Dr. Raphael Marschall
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Dr. Raphael Marschall
@spacemarschall.net
4.1K followers 360 following 920 posts
#asteroids #comets #protoplanetarydisks #planetaryScience 🧪🔭🚀🛰️☄️
Science Programme Manager @issibern.ch. Co-I of ESA's Comet Interceptor, collaborator on NASA's Lucy and ESA's Rosetta missions.
www.spaceMarschall.net
(he/him)🇨🇭🇺🇸🇫🇷
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spacemarschall.net
As we embark on this new year, may it bring you joy, health and fulfillment. I wish everyone all the best for 2026 ✨
In the center of the image a man walking on a stony beach. On the right side waves are crashing onto shore and in the background buildings are lit up orange from a sunset.
December 31, 2025 at 10:07 PM
spacemarschall.net
Here is the full bracket of this year's competition. See you in 2026! ✨
Bracket for "BSky Planetary Science Image of 2025" contest, featuring small icons of 16 images grouped into four quarter-finals, four semi-finals, and one final. The winner is big in the centre. All is against a lunar surface backdrop.
December 30, 2025 at 5:53 PM
spacemarschall.net
Here are the full results: blueskypolls.xyz/results.php?...
Full results of the final are shown as a list with bars that extend to the respective percentage of votes. " Uranus as seen by JWST" got 63.1% (70 votes) and "Gigantic TLE* above Mexico seen from the ISS" got 36.9% (41 votes). The bottom panel shows how the number of votes per day and total number of votes changed over time.
December 30, 2025 at 5:44 PM
spacemarschall.net
Congratulations also to our runner-up:

✨Gigantic TLE* above Mexico seen from the International Space Station✨
*transient luminous event (Upper-atmospheric lightning/ionospheric lightning)

Taken on: July 3, 2025
Credit: Nichole Ayers / NASA JSC / ESRS / @stim3on.bsky.social
Description by Simeon Schmauß (https://www.flickr.com/photos/semeion/54664805569/): On July 3rd, astronaut Nichole Ayers photographed a gigantic jet from the ISS. These rare upward directed electrical discharges extend ~90-100 km high into the mesosphere. The jet originated from a thunderstorm over Northern Mexico, with city lights from South Texas and the green airglow layer visible along Earth’s limb. I processed this image from the RAW file, adjusting the color profile, white balance and contrast and applied Lightroom's machine learning denoise with low strength. The RAW was provided to me by Frankie Lucena, his analysis of the event, correlating it to measurements from the Geostationary Lightning mapper and ELF-VLF radio signals can be found here: https://spaceweathergallery2.com/indiv_upload.php?upload_id=224355 City annotations referenced from Riccardo Rossi: https://x.com/RikyUnreal/status/1942367538714734609 Original image listing in the NASA archive: https://eol.jsc.nasa.gov/SearchPhotos/photo.pl?mission=ISS073&roll=E&frame=281502 Credit: Nichole Ayers / NASA JSC / ESRS / Simeon Schmauß
December 30, 2025 at 5:40 PM
spacemarschall.net
The winner of ✨ #planetaryScience image of 2025 ✨ is

✨Uranus as seen by JWST✨
Taken on: October 6, 2025
Credit: NASA/ @esa.int /CSA/ @stsci.edu / @andrealuck.bsky.social

Full resolution: www.flickr.com/photos/19227...

🧪⚛️
Image of Uranus taken by the James Webb Space Telescope, showing a whitish north polar region, vivid blue-greenish atmosphere and a few whitish elongated storms visible around the pole. The planet is surrounded by clearly defined ring system set against the black background of space. Source: https://www.flickr.com/photos/192271236@N03/54879990600/ Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY
December 30, 2025 at 5:37 PM
spacemarschall.net
And the winner, with 63.1% of the vote is 🥁🥁🥁🥁🥁

✨Uranus as seen by JWST✨
Taken on: October 6, 2025
Credit: NASA/ @esa.int /CSA/ @stsci.edu / @andrealuck.bsky.social
Image of Uranus taken by the James Webb Space Telescope, showing a whitish north polar region, vivid blue-greenish atmosphere and a few whitish elongated storms visible around the pole. The planet is surrounded by clearly defined ring system set against the black background of space. Source: https://www.flickr.com/photos/192271236@N03/54879990600/ Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY
December 30, 2025 at 5:32 PM
spacemarschall.net
Who will win ✨ #planetaryScience image of 2025 ✨?

Currently, Uranus is winning, but you still have time to vote for either finalist in this thread here until tomorrow, Dec. 30, at 3 p.m. UTC/4 p.m. CET/10 a.m. EST/7 a.m. PST/midnight JST: bsky.app/profile/spac...

🧪⚛️
Final machup of planetary science image of the year with "Uranus as seen by JWST" vs "Gigantic TLE above Mexico seen from the ISS". Uranus image description: Image of planet Uranus taken by the James Webb Space Telescope (JWST). Source: www.flickr.com/photos/192271236@N03/54879990600/sizes/o/ Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY Colourised image created processing data from: mast.stsci.edu Instrument: NIRCAM Title: CAL-NRC-421: NIRCam Linearity Characterization Target: Uranus Time: 2025-10-06 Filters: F150W2-F162M, F410M Observation ID: jw08975-o001_t001_nircam_f150w2-f162m-sub320, jw08975-o001_t001_nircam_clear-f410m-sub320 Description Earth: On July 3rd, astronaut Nichole Ayers photographed a gigantic jet from the ISS. These rare upward directed electrical discharges extend ~90-100 km high into the mesosphere. The jet originated from a thunderstorm over Northern Mexico, with city lights from South Texas and the green airglow layer visible along Earth’s limb. I processed this image from the RAW file, adjusting the color profile, white balance and contrast and applied Lightroom's machine learning denoise with low strength. The RAW was provided to me by Frankie Lucena, his analysis of the event, correlating it to measurements from the Geostationary Lightning mapper and ELF-VLF radio signals can be found here: https://spaceweathergallery2.com/indiv_upload.php?upload_id=224355 City annotations referenced from Riccardo Rossi: https://x.com/RikyUnreal/status/1942367538714734609 Original image listing in the NASA archive: https://eol.jsc.nasa.gov/SearchPhotos/photo.pl?mission=ISS073&roll=E&frame=281502 Credit: Nichole Ayers / NASA JSC / ESRS / Simeon Schmauß
December 29, 2025 at 9:22 PM
spacemarschall.net
Last year, this spectacular image of Jupiter's moon Io won the Planetary Science Image of the Year 🧪

Credit: NASA/JPL-Caltech/SwRI/MSSS/Kevin M. Gill,
@kevinmgill.bsky.social

Who will win this year? Vote here: bsky.app/profile/spac...
A true color image of Io as imaged by Juno on December 30, 2023 during its closest flyby. This is the closest a spacecraft got in the past 20 years. North is up and this side of Io faces Jupiter. The ↄ-shaped black spot is Loki Patera, to its north is the black spot Amaterasu Patera volcano and further north is the Dazhbog Patera also a black spot. Source: https://commons.wikimedia.org/wiki/File:Io_imaged_by_Juno_spacecraft.png NASA/JPL-Caltech/SwRI/MSSS/Kevin M. Gill, @kevinmgill.bsky.social
December 29, 2025 at 2:13 PM
spacemarschall.net
The James Webb Space Telescope (JWST) is revolutionising our understanding of the universe. It's also doing it for the Solar System with spectacular data, such as that of Uranus here.

If you like this image, you can vote for it here: bsky.app/profile/spac...

🧪⚛️ #sciComm #planetSci
Image of planet Uranus taken by the James Webb Space Telescope (JWST). Source: www.flickr.com/photos/192271236@N03/54879990600/sizes/o/ Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY Colourised image created processing data from: mast.stsci.edu NASA/ESA JWST Webb Space Telescope Instrument: NIRCAM Title: CAL-NRC-421: NIRCam Linearity Characterization Target: Uranus Time: 2025-10-06 Filters: F150W2-F162M, F410M Observation ID: jw08975-o001_t001_nircam_f150w2-f162m-sub320, jw08975-o001_t001_nircam_clear-f410m-sub320 Proposal PI: Varun Bajaj PI Institution: Space Telescope Science Institute Proposal ID: 8975 www.stsci.edu/jwst-program-info/program/?program=8975 Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY
December 29, 2025 at 2:06 PM
spacemarschall.net
I find this image quite fascinating and beautiful. It's showing lightning discharging towards space. Astronaut Nichole Ayers took this image from the International Space Station on July 3, 2025.

If you like it too, you can vote for it here:
bsky.app/profile/spac...

🧪⚛️ #sciComm #planetSci
Description by Simeon Schmauß (https://www.flickr.com/photos/semeion/54664805569/): On July 3rd, astronaut Nichole Ayers photographed a gigantic jet from the ISS. These rare upward directed electrical discharges extend ~90-100 km high into the mesosphere. The jet originated from a thunderstorm over Northern Mexico, with city lights from South Texas and the green airglow layer visible along Earth’s limb. I processed this image from the RAW file, adjusting the color profile, white balance and contrast and applied Lightroom's machine learning denoise with low strength. The RAW was provided to me by Frankie Lucena, his analysis of the event, correlating it to measurements from the Geostationary Lightning mapper and ELF-VLF radio signals can be found here: https://spaceweathergallery2.com/indiv_upload.php?upload_id=224355 City annotations referenced from Riccardo Rossi: https://x.com/RikyUnreal/status/1942367538714734609 Original image listing in the NASA archive: https://eol.jsc.nasa.gov/SearchPhotos/photo.pl?mission=ISS073&roll=E&frame=281502 Credit: Nichole Ayers / NASA JSC / ESRS / Simeon Schmauß @stim3on.bsky.social
December 29, 2025 at 1:55 PM
spacemarschall.net
2/2 Gigantic TLE* above Mexico seen from the ISS
*transient luminous event (Upper-atmospheric lightning/ionospheric lightning)

Taken on: July 3, 2025
Credit: ISS, Simeon Schmauß, @stim3on.bsky.social

🗳️ vote link 1 posts down
Description by Simeon Schmauß (https://www.flickr.com/photos/semeion/54664805569/): On July 3rd, astronaut Nichole Ayers photographed a gigantic jet from the ISS. These rare upward directed electrical discharges extend ~90-100 km high into the mesosphere. The jet originated from a thunderstorm over Northern Mexico, with city lights from South Texas and the green airglow layer visible along Earth’s limb. I processed this image from the RAW file, adjusting the color profile, white balance and contrast and applied Lightroom's machine learning denoise with low strength. The RAW was provided to me by Frankie Lucena, his analysis of the event, correlating it to measurements from the Geostationary Lightning mapper and ELF-VLF radio signals can be found here: https://spaceweathergallery2.com/indiv_upload.php?upload_id=224355 City annotations referenced from Riccardo Rossi: https://x.com/RikyUnreal/status/1942367538714734609 Original image listing in the NASA archive: https://eol.jsc.nasa.gov/SearchPhotos/photo.pl?mission=ISS073&roll=E&frame=281502 Credit: Nichole Ayers / NASA JSC / ESRS / Simeon Schmauß
December 26, 2025 at 3:00 PM
spacemarschall.net
1/2 Uranus as seen by JWST

Taken on: October 6, 2025
Credit: NASA/ESA/CSA/STScI/Andrea Luck CC BY, @stsci.edu, @andrealuck.bsky.social

🗳️ vote link 2 post down

#Uranus #GiantPlanets #IceGiants
Image of planet Uranus taken by the James Webb Space Telescope (JWST). Source: www.flickr.com/photos/192271236@N03/54879990600/sizes/o/ Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY Colourised image created processing data from: mast.stsci.edu NASA/ESA JWST Webb Space Telescope Instrument: NIRCAM Title: CAL-NRC-421: NIRCam Linearity Characterization Target: Uranus Time: 2025-10-06 Filters: F150W2-F162M, F410M Observation ID: jw08975-o001_t001_nircam_f150w2-f162m-sub320, jw08975-o001_t001_nircam_clear-f410m-sub320 Proposal PI: Varun Bajaj PI Institution: Space Telescope Science Institute Proposal ID: 8975 www.stsci.edu/jwst-program-info/program/?program=8975 Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY
December 26, 2025 at 3:00 PM
spacemarschall.net
Final of ✨ #planetaryScience image of 2025 ✨ is here:

Uranus vs. Earth
or
outer vs. inner Solar System

🗳️ The vote link is 3 posts down. Voting ends on Tuesday, Dec. 30, at 3 p.m. UTC/4 p.m. CET/10 a.m. EST/7 a.m. PST/midnight JST. 🧪⚛️
Bracket for "BSky Planetary Science Image of 2025" contest, featuring small icons of 16 images grouped into four quarter-finals. Then there were two semi-finals and the filled in spots of the final with Uranus on the left and a lightning into the Earths atmosphere on the right. There are winner placeholders is still just a question mark. All is set on a lunar surface backdrop.
December 26, 2025 at 3:00 PM
spacemarschall.net
We have our final matchup for #planetaryScience image of the year. It's Uranus vs. Earth.

We'll take a short break before voting. The vote starts on Dec. 26 at 3:00 p.m. UTC.

Uranus image: NASA/ESA/CSA/ @stsci.edu/ @andrealuck.bsky.social CC BY
Earth image: ISS, @stim3on.bsky.social
Final machup of planetary science image of the year with "Uranus as seen by JWST" vs "Gigantic TLE above Mexico seen from the ISS". Uranus image description: Image of planet Uranus taken by the James Webb Space Telescope (JWST). Source: www.flickr.com/photos/192271236@N03/54879990600/sizes/o/ Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY Colourised image created processing data from: mast.stsci.edu Instrument: NIRCAM Title: CAL-NRC-421: NIRCam Linearity Characterization Target: Uranus Time: 2025-10-06 Filters: F150W2-F162M, F410M Observation ID: jw08975-o001_t001_nircam_f150w2-f162m-sub320, jw08975-o001_t001_nircam_clear-f410m-sub320 Description Earth: On July 3rd, astronaut Nichole Ayers photographed a gigantic jet from the ISS. These rare upward directed electrical discharges extend ~90-100 km high into the mesosphere. The jet originated from a thunderstorm over Northern Mexico, with city lights from South Texas and the green airglow layer visible along Earth’s limb. I processed this image from the RAW file, adjusting the color profile, white balance and contrast and applied Lightroom's machine learning denoise with low strength. The RAW was provided to me by Frankie Lucena, his analysis of the event, correlating it to measurements from the Geostationary Lightning mapper and ELF-VLF radio signals can be found here: https://spaceweathergallery2.com/indiv_upload.php?upload_id=224355 City annotations referenced from Riccardo Rossi: https://x.com/RikyUnreal/status/1942367538714734609 Original image listing in the NASA archive: https://eol.jsc.nasa.gov/SearchPhotos/photo.pl?mission=ISS073&roll=E&frame=281502 Credit: Nichole Ayers / NASA JSC / ESRS / Simeon Schmauß
December 24, 2025 at 3:27 PM
spacemarschall.net
The second finalist is:

Gigantic TLE* above Mexico seen from the ISS
*transient luminous event (Upper-atmospheric lightning/ionospheric lightning)

Taken on: July 3, 2025
Credit: ISS, Simeon Schmauß, @stim3on.bsky.social
Description by Simeon Schmauß (https://www.flickr.com/photos/semeion/54664805569/): On July 3rd, astronaut Nichole Ayers photographed a gigantic jet from the ISS. These rare upward directed electrical discharges extend ~90-100 km high into the mesosphere. The jet originated from a thunderstorm over Northern Mexico, with city lights from South Texas and the green airglow layer visible along Earth’s limb. I processed this image from the RAW file, adjusting the color profile, white balance and contrast and applied Lightroom's machine learning denoise with low strength. The RAW was provided to me by Frankie Lucena, his analysis of the event, correlating it to measurements from the Geostationary Lightning mapper and ELF-VLF radio signals can be found here: https://spaceweathergallery2.com/indiv_upload.php?upload_id=224355 City annotations referenced from Riccardo Rossi: https://x.com/RikyUnreal/status/1942367538714734609 Original image listing in the NASA archive: https://eol.jsc.nasa.gov/SearchPhotos/photo.pl?mission=ISS073&roll=E&frame=281502 Credit: Nichole Ayers / NASA JSC / ESRS / Simeon Schmauß
December 24, 2025 at 3:18 PM
spacemarschall.net
Here are the full results: blueskypolls.xyz/results.php?...
Full results of the second semi-final are shown as a list with bars that extend to the respective percentage of votes. "Gigantic TLE* above Mexico seen from the ISS" got 72.3% (34 votes), "Comet C/2025 A6 (Lemmon) and a meteor train" got 27.7% (10 votes). The bottom panel shows how the number of votes per day and total number of votes changed over time.
December 24, 2025 at 3:14 PM
spacemarschall.net
The results of the second semi-final are in and "Gigantic TLE above Mexico seen from the ISS" advances to the final with 72.3% of the vote (34 out of 47 votes).
Description by Simeon Schmauß (https://www.flickr.com/photos/semeion/54664805569/): On July 3rd, astronaut Nichole Ayers photographed a gigantic jet from the ISS. These rare upward directed electrical discharges extend ~90-100 km high into the mesosphere. The jet originated from a thunderstorm over Northern Mexico, with city lights from South Texas and the green airglow layer visible along Earth’s limb. I processed this image from the RAW file, adjusting the color profile, white balance and contrast and applied Lightroom's machine learning denoise with low strength. The RAW was provided to me by Frankie Lucena, his analysis of the event, correlating it to measurements from the Geostationary Lightning mapper and ELF-VLF radio signals can be found here: https://spaceweathergallery2.com/indiv_upload.php?upload_id=224355 City annotations referenced from Riccardo Rossi: https://x.com/RikyUnreal/status/1942367538714734609 Original image listing in the NASA archive: https://eol.jsc.nasa.gov/SearchPhotos/photo.pl?mission=ISS073&roll=E&frame=281502 Credit: Nichole Ayers / NASA JSC / ESRS / Simeon Schmauß
December 24, 2025 at 3:12 PM
spacemarschall.net
2/2 Comet C/2025 A6 (Lemmon) and a meteor train

Taken on: October 24, 2025
Credit: Massimo Penna

🗳️ vote link 1 post down
How many bright tails does Comet Lemmon have? Two. In the featured image it appears to have three, but why? The reason is that the zigzagging brown filament is a persistent meteor train that by luck appeared in front of the distant comet C/2025 A6 (Lemmon). A meteor train is the hot gas and fine dust that remains in the Earth's atmosphere and disperses in the seconds after a bright meteor flashes by. The two bright tails are the blue ion tail stretching across the image, and the white dust tail nearer the green coma on the upper left. All real comet tails originate from the nucleus of the comet inside the coma. The image was captured from Manciano, Italy. Source: https://apod.nasa.gov/apod/ap251027.html
December 21, 2025 at 3:11 PM
spacemarschall.net
1/2 Gigantic TLE* above Mexico seen from the ISS
*transient luminous event (Upper-atmospheric lightning/ionospheric lightning)

Taken on: July 3, 2025
Credit: ISS, Simeon Schmauß, @stim3on.bsky.social

🗳️ vote link 2 posts down
Description by Simeon Schmauß (https://www.flickr.com/photos/semeion/54664805569/): On July 3rd, astronaut Nichole Ayers photographed a gigantic jet from the ISS. These rare upward directed electrical discharges extend ~90-100 km high into the mesosphere. The jet originated from a thunderstorm over Northern Mexico, with city lights from South Texas and the green airglow layer visible along Earth’s limb. I processed this image from the RAW file, adjusting the color profile, white balance and contrast and applied Lightroom's machine learning denoise with low strength. The RAW was provided to me by Frankie Lucena, his analysis of the event, correlating it to measurements from the Geostationary Lightning mapper and ELF-VLF radio signals can be found here: https://spaceweathergallery2.com/indiv_upload.php?upload_id=224355 City annotations referenced from Riccardo Rossi: https://x.com/RikyUnreal/status/1942367538714734609 Original image listing in the NASA archive: https://eol.jsc.nasa.gov/SearchPhotos/photo.pl?mission=ISS073&roll=E&frame=281502 Credit: Nichole Ayers / NASA JSC / ESRS / Simeon Schmauß
December 21, 2025 at 3:11 PM
spacemarschall.net
2nd semi-final of ✨ #planetaryScience image of 2025✨
This round features Earth vs. Comets 🧪⚛️

🗳️ Voting ends on Wednesday, Dec. 24, at 3 p.m. UTC/4 p.m. CET/10 a.m. EST/7 a.m. PST/midnight JST.

Here are the two semi-finalists 🔽
Bracket for "BSky Planetary Science Image of 2025" contest, featuring small icons of 16 images grouped into four quarter-finals. There are finalist placeholders against a lunar surface backdrop.
December 21, 2025 at 3:11 PM
spacemarschall.net
The first finalist is:

Uranus as seen by JWST

Taken on: October 6, 2025
Credit: NASA/ESA/CSA/STScI/Andrea Luck CC BY, @stsci.edu, @andrealuck.bsky.social
Image of planet Uranus taken by the James Webb Space Telescope (JWST). Source: www.flickr.com/photos/192271236@N03/54879990600/sizes/o/ Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY Colourised image created processing data from: mast.stsci.edu NASA/ESA JWST Webb Space Telescope Instrument: NIRCAM Title: CAL-NRC-421: NIRCam Linearity Characterization Target: Uranus Time: 2025-10-06 Filters: F150W2-F162M, F410M Observation ID: jw08975-o001_t001_nircam_f150w2-f162m-sub320, jw08975-o001_t001_nircam_clear-f410m-sub320 Proposal PI: Varun Bajaj PI Institution: Space Telescope Science Institute Proposal ID: 8975 www.stsci.edu/jwst-program-info/program/?program=8975 Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY
December 21, 2025 at 3:07 PM
spacemarschall.net
Here are the full results: blueskypolls.xyz/results.php?...
Full results of the first semi-final are shown as a list with bars that extend to the respective percentage of votes. "Uranus as seen by JWST" got 66% (39 votes), "Dust devil on Mars seen by the Perseverance rover" got 34% (20 votes). The bottom panel shows how the number of votes per day and total number of votes changed over time.
December 21, 2025 at 3:05 PM
spacemarschall.net
The results of the first semi-final are in and "Uranus as seen by JWST" advances to the final with 66% of the vote (39 out of 59 votes).
Image of planet Uranus taken by the James Webb Space Telescope (JWST). Source: www.flickr.com/photos/192271236@N03/54879990600/sizes/o/ Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY Colourised image created processing data from: mast.stsci.edu NASA/ESA JWST Webb Space Telescope Instrument: NIRCAM Title: CAL-NRC-421: NIRCam Linearity Characterization Target: Uranus Time: 2025-10-06 Filters: F150W2-F162M, F410M Observation ID: jw08975-o001_t001_nircam_f150w2-f162m-sub320, jw08975-o001_t001_nircam_clear-f410m-sub320 Proposal PI: Varun Bajaj PI Institution: Space Telescope Science Institute Proposal ID: 8975 www.stsci.edu/jwst-program-info/program/?program=8975 Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY
December 21, 2025 at 3:02 PM
spacemarschall.net
🗳️ Four more hours to vote for your favourite semi-finalist (Mars vs. Uranus) for the Planetary Science Image of the Year. Vote link can be found in the thread here: bsky.app/profile/spac...

🧪 #SciComm #Mars #Uranus
Looking back over the rover's chassis (bottom-right) and dark parallel wheel tracks trailing back into the distance, where a dust devil - a tall narrow swirling cone of light dust and grit whipped up by thermal currents in the thin dusty air - plays across the ground in front of some low hills. Source: https://bsky.app/profile/martian-observer.art/post/3lqff6e45xs2j Credit: NASA/JPL-Caltech/MSSS/Martian-Observer @martian-observer.art Image of planet Uranus taken by the James Webb Space Telescope (JWST). Source: www.flickr.com/photos/192271236@N03/54879990600/sizes/o/ Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY Colourised image created processing data from: mast.stsci.edu NASA/ESA JWST Webb Space Telescope Instrument: NIRCAM Title: CAL-NRC-421: NIRCam Linearity Characterization Target: Uranus Time: 2025-10-06 Filters: F150W2-F162M, F410M Observation ID: jw08975-o001_t001_nircam_f150w2-f162m-sub320, jw08975-o001_t001_nircam_clear-f410m-sub320 Proposal PI: Varun Bajaj PI Institution: Space Telescope Science Institute Proposal ID: 8975 www.stsci.edu/jwst-program-info/program/?program=8975 Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY
December 21, 2025 at 11:13 AM
spacemarschall.net
The first semi-final is super close (50%/50%) as of right now. Will Mars or Uranus reach the final? There is still time to vote in this thread: bsky.app/profile/spac...
Looking back over the rover's chassis (bottom-right) and dark parallel wheel tracks trailing back into the distance, where a dust devil - a tall narrow swirling cone of light dust and grit whipped up by thermal currents in the thin dusty air - plays across the ground in front of some low hills. Source: https://bsky.app/profile/martian-observer.art/post/3lqff6e45xs2j Image of planet Uranus taken by the James Webb Space Telescope (JWST). Source: www.flickr.com/photos/192271236@N03/54879990600/sizes/o/ Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY Colourised image created processing data from: mast.stsci.edu NASA/ESA JWST Webb Space Telescope Instrument: NIRCAM Title: CAL-NRC-421: NIRCam Linearity Characterization Target: Uranus Time: 2025-10-06 Filters: F150W2-F162M, F410M Observation ID: jw08975-o001_t001_nircam_f150w2-f162m-sub320, jw08975-o001_t001_nircam_clear-f410m-sub320 Proposal PI: Varun Bajaj PI Institution: Space Telescope Science Institute Proposal ID: 8975 www.stsci.edu/jwst-program-info/program/?program=8975 Credit: NASA/ESA/CSA/STScI/AndreaLuck CC BY
December 19, 2025 at 7:44 AM