An annotated photo of a black cat sitting on a dark black sofa, with a gray blanket dramatically draped and bunched around it. Red arrows and white labels overlay the image, comparing the scene to a black hole: the black sofa cushion is labeled "Outer Space," the cat is labeled "Singularity," the edge of the sofa cushion is labeled "Event Horizon," and the rumpled gray blanket being pulled toward the cat is labeled "Matter being pulled by the singularity's gravity." The cat stares directly into the camera with bright yellow-green eyes.

seems right to me...

📷 :www.reddit.com/r/cats/comments/1rvf8l7/...
#Humor #astrodon #astronomy #space #cat #cats #CatsOfMastodon #BlackHole #science #space #cute

A series of (presumably) Twitter posts by Hannalore Gerling-Dunsmore @JoyOfPhysics Me, as an undergrad, just starting upper level courses: THERE IS A PROFOUNDLY BEAUTIFUL REASON FOR ALL LAWS OF PHYSICS Me, as a perpetual graduate student: Light goes that fast because it wants to. Me now: light redshifts because it gets tired and blueshifts because it goes weeeeeeeeee going down the gravitational potential Me, now: stellar evolution is when the star eats all its favorite snacks and has to move on to progressively worse snacks Eventually it runs out of snacks and blows itself up, which is something we can all relate to

Folks, this is a perfectly accurate description of getting a PhD studying space.

#space #academicchatter #phd #astrophysics #Astronomy #Astrodon

From source in toot: Two observations of Saturn are split diagonally, with Webb’s infrared observations at bottom left and Hubble’s visible at top right. In infrared, Saturn has horizontal bands, with bands northern bands and bands toward the south poles appearing darker orange and lightening to tan as they approach the equator. The south pole glows a greenish-grey. In visible, Saturn’s horizontal bands appear pale yellow, with some bands towards the north pole having a light blue hue. In both, the rings are bright white, glowing slightly less in the Hubble image.

#JWST (left) & #Hubble (right) image mashup of #Saturn 🤩 🪐

📷 :https://flic.kr/p/2s3WExM

#planet #astrophotography #space #science #astrodon #astronomy #saturn #SolarSystem #NASA #ESA

Original post on mastodon.social

Oh my heart ... There are still papers on ArXiv that list K. as co-author. I don't know what I'm more afraid of: seeing one of the papers and being faced with the fact that my friend and mentor is gone or realizing at some point that this was it, the last paper she contributed to got published […]

Skywarden just got a framing assistant. Open any object, get a rotatable, draggable FOV overlay on a real sky survey image - sized to your exact optics and sensor.

Auto-rotates to best fit the object into your frame. For larger targets, it calculates the […]

[Original post on mastodon.social]

Schwarz-weiß Cartoon eines Sternsystems mit einem schwarzen Loch und einem normal Stern in der Mitte; sie sehen gleich aus, außer dass der Komet keinen Schweif hat.

Was würde passieren, wenn die Sonne plötzlich zu einem Schwarzen Loch werden würde?

Rein von der Himmelsmechanik her gesehen: gar nichts. Die ganzen Planeten, Zwergplaneten (wie Pluto), Asteroiden und Kometen unseres Sonnensystems würden auf ihren Bahnen […]

[Original post on mastodon.social]

Composite showing two red dots, representing the exoplanets WISPIT 2b and 2c, embedded in the white ellipses of scattered light.

Delighted to see our WISPIT team announce the second directly imaged exoplanet from the WISPIT 2 system! Led by Chloe Lawlor (Galway) with Richelle van Capelleveen (Leiden), we also have a spectrum of the inner, more massive planet, showing carbon monoxide features. ☄ #exoplanet #astrodon

The Leo Triplet - M65, M66, and the Hamburger Galaxy NGC 3628 - 35 million light-years away in Leo. Three spiral galaxies, gravitationally bound, mutually distorted.

adfr.io/astro/202603...

#astrodon #astrophotography #astrophotographer #astrophoto #deepsky #galaxies #galaxy

The Leo Triplet - three spiral galaxies 35 million light-years away in Leo.

NGC 3628 appears perfectly edge-on, its dust lane and warped disk shaped by billions of years of tidal interaction. M65 and M66 complete the trio with asymmetric arms and disrupted […]

[Original post on mastodon.social]

A Hubble Space Telescope image of the Crab Nebula (M1), the remnant of a supernova explosion set against a black background. The nebula fills most of the frame in a roughly oval mosaic of tiled exposures. Intricate filaments of glowing gas in vivid orange, red, and yellow lace across the outer regions, while the interior glows in diffuse blue and white. Purple and violet hues blend throughout. It has a web-like appearance. Several bright foreground stars with diffraction spikes are visible scattered around the field.

Never enough Crab Nebula!!

In fact, it even won #GoldStar on our episode on the #constellation #Taurus -- listen here: starrytimepodcast.podbean.com/e/taurus-the-bull/

#astronomy #astrophotography #space #science #Taurus #Zodiac #Constellations […]

[Original post on universeodon.com]

A historic astronomical photograph of the Ring Nebula (M57) taken in 1885 by French astronomers Paul and Prosper Henry. The image is rendered in sepia tones on a dark background, showing the nebula as a large glowing oval ring with a darker hollow center and a brighter, diffuse outer halo — the shell of gas expelled by a dying star. Several faint background stars and small fuzzy objects are scattered across the dark field.

#Astrophotography (albumen silver print from glass negative ) of Ring Nebula from... 1885!

The ring nebula is located in the #constellation Lyra! You can learn more about the cool #astronomy in the constellation, #Lyra here […]

[Original post on universeodon.com]

Lake Tanganyika, Africa

Lake Tanganyika, Africa
© BEST-BACKGROUNDS/NASA/Shutterstock
#NASA #astrodon #photography #Africa

Image description from source in toot: A time sequence of three panels side by side. From left to right, the panels are labeled November 8, 2025; November 9, 2025; and November 10, 2025. This series of images from Hubble of the fragmenting comet C/2025 K1 (ATLAS), or K1 for short. The sequence shows the progressive disintegration of the comet over this brief period. Each panel features several bright, fuzzy, blue, streaking lights in a diagonal line from the upper left to the lower right of a black background. In the first panel, four comet-like objects appear. The largest is the second from the upper left. In the second panel, the largest object has broken into two pieces. In the third panel, the pieces appear to be moving away from each other along the invisible diagonal line.]

#Hubble with 'eyes' on C/2025 K1 (ATLAS)!

📷 : https://esahubble.org/images/heic2606a/

#Astrophotography #space #science #comet #astronomy #astrodon #ATLAS

A false-color scientific map of the Moon's gravity gradient against a black background. The data is visualized using a diverging color scale shown in a legend in the upper right, ranging from deep blue (−30 Eötvös) through cyan and yellow-green (near zero) to orange and red (+30 Eötvös). The surface is covered in intricate swirling patterns of color revealing variations in the Moon's gravitational field. The overall background is predominantly cyan-green.

What is this psychedelic #art??

It's #SCIENCE -- specifically gradients of gravity on the moon! Red and blue indicate stronger gravity gradients.

📷 / learn more: www.jpl.nasa.gov/images/pia16585-lunar-gr...

#astrophotography #space #astronomy #JPL #NASA #astrodon #GRAIL #rad

Original post on mastodon.social

The planetarium at Albert-Schweitzer-Oberschule Chemnitz is coming back to life. We're kicking things off with the Tag der Astronomie on 28 March – free planetarium shows, telescopes in the courtyard, and live views through the observatory. No tickets, no registration […]

Skywarden - Deep-sky object finder for astrophotographers Find the best deep-sky targets for tonight based on location, equipment, and conditions.

New Skywarden update v0.24 🎉

No more duplicates - objects now only appear once in the list but show all catalogue IDs

Proper previews - every object shows a preview image, thanks to CDS hips2fits and DSS2

Check it out at skywarden.app

#astrodon #astrophotography #astrophotographer #planning #app

Original post on mastodon.social

New Skywarden update v0.24 🎉

No more duplicates - objects now only appear once in the list but show all catalogue IDs.

Proper previews - finally, every object shows a nice preview image, thanks to CDS hips2fits and DSS2 survey.

Check it out at https://skywarden.app

#astrodon […]

Messier 106 Hey there, I'm Frank. I create web experiences and capture the beauty of the universe.

M106 is one of those objects that rewards a closer look. What appears to be extra spiral arms is actually shock-heated gas pushed out of the galactic plane by jets from an active nucleus.

adfr.io/astro/202603...

#Astrodon #Astrophotography #M106 #NGC4258 #DeepSky #astrophoto

Original post on mastodon.social

M106 is one of those objects that rewards a closer look. What appears to be extra spiral arms is actually shock-heated gas pushed out of the galactic plane by jets from an active nucleus. This field also captures NGC 4217 edge-on, the interacting pair NGC 4231/4232, and several fainter neighbors […]

From source in toot: At lower left, an image shows a spiral galaxy with a yellow core and winding arms full of brown dust and blue star formation. A rectangle graphic outlines the core, and lines extend to a larger image at upper right, showing a closer view of the galaxy’s center, surrounded by patches of glowing orange-brown dust and pink stars.

ENHANCE -- Pinwheel galaxy edition!

Brought to you by #Hubble and #JWST

📷 :https://flic.kr/p/2s2vWFL

#Webb #Astrophotography #space #science #astronomy #astrodon #NASA #ESA #galaxy #Messier

Screenshot of a search mask on NASA ADS searching for my name and finding 258 results with 2008 citations.

It's not about numbers, but still, they play some role. Here a nice one for me: sometimes during the last week, I've passed the 4000 citations limit.

#astrodon #XraysAreTheBestRays

Amazing discoveries we're making with the GAIA satellite data, witnessing colliding planets around a Sun-like star!

scitechdaily.com/astronomers-just-saw-two...

#Exoplanets #Astrodon #Space #Astronomy

Original post on mastodon.social

Skywarden and Theo are free and will stay that way.

I've been thinking about how to keep them sustainable - and ruled out ads, paywalls, and subscription models one by one. Instead, both apps will show a small, dismissible message asking for support. No restrictions, no difference between users […]