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Hubble vs James Webb : Duel d’Œils sur l’Univers Découvrez les différences clés entre les télescopes Hubble et James Webb : technologies, observations et impacts en astronomie moderne.

Webb vs Hubble : l’un capture le visible/UV, l’autre scrute l’infrarouge lointain. Deux visions, deux époques, une même quête cosmique.
www.mopnantes.fr/hubble-vs-ja...
#Space #Science #Innovation #Astrophysics #JWST #Hubble #InfraredVision #CosmicExploration

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Astronomie : Hubble vs James Webb, que peut-on comparer ? La comparaison entre le **télescope spatial** **Hubble** et le **James Webb** soulève des questions techniques et scientifiques précises. Les enjeux portent sur la **résolution d’image** , l’**infrarouge** et la capacité d’observation à très grande distance. Comprendre ces différences permet d’apprécier les apports complémentaires de chaque instrument. Ces différences essentielles éclairent immédiatement les points clés à retenir. ## A retenir : * Capacité infrarouge supérieure, détection des galaxies très lointaines * Miroir de grande taille, collecte lumineuse nettement augmentée * Résolution d’image optimisée dans l’infrarouge proche et moyen * Complémentarité Hubble visible et ultraviolet, Webb infrarouge profond ## Comparaison technique : télescope spatial Hubble vs James Webb Après ces repères, la comparaison technique met en lumière des différences structurelles évidentes. Le **James Webb** privilégie un grand miroir segmenté pour capter plus de lumière. Le **Hubble** conserve une conception monolithique efficace pour le visible et l’ultraviolet. La comparaison suivante résume les spécificités mesurables entre les deux engins. Selon la NASA, ces éléments expliquent la capacité d’observation différente des deux instruments. Caractéristiques techniques clés : * Miroir : 2,4 mètres versus 6,5 mètres * Lancement : 1990 pour Hubble, 2021 pour Webb * Orbite : basse terrestre contre point L2 à 1,5 million de kilomètres * Longueurs d’onde : UV-visible-IR versus proche et moyen infrarouge Caractéristique | Hubble | James Webb ---|---|--- Diamètre du miroir | 2,4 m | 6,5 m Année de lancement | 1990 | 2021 Orbite | Orbite terrestre basse | Halo autour de L2 Bandes principales | Ultraviolet, visible, proche infrarouge | Proche et moyen infrarouge > « J’ai travaillé sur l’optique, et voir la collecte lumineuse de Webb change la donne pour les objets faibles » > > Claire B. Ces différences matérielles influent directement sur la **résolution d’image** et la sensibilité en infrarouge. L’étape suivante est d’examiner précisément l’impact sur l’**observation astronomique** et les images. ## Observation astronomique : résolution d’image et profondeur Voyant l’impact matériel, l’attention se porte sur la qualité des images et la profondeur d’observation. Selon l’ESA, l’infrarouge permet de percer la poussière et d’identifier des étoiles en formation invisibles auparavant. Aspects d’observation clés : * Temps d’exposition réduit pour champs profonds avec Webb * Visibilité UV et détails fins conservés par Hubble * Capacité à détecter galaxies à très haut décalage spectral * Complémentarité pour études multispectrales ### Résolution d’image et exemples : SMACS 0723 Cet exemple illustre comment la **résolution d’image** change la perception des champs profonds. Selon la NASA, l’image SMACS 0723 prise par Webb révèle des milliers de galaxies et des détails inaccessibles à Hubble. La durée d’exposition pour SMACS 0723 a été bien moindre que pour les équivalents de Hubble, ce qui montre un gain d’efficacité notable. Ce gain ouvre des perspectives pour multiplier les champs profonds étudiés sur le ciel. ### Nébuleuses et formation stellaire : Piliers de la création En mettant l’accent sur le visible et l’infrarouge, on voit des phases de formation stellaire inédites dans les piliers. Selon l’AFP, Webb a mis en évidence des protoétoiles cachées derrière la poussière dans cette région. Observations nébuleuses : * Détection d’étoiles en formation cachées derrière la poussière * Analyse des masses de gaz et poussières par imagerie infrarouge * Identification d’états évolutifs différents pour jeunes étoiles > « J’ai observé la différence visuelle, et Webb a révélé des protostars que je n’attendais pas » > > Marc N. Ces exemples illustrent la complémentarité des approches spectrales pour l’**exploration cosmique**. Le passage suivant examine la spectroscopie et les usages scientifiques plus pointus. ## Spectroscopie et exploration cosmique : ce que chaque télescope apporte Suite à l’observation image, la spectroscopie permet de caractériser la composition et l’âge des objets lointains. Selon le STScI, la capacité spectroscopique de Webb ouvre la porte à la mesure précise des éléments chimiques dans de jeunes galaxies. Applications scientifiques générales : * Études des abondances chimiques dans les galaxies lointaines * Caractérisation d’atmosphères exoplanétaires par spectroscopie * Analyse des poussières interstellaires et des processus de formation stellaire ### Techniques de spectroscopie : NIRSpec et instruments complémentaires Ce point relie la capacité spectrale aux découvertes de compositions et de températures. Selon la NASA, NIRSpec a permis d’identifier des signatures moléculaires dans des objets très lointains. Le tableau suivant compare les usages spectroscopiques selon les domaines scientifiques. Il illustre les forces de chacun pour des programmes précis d’observation et d’analyse. Application | Hubble | James Webb ---|---|--- Formation stellaire | Imagerie visible détaillée | Sonde infrarouge des protostars Galaxies lointaines | Identification morphologique | Spectroscopie des populations stellaires Exoplanètes | Transit en photométrie | Spectroscopie d’atmosphères Système solaire | Cartographie visible | Étude thermique et composition > « Mon équipe a utilisé les spectres Webb pour réviser l’âge estimé d’une étoile en formation » > > Anaïs P. ### Exploration planétaire et contributions récentes : Jupiter et Neptune En complément des galaxies, Webb observe aussi des planètes géantes et leurs atmosphères depuis l’infrarouge. Ces images permettent d’étudier les aurores joviennes et les anneaux de Neptune sous un angle chimique et thermique. Un dernier témoignage : > « L’image de Jupiter a changé notre approche pour modéliser les dynamiques atmosphériques » > > Paul M. Ces éléments montrent que **Hubble** et **James Webb** forment un couple d’observation complémentaire et puissant pour l’**exploration cosmique**. L’usage concerté des deux instruments continuera d’affiner nos modèles astrophysiques. Source : Caroline Félix, « Là où naissent les étoiles : le télescope ultra puissant James Webb, a capturé et publié ce mardi une image des « Piliers de la création » », AFP, 20 octobre 2022.

Webb vs Hubble : l’un capture le visible/UV, l’autre scrute l’infrarouge lointain. Deux visions, deux époques, une même quête cosmique.
https://www.mopnantes.fr/hubble-vs-james-webb/
#Space #Science #Innovation #Astrophysics #JWST #Hubble #InfraredVision #CosmicExploration

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FFXIV Cosmic Exploration: Oizys - Memory's Orbit
FFXIV Cosmic Exploration: Oizys - Memory's Orbit YouTube video by bluezhift

I had some goofy AF fun voicing these last story quests on Oizys! I'm a little self conscious of my voice, but I felt good about the goofiness, LOL! #ffxiv #ff14 #CosmicExploration youtu.be/zaAu1YruWp8

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Margot, stepping off the ship: "By the Twelve! What an incredible civilization!"
Largo, stepping off behind her, contemplating which weapon to draw first: "And why, exactly, is such a beautiful city lying here uninhabited?"
#FFXIV #CosmicExploration

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Science Officer Losira happily sits with her Loporrit friend on the Oizys base rooftop. The newly completed towers soaring skyward behind them.

Science Officer Losira happily sits with her Loporrit friend on the Oizys base rooftop. The newly completed towers soaring skyward behind them.

Close-up of Science Officer Losira happily siting with her Loporrit friend on the Oizys base rooftop. The newly completed towers soaring skyward behind them.

Close-up of Science Officer Losira happily siting with her Loporrit friend on the Oizys base rooftop. The newly completed towers soaring skyward behind them.

The Final Cosmic Exploration Project FATE on Oizys was successful on the first attempt on Hyperion! Plenty of players came to participate! Thank you everyone who came out to help! #ffxiv #ff14 #CosmicExploration

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Image of Losira and a Loporrit sitting atop the base, showing FATE scheduled for 3/9 23:50

Image of Losira and a Loporrit sitting atop the base, showing FATE scheduled for 3/9 23:50

Final Oizys Project Upgrade FATE POPS at 11:50pm Central Time! 27 minutes to go on Hyperion! #ffxiv #CosmicExploration

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Science Officer Losira reviews data on her tomestone pad standing at the Cosmoport on Oizys. The Galactic Way starship sits on the pad behind her. A glowing blue orb of rock and water hangs in the dark sky above them.

Science Officer Losira reviews data on her tomestone pad standing at the Cosmoport on Oizys. The Galactic Way starship sits on the pad behind her. A glowing blue orb of rock and water hangs in the dark sky above them.

Science Officer Losira reviews data on her tomestone pad standing at the Cosmoport on Oizys. The Galactic Way starship sits on the pad behind her. The gleam of the rising sun is reflected off the ship under a blue sky.

Science Officer Losira reviews data on her tomestone pad standing at the Cosmoport on Oizys. The Galactic Way starship sits on the pad behind her. The gleam of the rising sun is reflected off the ship under a blue sky.

Sometimes it saddens me that video games are the closest I'm ever going to get to traveling between the stars. #ffxiv #ff14 #CosmicExploration

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Behind below view of Science Officer Losira reclining on a Cosmic Exploration motor cycle on Oizys.

Behind below view of Science Officer Losira reclining on a Cosmic Exploration motor cycle on Oizys.

Front view of Science Officer Losira reclining on a Cosmic Exploration motor cycle on Oizys. Losira is a brown skinned Miqo'te woman with blue hair dressed in a skirted Cosmic Exploration Initiative uniform.

Front view of Science Officer Losira reclining on a Cosmic Exploration motor cycle on Oizys. Losira is a brown skinned Miqo'te woman with blue hair dressed in a skirted Cosmic Exploration Initiative uniform.

Front close-up view of Science Officer Losira reclining on a Cosmic Exploration motor cycle on Oizys. Losira is a brown skinned Miqo'te woman with blue hair dressed in a skirted Cosmic Exploration Initiative uniform.

Front close-up view of Science Officer Losira reclining on a Cosmic Exploration motor cycle on Oizys. Losira is a brown skinned Miqo'te woman with blue hair dressed in a skirted Cosmic Exploration Initiative uniform.

Losira chillin' on Oizys, trying not to think too much about gravitational anomalies that could tear you limb from limb. #ffxiv #ff14 #CosmicExploration

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Are they planning on summoning the Old Gods?? #FFXIV #CosmicExploration

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FFXIV Cosmic Exploration: Oizys Deep Echoes FATE on Hyperion - PowerWash Simulator XIV-2
FFXIV Cosmic Exploration: Oizys Deep Echoes FATE on Hyperion - PowerWash Simulator XIV-2 YouTube video by bluezhift

Woke up this morning and it was time for Cosmic Exploration: PowerWash Simulator XIV-2 apparently! We failed the first attempt for lack of players, but Hyperion stormed back successfully with more players and, ahem, the Echo! #ffxiv #CosmicExploration youtu.be/11i0M15aZt4?...

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Have you met Tinyway?

#ffxiv #cosmicexploration #lalafell

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Oizys likes to have odd little gravity fluctuations that kept fracturing my old suit visor, so a bit of an upgrade to the suit. The new helmet is better at keeping rocks coming back down after a float and bonking my skull!

#lalafell #cosmicexploration

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Ex+ voyager relic survey 1 mission
Ex+ voyager relic survey 1 mission YouTube video by Zane Lionhart

youtube.com/shorts/6oZ7j... #ffxiv #shorts #oizys #cosmicexploration #fisher

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FFXIV Cosmic Exploration: Oizys Emerald Echoes Restoration FATE on Hyperion - Not A Cult
FFXIV Cosmic Exploration: Oizys Emerald Echoes Restoration FATE on Hyperion - Not A Cult YouTube video by bluezhift

Video of last night's successful Cosmic Exploration Emerald Echoes Restoration FATE on Hyperion! Hyperion turned out and WE DID IT! Thank you to everyone who came! #ffxiv #ff14 #CosmicExploration youtu.be/LAIbD-c_Qwo

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Finally Free, all tools are complete for the time being...
#FFXIV #miqote #FFXIVScreenshots #ffxivsnaps #AetherDC #Midgardsormr #cosmicexploration

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Science Officer Losira stands before the now opened door of the Echoes Emerald site. Is it a Secret Tunnel?

Science Officer Losira stands before the now opened door of the Echoes Emerald site. Is it a Secret Tunnel?

Just completed the Emerald Echoes Excavation FATE on Hyperion! We failed our first attempt, but with the power of the Echo, we succeeded the second time! I like to call this our SECRET TUNNEL! #ffxiv #CosmicExploration

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Screenshot from FFXIV of a male Viera crafting while a small bunny-eared drone latches onto his head.

The actual description for Droningway from the minion journal: "Modified to serve as an autonomous search and rescue unit, this transport drone is equipped with a reinforced robotic hand that takes hold of lost Loporrits for secure conveyance back to base. When no one is missing, it is programmed to pass the time by tracking random individuals."

Screenshot from FFXIV of a male Viera crafting while a small bunny-eared drone latches onto his head. The actual description for Droningway from the minion journal: "Modified to serve as an autonomous search and rescue unit, this transport drone is equipped with a reinforced robotic hand that takes hold of lost Loporrits for secure conveyance back to base. When no one is missing, it is programmed to pass the time by tracking random individuals."

My robot child out here trying to drag the wrong kind of bunny back to the moon.

. #ffxiv . #ff14 . #cosmicexploration . #viera .

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One of these days, they're going to make the vending machines properly Lalafell-accessible. Never mind if the Loporitts end up eating all the snacks before anyone else gets some, blacksmithing is hungry work!

#ffxiv #cosmicexploration #blacksmith

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That's STAR CONTRIBUTOR, to you!
#ffxiv #gposers #gpose #achievement #ffxivgpose #cosmicexploration

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Once you see what you saw, take the saw.

#ffxiv #lalafell #carpenter #cosmicexploration

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A picture of my female midlander character taking a selfie at one of the cosmic exploration locations. She has short dark hair, light skin. She's wearing a dark blue jacket with a black undershirt. She's winking at her tomestone and doing a piece sign. In the background there's a dancing loporrit, accompanied by dancing mammets in hard hats.

A picture of my female midlander character taking a selfie at one of the cosmic exploration locations. She has short dark hair, light skin. She's wearing a dark blue jacket with a black undershirt. She's winking at her tomestone and doing a piece sign. In the background there's a dancing loporrit, accompanied by dancing mammets in hard hats.

A picture of my female midlander character taking a selfie at one of the cosmic exploration locations. She has short dark hair, light skin. She's wearing a dark blue jacket with a black undershirt. She's winking at her tomestone and doing a piece sign. In the background there's a dancing loporrit, accompanied by dancing mammets in hard hats.

A picture of my female midlander character taking a selfie at one of the cosmic exploration locations. She has short dark hair, light skin. She's wearing a dark blue jacket with a black undershirt. She's winking at her tomestone and doing a piece sign. In the background there's a dancing loporrit, accompanied by dancing mammets in hard hats.

Prompt 7 for #febhyurary: Technology!

To the moon and beyond!

#cosmicexploration #endwalker #dawntrail

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[ Empyreum — Ingleside Apartment 17.1.5 ]

Margot Weisshexer, dressed casually in traditional Ala Mhigan poncho, short pants, and sandals, stands in the back corner of her apartment in Ishgard. A gleaming white futuristic kitchen unit has been installed on one wall. Housingway, a loporrit, is introducing her to it as if he's trying to sell it to her: "This modular kitchen unit includes all the conveniences of home, in a single standard unit: cabinetry, washbasin, and a boiler for hot water."

[ Empyreum — Ingleside Apartment 17.1.5 ] Margot Weisshexer, dressed casually in traditional Ala Mhigan poncho, short pants, and sandals, stands in the back corner of her apartment in Ishgard. A gleaming white futuristic kitchen unit has been installed on one wall. Housingway, a loporrit, is introducing her to it as if he's trying to sell it to her: "This modular kitchen unit includes all the conveniences of home, in a single standard unit: cabinetry, washbasin, and a boiler for hot water."

The scene shifts to Margot sitting at a metal table inlaid with some sort of colorful light-emitting ring. On that table is something that looks like a laptop computer, or a tablet with an attached keyboard. "And here," explains Housingway, "is your new comms terminal, furnished by the Cosmic Exploration Initiative."

The scene shifts to Margot sitting at a metal table inlaid with some sort of colorful light-emitting ring. On that table is something that looks like a laptop computer, or a tablet with an attached keyboard. "And here," explains Housingway, "is your new comms terminal, furnished by the Cosmic Exploration Initiative."

Margot seems puzzled. "But," she protests, "I already have a whole pouch of linkpearls, a Crystarian tomephone, a Garlond tomephone,
an Alexandrian headset, and even an exotablet from the Exploration Initiative. What use have I for a terminal?"

Margot seems puzzled. "But," she protests, "I already have a whole pouch of linkpearls, a Crystarian tomephone, a Garlond tomephone, an Alexandrian headset, and even an exotablet from the Exploration Initiative. What use have I for a terminal?"

Housingway raises both arms and gasps in shock. Wide-eyed, they ask breathlessly, "Have you not seen the channel that broadcasts videos of cute cats?!"

Housingway raises both arms and gasps in shock. Wide-eyed, they ask breathlessly, "Have you not seen the channel that broadcasts videos of cute cats?!"

#February2026 07 - Technology

When Margot first agreed to incorporate some of the new inventions from #CosmicExploration into her apartment, she wasn't quite sure what to expect.

#FFXIV #gpose #WoLcomics #Febhyurary #hyur #ForAlaMhigo #Endwalker

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Order 66 is back on the table #ffxiv #cosmicexploration #therabbitshatemeagain

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There are hundreds/thousands of Loporrits, each with their own little hyperfixation. We've seen that they're capable of changing hyperfixations. HOW, AFTER TWO PLANETS, IS THERE NOT ONE NAMED "MAILINGWAY" OBSESSED WITH EXTENDING THE ETHEIRYS POSTAL SYSTEM INTO SPACE.

. #ffxiv . #cosmicexploration .

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Ohhh~

Zesty little cute bunbun drone ✨

#ffxiv #ff14 #finalfantasyxiv #finalfantasy14 #cosmicexploration #gpose #playstation5 #femra #aura #zesty #adorable

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This thing trolls so hard.. and it regrets nothing :’)

But my partner is now on the moon/planets!!! I sold him on the gear/glams >:D

#ffxiv #ff14 #finalfantasy #finalfantasyxiv #finalfantasy14 #gpose #cosmicexploration #cosmicfortune #cosmicmisfortune #ps5

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A post-edited screenshot of Tigh’a, a player character in FFXIV. He is a male Keeper of the Moon Miqo’te, very short and slight in build with fluffy brown hair and long fluffy tail. He is riding on a hover board, looking nervous, in a dramatic landscape of stone ruins and floating rocks and fragments.

A post-edited screenshot of Tigh’a, a player character in FFXIV. He is a male Keeper of the Moon Miqo’te, very short and slight in build with fluffy brown hair and long fluffy tail. He is riding on a hover board, looking nervous, in a dramatic landscape of stone ruins and floating rocks and fragments.

Exploring a strange new star

🐈 #catboytigh’a #gpose #cosmicexploration

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あたたかい眼差し 愛おしく私を
包んでくれる時そっと祈った
そう幸も不幸もともに抱こう

Warm gaze, the moment it dearly
Enveloped me, I prayed
That I will hold both blessing and misfortune

#Gpose #AgathaGpose #Viera #CosmicExploration

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7 hours of fighting RNG later, I have my own spider mech \o/

. #cosmicexploration . #ffxiv . #ff14 . #gpose .

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I swear I didn't mean to do it as every second one first. (Just finished carpenter.) I was just trying to do them in a way that would have them be more useful since it's a better tool and all. 🙃

#ffxiv #cosmicexploration

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