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aretsch.bsky.social
@aretsch.bsky.social
180 followers 280 following 620 posts
📸🛰🗺️🌋🇦🇶
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Reposted
cmdr-hadfield.bsky.social
This behemoth machine is carrying the Artemis 2 Moon rocket out to the launch pad. It carried the Shuttles I launched in too. A massive, clanking crawler and skilled crew, taking infinite care.
Watch live: youtube.com/live/nrVnsO_rd…
January 17, 2026 at 12:54 PM
Reposted
rsimmon.bsky.social
Academic vs. media representations of a new Antarctic under-ice dataset. The sequential (University of Grenoble-Alpes) palette emphasizes overall structure, divergent (BBC) emphasizes the extremes.

From Science & the BBC/@erwanrivault.com

www.science.org/doi/10.1126/
www.bbc.com/news/article...
📊
Map of Antarctica’s under-ice topography with a sequential color palette (viridis, which runs from dark blue (lowest elevations) through green to yellow (highest elevations)). This palette emphasizes the overall structure of elevation, but obscures the line of bedrock between above and below sea level. The relatively "warm" yellow hues for high elevation also help them visually protrude from the "cool", low-elevation blues. Map of Antarctica’s under-ice topography with a divergent color palette (blue shades represent areas below sea level, tan and brown areas above sea level). This clearly shows where the bedrock is below sea level. It also allows the map to blend seamlessly with ocean bathymetry. Since most elevations are only modestly above or below sea level, and are relatively pale, added shaded relief helps accent the topography. The BBC cartographers also included photos to help illustrate what the topography would look like without ice.
January 16, 2026 at 3:09 PM
Reposted
coreyspowell.bsky.social
Artemis II: coming soon to Launch Pad 39B!

(And by soon, I mean possibly as early as 7am EST tomorrow) 🧪🔭

www.nasa.gov/blogs/missio...
All work platforms are retracted from around NASA’s Artemis II SLS (Space Launch System) rocket and Orion spacecraft, secured to the mobile launcher, inside the Vehicle Assembly Building on Friday, Jan. 16, 2026, in preparation for rollout to Launch Complex 39B at NASA’s Kennedy Space Center in Florida. NASA/Kim Shiflett
January 17, 2026 at 12:41 AM
Reposted
kosmi.bsky.social
Popocatepetl volcano in Mexico.

Image taken by Sentinel-2 on Jan. 12, 2026.
January 16, 2026 at 10:45 PM
aretsch.bsky.social
2 flying objects - near lake Geneva -
that were apparently in a hurry....

Wider view:
1 in the top right
1 in the bottom left

The same close-up

📸🛰 #Sentinel2 2026.01.16

Footage: @sentinelonline.bsky.social
January 17, 2026 at 12:18 AM
aretsch.bsky.social
👀 🧊 Meltwater Rivers on
WEBER INLET, BEETHOVEN PENINSULA
ANTARCTICA

📸🛰 #Sentinel2 2026.01.16

Footage: @sentinelonline.bsky.social

Click to enlarge ↔️↕️
January 16, 2026 at 9:44 PM
Reposted
kosmi.bsky.social
Today's view of Tropical Cyclone Dudzai.

Image taken by Sentinel-3.
January 16, 2026 at 5:24 PM
aretsch.bsky.social
#Nyamuragira

📸🛰 #Sentinel2 2026.01.16

Footage: @sentinelonline.bsky.social
January 16, 2026 at 7:13 PM
Reposted
davidbflower.bsky.social
Landscape beneath Antarctica's icy surface revealed in unprecedented detail. 🧪 www.bbc.co.uk/news/article...
New map reveals landscape beneath Antarctica in unprecedented detail
Scientists believe the map could shed light on how Antarctica's vast ice sheet will respond to climate change.
www.bbc.co.uk
January 16, 2026 at 10:35 AM
Reposted
apod.shinyakato.dev
🔭 A Solar Eruption from SDO

Video Credit: NASA, SDO, AIA, Helioviewer; Processing & Text: Ogetay Kayali (MTU)

apod.nasa.gov/apod/ap26011...
January 13, 2026 at 8:00 AM
aretsch.bsky.social
Iceberg #A23a

.... and thus again a little smaller....

📸🛰 #Sentinel2

Footage: @sentinelonline.bsky.social
January 16, 2026 at 11:30 AM
Reposted
ncar-ucar.bsky.social
Four years ago, the underwater Hunga Tonga volcano 🌋erupted causing an explosive event that could be seen from space. Our researchers were among 159 scientists from 21 countries who published a report looking at the eruption’s far-reaching effects. Check out the report: https://bit.ly/4qUIaOW
Satellite image of Hunga Tonga explosion. Cover for the Hunga Volcanic Eruption report.
January 15, 2026 at 6:50 PM
Reposted
sjbastro.bsky.social
Sirius star trails shot from the early morning of 14 January. Atmospheric scintillation at its finest 😀 #Astronomy #Astrophotography
Swirling rainbow coloured lines formed from a long exposure of the star Sirius while moving the camera during the shot.
January 15, 2026 at 8:01 PM
Reposted
spahn711.bsky.social
I've been inside of both a tornado and a volcano! This is a wide angle photo I shot from within the evacuated magma chamber of a volcano, roughly 400 ft below the surface, looking up toward the vent. If you look closely, you'll see the lift in the vent that brought me down! #Photography
A photo from within the magma chamber of a dormant volcano, 400 ft below the surface. A person is standing on the bounders at the bottom, looking up toward the volcano's vent (the opening through which we were lowered). Lights illuminate the magma chamber's walls, which are a mix of vibrant yellow, red, and black.
January 15, 2026 at 11:47 PM
Reposted
kosmi.bsky.social
Folded rocks in Morocco.

Image taken by Sentinel-2 on Jan. 13, 2026.
January 15, 2026 at 9:24 PM
aretsch.bsky.social
Meltwater rivers 👀
Nivlisen Ice Shelf,
Dronning Maud Land

📸🛰 #Sentinel2 2026.01.07

Link.dataspace.Copernicus.eu/t1a7
January 15, 2026 at 9:42 PM
aretsch.bsky.social
Whakaari / White Island , New Zealand
📸🛰#Sentinel2 2026.01.10
(Motions added)

Footage: @sentinelonline.bsky.social
January 15, 2026 at 12:40 AM
aretsch.bsky.social
Volcano #Nyamuragira #Kongo

📸🛰 #Sentinel2 2026.01.11

Footage: @sentinelonline.bsky.social
January 14, 2026 at 11:46 PM
aretsch.bsky.social
A wider view

#Sun

Footage: JHelioviewer
January 14, 2026 at 10:24 PM
Reposted
kosmi.bsky.social
Mayon volcano in Philippines.

Image taken by Sentinel-2 on Jan. 13, 2026.
January 14, 2026 at 7:15 PM
Reposted
kosmi.bsky.social
Lake Jingyu Hu in western China.

Image taken by Sentinel-2 on Nov. 14, 2025.

h/t @brockmannconsult.bsky.social 😊👍
January 14, 2026 at 12:27 PM
Reposted
kosmi.bsky.social
Lake Eyre in Australia.

Image taken by Sentinel-2 on Jan. 6, 2026.
January 14, 2026 at 11:34 AM
Reposted
tonyveco.bsky.social
🔴⚠️🔥More than 360000Ha burned in the worst #wildfires season for #Australia since 2019/2020, fuelled by a severe heatwave across the country. The state of #Victoria is widely affected with more than 30 active fires ⬇️#Sentinel2 📸 in S. Victoria on Jan.9 #climateEmergency @volcaholic1.bsky.social
January 13, 2026 at 11:30 PM
Reposted
azlinszky.bsky.social
Antarctica, SW of Mount Erebus link.dataspace.copernicus.eu/9far
January 13, 2026 at 10:31 AM
Reposted
kosmi.bsky.social
Today's view of Etna with recent lava flow.

Image taken by Sentinel-2.
January 13, 2026 at 5:32 PM