by @emily.space
A science-oriented feed about extragalactic astronomy! Part of the Astronomy feeds network. Astronomers can sign up to post here via @bot.astronomy.blue Contains posts from signed up users with #extragalactic. Posts here are also included in the main Astronomy feed.
Sascha Trippe 🛰️ 사샤 트리페 NEW PAPER: Wanchaloem Khwammai, my ex-student and now postdoc at NARIT, found a 300-deg polarization angle swing in multi-observatory radio data of the blazar OJ 287, likely caused by the propagation of a transient disturbance in the jet. arxiv.org/abs/2610.03044 🧪🔭☄️ #RadioAstro #Extragalactic
Geoffrey SN 2026aaiv Type Ia supernova in NGC 7331. Very bright !! 🤩I measured it last night at magR 12.00. Images taken with VariSky Observatory. 🔭 #astronomy #astrosci #extragalactic #science #supernova
janiceleeastro 💙 the cover of the HWO-J workshop proceedings✨ iral2.ess.sci.osaka-u.ac.jp/~sumi/HWO_Ja... 🔭🧪☄️ #exoplanet #galactic #extragalactic
Geoffrey IC342 "the hidden galaxy". Located 11,4 Mly away in a nearby cluster. Located close to the plane of our own Galaxy, its apparent environment is crowded with stars and dust, dimming and reddening its light. From "Pierre Antonini observatory", France, T200 f3.2 ✨ #astronomy #galaxy #extragalactic
Geoffrey A bit late to catch the - formerly-luminous - AT 2026aabo nova in the great Andromeda galaxy. 34min of acquisition in R_band at the end of the last night. Really dim now, just at the limit of detection at mag 18 ! 🔭 Anyway, I managed to get this souvenir shot 😜 #astronomy #astrosci #extragalactic
Geoffrey Ongoing campaign on blazar Mrk501, approaching 100 days of monitoring with the "Extragalactic Amateur Telescope" 😊 #extragalactic #quasar #blazar #astroscience #astronomy #citizenscience
ESA Space Science 🎧 Ever wondered what a black hole collision would sound like? Find out in the fourth episode of our Expedition Sound podcast! 🎙️ Join us as we travel into deep space to explore the mysterious effects of gravity we can observe with our space missions 👉 shorturl.at/UGpUc 🔭🧪 #cosmology #extragalactic
Geoffrey 🔭Ongoing multi-spectral photometric campaing on the blazar Mrk 501, in Hercules. On behalf of the WEBT in support of the ASTRI-Team, which is currently performing TeV gamma-ray ⚡observation campaign of the same target. #VariSky #AstroSci #Astronomy #Science #Extragalactic
Geoffrey VariSky Observatory ready to aim for quasar all night ! 😍 #quasar #photometry #astronomy #extragalactic #science
Caltech IPAC Time to go into quantum superposition ‘cause you’re going to want to attend both of these 2 pm Tuesday #AAS248 special sessions! 🔭👩💻💫 🤖 AI-Driven Science in the Survey Era bit.ly/4a0oXoX 🛰️Science with the All-Sky SPHEREx Mission bit.ly/4vNzqfO #astromethods #galactic #extragalactic #ipac40
Caltech IPAC Looking forward to #AAS248 next week…and our #IPAC40 PARTY! 🥂🥳 We're celebrating 40 years of IPAC with food, drinks, activities, and merch! Join us on Wednesday, June 17 @ 6:30-8:00 p.m. More details here: www.ipac.caltech.edu/page/aas248 🔭☄️#astrocode #exoplanet #galactic #extragalactic
Keith Smith Dynamical mass measurements of supermassive black holes (SMBHs) are usually limited to nearby examples. Newman et al. use gravitational lensing and stellar kinematics to measure the mass of an inactive SMBH at redshift 2, over 10 billion years ago. ☄️🔭 #extragalactic www.science.org/doi/10.1126/...
Nereide 🧵1/8 Messier 77 (M77 or NGC 1068), at "only" 45 Mly away in Cetus, gives us a clear view of both a busy star-forming disk and a very energetic core. A new mid-infrared image from JWST’s MIRI instrument shows it in remarkable detail. 🔭🧪⚛️ esahubble.org/images/sci26... #extragalactic #astronomy
Aritra Ghosh I অরিত্র ঘোষ 🔭 Paper Day! 🧪 Introducing Hyrax — an astro-focused ML framework built for the era of Rubin, Roman, and Euclid Handles the entire ML lifecycle: from data acquisition → training → inference → interactive latent-space discovery. pip install hyrax (1/n) 🧵 #astronomy #astrocoding #extragalactic
janiceleeastro (1/n) 🧵 Now published in Part 1 of the HWO25 conference proceedings, this collection of 60 science cases illustrates the extraordinary scientific reach of the #HabitableWorldsObservatory from... 🧪🔭☄️ #extragalactic #exoplanets #galactic
ESA Space Science Webb draws us in towards a beacon of light in swirls of dust, in this image of spiral galaxy M77. But what are the bright orange lines appearing to radiate out from the centre? Hint: they are not a feature of the galaxy. Find out 👉 www.esa.int/Science_Expl... 🔭 #extragalactic
ESA Space Science Webb & Hubble have looked at thousands of young star clusters in four nearby galaxies ✨ Their new findings give us a better grasp of star formation and how planets form. Read more 👉 www.esa.int/Science_Expl... 🔭🧪 #extragalactic
Nereide 1/7 This Hubble release highlights NGC 3137, a spiral galaxy 53 Mly away in the constellation Antlia.🔭 Its relative closeness gives scientists a solid chance to follow the full cycle of star formation and death in a system much like ours. 🧪 esahubble.org/images/potm2... #extragalactic
ESA Space Science Hubble has captured a detailed view of a spiral galaxy glittering with star clusters ✨ Nearby NGC 3137 gives us a glimpse of a galactic system similar to our own. Read more 👉 www.esa.int/ESA_Multimed... 🔭 #extragalactic
Geoffrey SN 2026kid, a type II supernova (death of a massive star) discovered on 22.04 in the galaxy NGC 5906, some 46 Mly away. The SN appears considerably reddened, probably by interactions with its circumstellar medium. Let the follow-up campaing begin ! 🤩 #astronomy #extragalactic_astronomy #astrosci
CASCA GSC Meet Ben Rasmussen, our final gradhighlight of the year 💫 Ben is an MSc student at the University of Victoria studying the cold-gas reservoirs of post-starburst galaxies 🌌 Read all about his awesome research here: casca.ca?page_id=22894 #astro #astrosci #extragalactic
Nereide 🧵1/6 The bright spiral galaxy M81 (also known as NGC 3031 or Bode’s Galaxy) is the largest member of the M81 Group — a collection of 34 galaxies in Ursa Major, located about 11.8 million light-years from Earth. apod.nasa.gov/apod/ap17091... 🔭🧪⚛️ #extragalactic #universe #science #astronomy
Geoffrey SN2026fvx, 21 days apart. Measured the last night at mag 12,7 ! Impressive. The thermonuclear explosion now outshines all its host galaxy. #supernova #SNIa #astronomy #extragalactic #trensient #science
Nereide 1/4 In this splendid pic #Hubble captured NGC 2040 or LH 88, mesmerising stellar grouping in the Large Magellanic Cloud, which is a dwarf satellite galaxy of the Milky Way. The image shows ultraviolet, visible & infrared light. ➡️ science.nasa.gov/missions/hub... 🔭 🧪 ⚛️ #extragalactic #science
Geoffrey Quasars survey tonight ! Still working on the workflow for this project. #astronomy #science #extragalactic_astronomy #quasar #AGN
CASCA GSC Meet Niloofar Pourjafari, our second (and final) March 2026 GradHighlight ✨ Niloofar is a PhD student at the University of Calgary studying galactic magnetic fields using radio observations 🌌 Check out her research here: casca.ca?page_id=22650 #astronomy #astrosci #extragalactic