/blog/curiosi...
Curiosity Blog, Sols 4750-4762: See You on the Other Side of the Sun - NASA Science
Written by Lucy Thompson, Planetary Scientist and APXS team member, University of New Brunswick, Canada
science.nasa.gov
December 23, 2025 at 5:12 PM
Reposted by Daniel Pomarède
mars-cat.bsky.social
Curiosity MSL_sol 4752: navcam mosaic and mastcam workpace mosaic - parking location for the holiday season and across conjunction (which lasts until Jan 22nd)

Credits: NASA/JPL-Caltech/MSSS, fredk and @paulhammond1.bsky.social
December 23, 2025 at 5:10 PM
Reposted by Daniel Pomarède
mars-cat.bsky.social
Curiosity MSL_sol 4752: maps and rover data - parking location for the holiday season and across conjunction (which lasts until Jan 22nd)
Credits: NASA/JPL-Caltech/MSSS, fredk and @paulhammond1.bsky.social
December 23, 2025 at 5:09 PM
Reposted by Daniel Pomarède
mmylova.bsky.social
Some reading for the holidays! It is finally out: Gauging Open EFTs from the top down with Greg Kaplanek (Syracuse U.) and Andrew Tolley (Imperial) arxiv.org/abs/2512.17089 Long story short: we present explicit top-down calculations of Open EFTs for gauged degrees of freedom 1/7
Gauging Open EFTs from the top down
We present explicit top-down calculations of Open EFTs for gauged degrees of freedom with a focus on the effects of gauge fixing. Starting from the in-in contour with two copies of the action, we inte...
arxiv.org
December 23, 2025 at 3:53 PM
Reposted by Daniel Pomarède
transmartian.bsky.social
Yesterday, we had our last planning day with Curiosity for almost a month before she takes an extended holiday behind the sun
science.nasa.gov/blog/curiosi...
#PlanetaryScience
Curiosity Blog, Sols 4750-4762: See You on the Other Side of the Sun - NASA Science
Written by Lucy Thompson, Planetary Scientist and APXS team member, University of New Brunswick, Canada
science.nasa.gov
December 23, 2025 at 2:01 PM
Reposted by Daniel Pomarède
science.esa.int
This cosmic butterfly is IRAS 23077+6707, the largest planet-forming disc seen around a young star yet! 

Hubble has revealed it to be an unusually chaotic specimen, with wisps of material flying far beyond the disc 👉 https://esahubble.org/images/opo2606/

🔭
Near the center is an object that resembles an edge-on view of a hamburger. There is a diagonal dark strip (the meat patty) of dust, running from 1 o’clock to 7 o’clock, that obscures a central star. Curving away from either side of the dark strip are glowing white clouds (the buns) where dust is reflecting starlight. Credit: NASA, ESA, STScI, K. Monsch (CfA). Image processing: J. DePasquale (STScI).
December 23, 2025 at 2:02 PM
pomarede.bsky.social
Holiday Collection: Cosmic Holiday Greetings From NASA's Chandra X-ray Observatory

Four new winter-themed images that contain X-rays from Chandra and data from other telescopes have been released. 🔭🧪

chandra.harvard.edu/photo/2025/h...
Four colorful composite images, each evoking an aspect of winter and the holiday season. The first image, at upper left, features a pair of colliding galaxies that resembles a snowman in optical light from Hubble when oriented vertically. The two galaxies, NGC 4782 and NGC 4783, appear as hazy white balls with solid white cores. Linking the two galaxies is a bridge of hot gas in X-ray light from Chandra depicted here as a string of fuzzy neon purple balls. The string of gas loosely zigzags back and forth between the two galaxies, like a cozy scarf worn by a snowman. The second image, at upper right, strongly resembles a golden Christmas tree bedecked with twinkling lights. The tree is actually NGC 2264, a relatively young nebula where new stars are forming. The tree's branches, which sweep back and forth in a roughly conical shape, are golden clouds of dust and gas, all from optical light captured by an astrophotographer. Tucked into these branches are colorful lights and glowing baubles in X-rays from Chandra and XMM-Newton; baby stars growing inside the nebula. At lower left is a winter scene fit for a holiday greeting card. Above what appears to be a fantastical snowy mountainscape, is a brilliant blue sky packed with colorful lights. The golden mountainscape is in fact part of the nebula NGC 6357, as captured by JWST. The green, red, and golden lights in the blue sky above are bursts of high-energy X-rays from active stars, detected by Chandra. The last image at lower right is a nebula which calls to mind the first gift in the Christmas carol 'The Twelve Days of Christmas'. Here, the wispy burnt orange nebula, M78, forms a tree, with a vertical trunk near the center of the image in infrared and optical light from Euclid. The tree's bushy branches reach toward our upper left, and its tail of roots drifts toward our lower right.
December 23, 2025 at 10:40 AM
Reposted by Daniel Pomarède
ddavisspaceart.bsky.social
Seven years from tonight a small asteroid might make a new 1.3 kilometer wide crater on the Moon. Of course the refined path of 22024 YR4 may well rule this out between now and then, but for a couple years there can be a bit of photogenic suspense. Rendered in Electric Image Animator.

#Sciart
This frame from an ongoing animation project shows the plume from the impact of the approximately 60 meter wide asteroid 2024 YR4 which will pass nearest the Moon, with a current 4 percent chance of such an impact, about 15:20 UT December 22, 2032. This is a 3D render of the Moon as it will be lit then with the impact having just happened, with the ejecta cone spreading from the impact site. Some of this plume would likely make it to Earth and cause an intense meteor shower. This is a frame of my animation of the passage of Asteroid 2024 YR4 through the Earth/Moon system on December 22, 2032. This is a 3D asteroid landscape I modeled using hand painted Digital Elevation maps with many separate rock models added. For a time at the beginning of this year Earth was within the 'uncertainty zone' of the asteroid path, and I was pondering what part of Earth to show getting pummeled. Then the path was better defined, sparing Earth from this one. This scene shows Earth at about the closest approach as the small asteroid passes it on the way to the vicinity of the Moon.
December 23, 2025 at 6:29 AM
Reposted by Daniel Pomarède
pomarede.bsky.social
An update to the huge Sol 1717 mosaic currently being transferred from Perseverance. More to come.

🔍 zoomhub.net/OVqq9

#Mars 🧪🔭

Credits: NASA/JPL-Caltech/ASU
An ochre toned mosaic of images capturing a Martian landscape, with some elements of the Mars rover Perseverance in the foreground.
December 22, 2025 at 6:37 PM
Reposted by Daniel Pomarède
martian-observer.art
Looks like one of Perseverance rover's Christmas tasks is "watch those rocks and bits of grit and see if they move"
Sol 1720 = 22nd December, 2025
areobrowser.com#/mode=persev...
aerobrowser website showing images sent back from Mars over the past week, filtered by mastcam-z. The same set of shots of a patch of ground appears on 3 consecutive sols from sol 1718 (20th December, 2025)
December 22, 2025 at 2:46 PM
Reposted by Daniel Pomarède
landru79.bsky.social
#CASSINI ORBITER #SATURN MISSION

Target: #Tethys
Time: 2005-10-13
Body Center Distance (km): 644184.003
Distance to Ring Intercept (km): 714451.634
Camera Narrow Angle Filter: Ir1 Grn Uv3
Finest Observed Resolution (km/pixel): 3.85615

opus.pds-rings.seti.org/opus/#/COISS...

NASA/JPL/j. Roger
December 22, 2025 at 7:57 PM
pomarede.bsky.social
An update to the huge Sol 1717 mosaic currently being transferred from Perseverance. More to come.

🔍 zoomhub.net/OVqq9

#Mars 🧪🔭

Credits: NASA/JPL-Caltech/ASU
An ochre toned mosaic of images capturing a Martian landscape, with some elements of the Mars rover Perseverance in the foreground.
December 22, 2025 at 6:37 PM
Reposted by Daniel Pomarède
langinspace.bsky.social
Une enquête que j'avais timidement entamée il y déjà 4 ans devant le manque de nouvelles de Breakthrough Starshot. Il a quelques mois Scientific American a confirmé nos soupçons... En dépit du show hollywoodien des débuts, le voyage interstellaire a tourné court.
cieletespace.bsky.social Ciel & Espace @cieletespace.bsky.social · 5d
Cela faisait plusieurs années qu'on en entendait plus parler, le projet "Breakthrough starshot" s'est éteint sans bruit ni grande prouesse technologique... ❌ Sur les 100 millions d'euros promis par le milliardaire Yuri Milner, moins de 5 auraient réellement servi à financer la recherche.
👇👇 A lire
Le projet de voyage interstellaire Breakthrough Starshot a cessé sans bruit ni exploit
Breaktrough Starshot promettait de concevoir les premières sondes spatiales à destination d’une autre étoile que le Soleil. Mais après les annonces retentissantes, l’ambition du milliardaire Yuri Milner s’est vite essoufflée. Sur les 100 millions de dollars promis au projet de recherche, moins de 5 auraient été dépensés.
www.cieletespace.fr
December 22, 2025 at 2:28 PM
Reposted by Daniel Pomarède
science.esa.int
Hubble has snapped a seemingly close pair of galaxies, Arp 4 – but looks can be deceiving!

Find out why here 👉 https://esahubble.org/images/potw2551a/

🔭
This image shows two galaxies side by side. The galaxy on the top left is smaller in size, and appears as a bright glowing spiral with clearly-defined arms. A larger blue galaxy dominates the full right field of the image. This galaxy is more irregularly shaped, with a glowing central bar, and varying regions of concentrated hues of blue. The background is black with various stars and galaxies in the distance.
December 22, 2025 at 8:02 AM
Reposted by Daniel Pomarède
jackiebranc.site
🔴 #Mars #Perseverance Sol 1717: Right #Mastcam-Z Camera / enhanced

Dec. 18, 2025 (Sol 1717), 11:33:01

source image: Mars_Perseverance_ZR0_1717_0819362763_724EBY_N0830000ZCAM09798_1100LMJ

Image Credit: #NASA / #JPL-Caltech / #ASU / Jackie Branc

#RedPlanet
Mars Perseverance Sol 1717: 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. Dec. 18, 2025 (Sol 1717), 11:33:01 source image: Mars_Perseverance_ZR0_1717_0819362763_724EBY_N0830000ZCAM09798_1100LMJ Image Credit: NASA/JPL-Caltech/ASU/Jackie Branc
December 22, 2025 at 2:10 PM
Reposted by Daniel Pomarède
iap.fr
C’est avec une très grande tristesse que nous vous annonçons le décès de notre collègue Yannick Mellier. Yannick était un astronome éminent, figure internationale de la cosmologie moderne, fondateur et directeur de TERAPIX de 1997 à 2011, Consortium Lead de la mission spatiale Euclid depuis 2011.
Une photographie en noir et blanc de Yannick Mellier, prise en 2009 par Jean Mouette, à l'occasion de sa médaille d'argent du CNRS.
December 22, 2025 at 10:12 AM
Reposted by Daniel Pomarède
dsfpspacefl1ght.bsky.social
Proud of my city
December 22, 2025 at 3:07 AM