This is called an Einstein Ring. When a massive foreground galaxy (in this case, an elliptical galaxy) warps the space-time around it, light from behind it bends in our direction.

The JWST caught this fantastic example, where the background spiral galaxy is getting warped into our view. It appears as a ring, but we can see its structures like its spiral arms, gas features and star clusters.

Incredible science happening here!

ESA/Webb/NASA/CSA/G. Mahler

I added the annotations in the second image.

In the centre is an elliptical galaxy, seen as an oval-shaped glow around a small bright core. Around this is wrapped a broad band of light, appearing like a spiral galaxy stretched and warped into a ring, with bright blue lines drawn through it where the spiral arms have been stretched into circles. A few distant objects are visible around the ring on a black background.

#astronomy #astrophysics #generalrelativity

**Daniel Pomarède** @pomarede@mastodon.social · 5d

Daniel Pomarède @pomarede@mastodon.social

#JWST Picture of the Month

Spying a spiral through a cosmic lens

Credit: ESA/Webb, NASA & CSA, G. Mahler
Acknowledgement: M. A. McDonald
https://esawebb.org/images/potm2503a/

#Astronomy #Astrophysics #Astrodon

**NASA** @nasa@social.beachcom.org · 6d

NASA @nasa@social.beachcom.org

NASA’s Webb Sees Galaxy Mysteriously Clearing Fog of Early Universe https://science.nasa.gov/missions/webb/nasas-webb-sees-galaxy-mysteriously-clearing-fog-of-early-universe/ #NASA #Astrophysics #Galaxies #GalaxiesStarsBlackHoles #GoddardSpaceFlightCenter #JamesWebbSpaceTelescopeJWST #ScienceResearch #TheUniverse

A two panel image. At left, hundreds of tiny galaxies are scattered across the black background of space. A small portion of the sky near the bottom is outlined with a white box. Lines extend from the corners of the box to the right panel. At right, a small red dot at the middle is highlighted with white lines and labeled redshift z = 13. At upper left, a face-on spiral galaxy is labeled z = 0.63. At lower right, an edge-on spiral galaxy is labeled z = 0.70. A handful of other small background galaxies are seen against the black background of space. At lower right, the panel is labeled JADES-GS-z-13-1.

NASA Science · 6dNASA’s Webb Sees Galaxy Mysteriously Clearing Fog of Early UniverseBy NASA Webb Mission Team

**formuchdeliberation** @formuchdeliberation@mastodon.world · Mar 24

Mar 24

formuchdeliberation @formuchdeliberation@mastodon.world

The Brighter Side of News: Scientists think they discovered what existed before the Big Bang…

#Darkmatter has baffled physicists for nearly a century, quietly shaping our #universe 's unseen framework. Invisible yet influential, it provides the gravity necessary to hold #galaxies together... #science #space #physics #bigbang

https://formuchdeliberation.wordpress.com/2025/03/24/the-brighter-side-of-news-scientists-think-they-discovered-what-existed-before-the-big-bang/

for much deliberation · Mar 24The Brighter Side of News: Scientists think they discovered what existed before the Big Bang…#Darkmatter has baffled physicists for nearly a century, quietly shaping our #universe ‘s unseen framework. Invisible yet influential, it provides the gravity necessary to hold #galaxies toge…

**Flipboard Science Desk** @ScienceDesk@flipboard.social · Mar 23

Mar 23

Flipboard Science Desk @ScienceDesk@flipboard.social

Most of the galaxies in the universe rotate in the same direction. Why this happens highlights a gap in our understanding of how the universe works. "It is still not clear what causes this to happen, but there are two primary possible explanations," says astronomer Lior Shamir of Kansas State University. @ScienceAlert explores both:

https://flip.it/r0lG1-

ScienceAlert · Mar 23The Entire Universe Could Exist Inside a Black Hole – Here's WhyWhen you peer out into the depths of the cosmos, a mystery lies there, waiting.

#Science #Space #Universe

**Andrea Luck** @andrealuck@fosstodon.org · Mar 23 *

Mar 23 *

Andrea Luck @andrealuck@fosstodon.org

Oh my... it's full of Galaxies!

Video zoom animation of the Deep Field South taken by ESA Euclid Space Telescope

Full size: https://flic.kr/p/2qTEFJk
Zoomable image & more info: https://flic.kr/p/2qTFE4L

Credit: ESA/Euclid/EuclidConsortium/NASA/AndreaLuck CC BY

Latest data release available on: https://eas.esac.esa.int/sas
Filters: VIS, NIR H, NIR J, NIR Y

#Space #Astronomy #Galaxies

**rdm** @rdm@aus.social · Mar 23

Mar 23

rdm @rdm@aus.social

So last night we put our #Dwarf3 telescopes on the studio roof at the back of the house, loaded up some schedules, and let them go all, night.

Inspired by @malcircuit 's post a little while ago, one of the targets I programmed in was Markarian's Chain, a string of galaxies.

This is 170x60s@gain 60, post processed using the automated online denoising tool that Dwarf have made available, and finished off in #Snapseed

A dark sky with many stars. Across to top third is line of galaxies of various sizes, which curves down in a fishhook shape at the right.

#Astronomy #Astrodon #astrophotography

**Paul Houle** @UP8@mastodon.social · Mar 22

Mar 22

Paul Houle @UP8@mastodon.social

Webb reveals unexpected complex chemistry in primordial galaxy

(... what we think of as the "first billion years" of the universe probably took a more billion years than that)

https://phys.org/news/2025-03-webb-reveals-unexpected-complex-chemistry.html

Phys.org · Mar 10Webb reveals unexpected complex chemistry in primordial galaxyBy Niranjana Rajalakshmi

#astronomy #galaxies #universe

**NASA** @nasa@social.beachcom.org · Mar 21

Mar 21

NASA @nasa@social.beachcom.org

Hubble Captures a Neighbor’s Colorful Clouds https://science.nasa.gov/missions/hubble/hubble-captures-a-neighbors-colorful-clouds/ #NASA #Astrophysics #AstrophysicsDivision #Galaxies #GoddardSpaceFlightCenter #HubbleSpaceTelescope #MagellanicClouds #TheUniverse

NASA Science · Mar 21Hubble Captures a Neighbor’s Colorful CloudsBy NASA Hubble Mission Team

**Paul Houle** @UP8@mastodon.social · Mar 21

Mar 21

Paul Houle @UP8@mastodon.social

Small, faint and 'unexpected in a lot of different ways': Dwarf galaxy discovery forces rethink of cosmic evolution

https://phys.org/news/2025-03-small-faint-unexpected-lot-ways.html

Phys.org · Mar 11Small, faint and 'unexpected in a lot of different ways': Dwarf galaxy discovery forces rethink of cosmic evolutionBy University of Michigan

#astronomy #galaxies #science

**Hacker News** @ycombinator@rss-mstdn.studiofreesia.com · Mar 20

Mar 20

Hacker News @ycombinator@rss-mstdn.studiofreesia.com

Oxygen discovered in most distant known galaxy
https://www.eso.org/public/news/eso2507/
#ycombinator #ESO #eso_org #Astronomy #Astrophysics #Astronomie #Suedsternwarte #telescopes #detectors #comets #planets #stars #galaxies #nebulae #universe #NTT #VLT #VLTI #ALMA #ELT #La_Silla #Paranal #Garching #Chile

www.eso.orgOxygen discovered in most distant known galaxyTwo different teams of astronomers have detected oxygen in the most distant known galaxy, JADES-GS-z14-0. The discovery, reported in two separate studies, was made possible thanks to the Atacama Large Millimeter/submillimeter Array (ALMA), in which the European Southern Observatory (ESO) is a partner. This record-breaking detection is making astronomers rethink how quickly galaxies formed in the early Universe.

**CosmicRami** @CosmicRami@aus.social · Mar 20

Mar 20

CosmicRami @CosmicRami@aus.social

My mind is still a bit blown from #Euclid telescope images last night.

When I zoomed in on a tiny patch of sky — field of view: 7.1' x 3.6, which is about the size of a grain of rice held at arms length — there was so much to see.

Walls and walls of galaxies. And then more walls of galaxies behind this.

Each galaxy hosts hundreds of billions of stars and there are millions of them, all, in this tiny field of view.

We are tiny tiny creatures.

#Astrodon #Galaxies #scicomm

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