Lightnews — Scholar-powered news

Garcimor

@garcimor.bsky.social

This is a quick test on NGC 7000, with only the Hα filter. 8x300’’ taken with N.I.N.A. and processed with Pixinsight.

#astrophotography

Ionized hydrogen nebula in the Cygnus region: swirling gas and dust forming subtle light-and-shadow shapes, with a dense field of fine stars scattered across the entire frame.

December 4, 2025 at 9:58 PM

Reposted by Garcimor

Astronomy Picture of the Day 🪐

@apod.shinyakato.dev

🔭 Galaxies in the Furnace

Image Credit & Copyright: Simone Curzi and the ShaRA Team

apod.nasa.gov/apod/ap25120...

An example of violence on a cosmic scale, enormous elliptical galaxy NGC 1316 lies about 75 million light-years away toward Fornax, the southern constellation of the Furnace. Investigating the startling sight, astronomers suspect the giant galaxy of colliding with smaller neighbor NGC 1317 seen just right of the large galaxy's center, producing far flung star streams in loops and shells. Light from their close encounter would have reached Earth some 100 million years ago. In the sharp telescopic image, the central regions of NGC 1316 and NGC 1317 appear separated by over 100,000 light-years.Complex dust lanes visible within also indicate that NGC 1316 is itself the result of a merger of galaxies in the distant past. Found on the outskirts of the Fornax galaxy cluster, NGC 1316 is known as Fornax A. One of the visually brightest of the Fornax cluster galaxies it is one of the strongest and largest celestial radio sources with radio emission extending well beyond this one degree wide field-of-view.

December 4, 2025 at 8:00 AM

Reposted by Garcimor

Eric Lagadec

@ericlagadec.bsky.social

Vous assistez, quasiment en direct à la formation d'un cratère sur la Lune, avec un impact filmé ce matin !

November 16, 2025 at 3:26 PM

Reposted by Garcimor

Mike Asbury

@masbury.bsky.social

I’m making progress on my latest project. This is the Soul Nebula. This is currently a 4 panel mosaic and is cropped to make it as much of a rectangular FOV as possible. #astrophotography

November 15, 2025 at 3:11 PM

Garcimor

@garcimor.bsky.social

A quick photography of Andromeda Galaxy, M31, during my transition tests from Asiair to N.I.N.A. (30 minutes for each L, R, G, B filter ; processed with Pixinsight).

#astrophotography

Andromeda Galaxy (M31) appears as a large, bright spiral galaxy surrounded by countless stars. Its bright core is situated in the center, with soft dust lanes spiraling outward in the dark night sky.

November 12, 2025 at 3:08 PM

Reposted by Garcimor

Astronomy Picture of the Day 🪐

@apod.shinyakato.dev

🔭 Lynds Dark Nebula 43

Image Credit & Copyright: Team Ciel Austral

star.ucl.ac.uk/~apod/apod/a...

Sure, Halloween is an astronomy holiday. But astronomers always enjoy scanning the heavens for spook-tacular galaxies, stars, and nebulae. This favorite is item number 43 from the Beverly Lynds' 1962 Catalogue of Dark Nebulae, fondly known as the Cosmic Bat nebula. While its visage looks alarmingly like a scary flying mammal, Lynds Dark Nebula 43 is over 12 light-years across. Glowing with eerie light, stars are forming within the dusty interstellar molecular cloud that is dense enough to appear in silhouette against a luminous background of Milky Way stars. Watch out. This Cosmic Bat nebula is a mere 400 light-years distant toward the serpent-bearing constellation Ophiucus.

October 30, 2025 at 8:00 AM

Garcimor

@garcimor.bsky.social

This is one of my first astrophotographies, retreated with tools from 2025. M27, taken in 2022 with a 150/750 Newton and a Nikon D7100 (processed on Pixinsight).

#astrophotography

Astrophotography image of the Dumbbell Nebula (M27), a bright planetary nebula in the constellation Vulpecula, surrounded by a rich field of stars.

October 25, 2025 at 8:11 AM

Reposted by Garcimor

Astronomy Picture of the Day 🪐

@apod.shinyakato.dev

🔭 NGC 6960: The Witch's Broom Nebula

Image Credit & Copyright: Brian Meyers

apod.nasa.gov/apod/ap25100...

A starfield is shown that has a multi-filament nebula flowing across it horizontally. The most prominent colors are red and blue. Please see the explanation for more detailed information.

October 1, 2025 at 8:00 AM

Reposted by Garcimor

Astropierre

@astropierre.com

Le saviez-vous ?

Plus vous approchez de la vitesse de la lumière, plus la distance entre vous et votre destination RÉTRÉCIT, ce qui permet en théorie, sans briser aucune loi de la physique, d'atteindre n'importe quel point de l'Univers en un temps raisonnable (si vous allez assez vite)

#thread
⬇️⬇️⬇️

Schéma illustrant la contraction des longueurs pour différentes vitesses (v nulle, v = 86.6% de c, v = 99.5% de c, et v tend vers c)

September 27, 2025 at 8:38 AM

Reposted by Garcimor

Astropierre

@astropierre.com

Il est très rare d'avoir 2 comètes visibles dans le ciel... et encore plus rare de pouvoir les capturer toutes les deux en un seul cliché :

Luc Perrot @lucperrot.bsky.social · Sep 22

Actuellement deux comètes présentes dans notre système solaire semblent se tirer la bourre. Leur nom de code : C/2025 K1 ATLAS (à gauche) et C/2025 R2 SWAN (à droite). En réalité leurs trajectoires respectives sont très différentes.
Reunion Island - 20 septembre 2025.

September 22, 2025 at 6:36 PM

Reposted by Garcimor

Astronomy Picture of the Day 🪐

@apod.shinyakato.dev

🔭 Comet C/2025 R2 (SWAN)

Image Credit & Copyright: Team Ciel Austral

apod.nasa.gov/apod/ap25091...

A new visitor from the outer Solar System, comet C/2025 R2 (SWAN) also known as SWAN25B was only discovered late last week, on September 11. That's just day before the comet reached perihelion, its closest approach to the Sun. First spotted by Vladimir Bezugly in images from the SWAN instrument on the sun-staring SOHO spacecraft, the comet was surprisingly bright but understandably difficult to see against the Sun's glare. Still close to the Sun on the sky, the greenish coma and tail of C/2025 R2 (SWAN) are captured in this telescopic snapshot from September 17. Spica, alpha star of the constellation Virgo, shines just beyond the upper left edge of the frame while the comet is about 6.5 light-minutes from planet Earth. Near the western horizon after sunset and slightly easier to see in binoculars from the southern hemisphere, this comet SWAN will pass near Zubenelgenubi, alpha star of Libra, on October 2. C/2025 R2 (SWAN) is scheduled to make its closest approach to our fair planet around October 20.

September 18, 2025 at 8:00 AM

Reposted by Garcimor

JDS

@jdsoubeyran.bsky.social

Ajout de 80 nouveaux sub's sur cette cible. Un total de 7h de poses 🔭. Beaucoup de nouveaux détails. J'adore cette nébuleuse.
Nébuleuse de la bulle / NGC7635
#Celestron C8 Edge HD / Réducteur 0.7 ASI533MC Pro / Mount iOptron CEM40 #Astrophography #Astronomy

September 3, 2025 at 6:24 AM

Reposted by Garcimor

Astronomy Picture of the Day 🪐

@apod.shinyakato.dev

🔭 Trapezium: In the Heart of Orion

Image Credit: Data: Hubble Legacy Archive, Processing: Robert Gendler

apod.nasa.gov/apod/ap25081...

A bright nebula occupies the center of the frame. The nebula is complex but roughly tan in the center and red around the edges. In the center are four bright blue stars. Please see the explanation for more detailed information.

August 13, 2025 at 8:00 AM

Reposted by Garcimor

Jeff

@jeff-in-va.bsky.social

Molecular dust flying about 600 light-years away. This image is about 3.5x2.5 degrees, which means the moon would fit inside the field of view 35 times. Taken with my Takahashi Epsilon in SW New Mexico and processed in my astro-den in Virginia. #astrophotography #photography

Lots of brown/grey molecular space dust in a field of stars

August 2, 2025 at 7:20 PM

Reposted by Garcimor

Manuel Huss

@manuelhuss.bsky.social

The Cygnus Wall in NGC 7000 about 2.500 light years away. Starless with 8" Newton & 2600 mono. ~20 hours of exposure. #astrophotography

July 13, 2025 at 7:49 PM

Reposted by Garcimor

Emmanuel Fernandes

@emmanfernandes.bsky.social

📢 J’adresse une lettre ouverte au préfet du Bas-Rhin.
Deux enfants scolarisés à Strasbourg ont été emmenés à Paris pour être expulsés. L’un a été menotté. Leur mère est déjà en Géorgie.
Cette violence d’État est inacceptable.
👉 Les droits de l’enfant doivent primer.

May 6, 2025 at 2:55 PM

Garcimor

@garcimor.bsky.social

#astrophotography

May 1, 2025 at 7:20 PM

Garcimor

@garcimor.bsky.social

Waxing gibbous moon, tonight

#astrophotography

April 10, 2025 at 10:40 PM

Garcimor

@garcimor.bsky.social

Tonight

#astrophotography

April 4, 2025 at 10:24 PM

Reposted by Garcimor

Université de Strasbourg

@unistra.fr

La mission Euclid de l’Agence spatiale européenne a publié son premier lot de données captées par le télescope spatial du même nom.
Ce 19 mars, l'@obsstrasbourg.bsky.social a accueilli des membres de l'équipe française du Consortium scientifique Euclid pour une projection commentée.

@esa.int