The 🟦 in the middle is not an Atoll in the Pacific, it is the iceberg #A23a on which meltwater can be seen. A very surreal sight I think. 🙏Sentinel3 BTW to the right of it, approximately at 16:00h, we see South Georgia. 📸🛰#Sentinel3 2026.01.04 #Antarctica Footage: @sentinelonline.bsky.social

Astronomers have spotted a supermassive black hole fleeing its home galaxy at 900+ kilometers per second, heading off alone into intergalactic space. I feel you, friend. 🧪🔭 www.sciencealert.com/jwst-confirm...

🛰️🌍🌋Volcanic activity in Mt Michael in the S. Atlantic. Cloud retrieval from the MODIS-Terra sensor reports smaller droplets in clouds influenced by volcanic emissions consistent with aerosol-cloud interaction theory. #volcanotrack is apparent only in the near-IR bands , not clear in the vis image.

The first full moon of the year. The sight of it rising from the summit of Mount Fuji is Pearl Fuji. (Shot just a moment ago in Shizuoka Prefecture) Credit: KAGAYA x.com/KAGAYA_11949...

Krasheninnikov volcano in Kamchatka. Image taken yesterday by Sentinel-2.

Much better view 😊🎨 Image credit: Worldurbanplanning on instagram. bsky.app/profile/kosm...

A part of northern Germany and the Elbe Delta, covered with snow! It's winter! 📸🛰#Sentinel2 2026.01.03 Footage: @sentinelonline.bsky.social

Hayli Gubbi volcano in Ethiopia. Image taken yesterday by Sentinel-2.

Blue version 😊🔵 bsky.app/profile/kosm...

This is the "Marree Man" geoglyph in South Australia in a Copernicus Sentinel 2B satellite image from 1 Jan 2026. This mysterious geoglyph measuring 2.7 km from head to toes, was created by unknown persons between 27 May and 12 June 1998. en.wikipedia.org/wiki/Marree_Ma

Some planetary nebulae images I processed over the years: NGC 7094, NGC 2371, NGC 4071. #PlanetaryNebulae

#Etna update #INGV has communicated that the effusive activity continues feeding several lava flows from an eruptive fissure located at ca. 2100 m a.s.l. The most advanced flow has now reached 1360 m a.s.l. down the Valle del Bove 📸 G. Tonzuso

Uranus with its rings on January 23, 1986, as Voyager 2 approached, looking down on the planet's south pole.

Eruption of Etna volcano in Sicily. Lava flow is ~3.4 km long 📏😊 Image taken today by Sentinel-2.

Expansion of Home Reef volcanic island in Tonga. Images taken by Sentinel-2 since November.

🔵 In 2025, the NASA/ESA/CSA #Webb Space Telescope found a new moon orbiting Uranus! Called S/2025 U1, it joined the 28 other known moons around the ice giant. Webb’s infrared view also revealed the planet’s rings and atmospheric details in stunning clarity 🧪🔭 www.esa.int/ESA_Multimed... @stsci.edu

BETA PICTORIS MIRI I tried to reduce the brightness in the central region, but that was the best I could do; I wasn't even going to use the F770w filter. Thanks, @melina-iras07572.bsky.social, for the recommendation to download the level 2 files. Little by little I'm learning new things. #JWST

#volcan #volcano #Krasheninnikov 🇷🇺 L'éruption effusive se poursuit, accumulant les coulées sur le versant est/Eruption is ongoing and still accumulates lava flows on the east flank

#volcan #volcano #HomeReef 🇹🇴 L'éruption se poursuit et les coulées visqueuses continuent d'agrandir l'île lentement (~+0.8 km²)/Eruption is ongoing and still progressively enlarge the island's surface (~+0.8 km²)

sunspots 2024-2025 Taken by Patricio Leon on January 2, 2026 @ Santiago, Chile The image shows the evolution of sunspots in consecutive years during solar maximum. (ALT for more info) spaceweathergallery2.com/indiv_upload...

#Nyamuragira volcano Kongo 📸🛰#Sentinel2 2026.01.01 Footage: @sentinelonline.bsky.social

Australian volcano #Mawson Peak, Heard Island 📸🛰#Sentinel2 2026.01.02 Footage: @sentinelonline.bsky.social

🔥 Photos of the attacked oil depot in Rovenky, Luhansk region, most of the tanks destroyed or damaged by FP-2 UAV strikes, - Dnipro Osint

Eruption of Krasheninnikov volcano in Kamchatka. Image taken by Landsat-8/9 on Nov. 30, 2025.

Eruption of Etna volcano in Sicily. New fissure opened up on the eastern flank. Image taken today by Sentinel-2.

#volcan #volcano #Etna 🇮🇹 Un nouvel évent s'est ouvert le 01/01 dans la Valle del Bove, vers 2100m d'altitude, à côté du Monte Simone, à ~3km du sommet/A new ven opened on 01/01 in the Valle del Bove, near Monte Simone, around altitude 2100m and ~3km of the summit

One of the best things that happened to me in 2025 was that we got a permit to visit The Wave in Arizona. Here are some photos from last Friday; needless to say, photos do not do justice to this place

Taurus is prominent in January's evening sky. The Hyades star cluster forms its familiar V-shape, and Aldebaran appears to belong to the cluster. But over ~100,000 years of proper motion, the illusion breaks: Aldebaran is moving to its own beat.

Nova remnant GK Per (the Firework Nebula) Credit:N.A.Sharp/WIYN/NOIRLab/NSF More, alt, and noirlab.edu/public/image... apod.nasa.gov/apod/ap95070...

Just after midnight on 1 January 2026, a new eruption started from #Etna's eastern flank: a fissure opened at ~2100 m elevation, and a lava flow is descending through the desert-like Valle del Bove. Photos taken in the evening of 1 January from Etna's east and southeast flanks

Eruption of Etna volcano in Sicily. New fissure opened up on the eastern flank. Image taken today by Sentinel-2.

Last night I set up my telescope so we could all watch the planets while waiting for the new year to arrive. After the fireworks had subsided, I attached my camera and captured my first astrophoto of the year featuring Jupiter and its moon Europa. #astrophotography Happy New Year everyone!

Let the new year swirl in… What looks like a vortex of fire is in reality a disc around the young AB Aurigae star. Close to the centre, the ‘twist’ (in very bright yellow) marks the spot where scientists believe a planet is forming. 🔭

[ 1/31 ] 🧵 Time for yet another megathread of my favourite satellite pics. This time I have 123 images processed by me in 2025 *. Various dates, random places. Most of them were taken by Sentinel-2, some by S-3 and one or two by Landsat. *There's one more pic that isn't mine, but it's so good 😊

#volcan #volcano #HomeReef 🇹🇴 Le 17/12/2025 une nouvelle éruption effusive a débuté. Elle produit plusieurs coulées visqueuses a faible débit qui agrandissent l'île/On 17/12/2025 a new effusive eruption started. It produces some viscous lava flows that enlarge the island

'USA Speedrun' Images captured by Don Pettit from ISS during Expedition 30 are repaired, processed, retimed & star-trailed with music by Chris Zabriskie. Credit: Don Pettit / ISS / NASA / ESRS / Seán Doran

Nice eruption (M7.1 flare) from AR 14324 to conclude 2025. It is accompanied by a coronal wave. The extent of the wave suggests we may be hit only by the western and southern portion of the CME, which may arrive early on 3 Jan 2026. Halo CME x.com/halocme/stat...

Light echo of the #supernova Cassiopeia A with #JWST NIRCam. Latest image from 2024-12-30. 🔭 Filters: F300M, F360M, F444W from program: www.stsci.edu/jwst-program...

Volcanic hotspots and ash cloud at Barren Island in the Andaman Sea in this image from the Copernicus Sentinel 2B satellite from 25 December. Combination of visual channels and SWIR.

Ol Doinyo Lengai volcano in Tanzania. The last active carbonatite volcano on Earth 😊🌋 Image taken by Sentinel-2.

Happy new year! Let's dance🕺🏻 💃🏻 🥳🌪️ #Tornado #Sun 📸🛰 SDO AIA 304Å & AIA 171 ESA JHelioviewer Projection LogPolar

Today's view of russkie fuel depot in Rybinsk. Image taken by Sentinel-2. 😁🔥

New frame for the Cassiopeia A #supernova light echo. #JWST NIRCam images with filter F444W from August to December 2024. Last two frames have quite the gap of two months. program: www.stsci.edu/jwst-program...

A 15 km long steep triangle of sunlight slices through the persistent winter shadows across the distorted surface of Logan Glacier, #Alaska, seen by #Sentinel-2 on Christmas Day 2025.

Today in 2023, NASA's Juno spacecraft flew by Jupiter's volcanic moon Io, sending back amazing imagery and other data, including this view.

St. Anthony Sand Dunes - Idaho - USA 🌎 : maps.app.goo.gl/UReX28hSUtiR... 4K link : imgur.com/a/tOdlJYO

10) A powerful supercell bubbles near San Antonio, Texas (April 30).

From high-impact weather events to stratus clouds dancing over the open ocean, this year was filled with impressive satellite imagery. We look back on the most compelling satellite views of 2025. 1) Mesovortices slosh within Hurricane Melissa’s ferocious eye (October 8).

2) A haboob charges across Northern Mexico (April 19).

#A23a iceberg #Antartctica A23a looks like a big Swimmingpool 👀 📸🛰 #Sentinel2 2025.12.29 & #Sentinel3 2025.12.30 Footage: @sentinelonline.bsky.social