Dr. Raphael Marschall
@spacemarschall.net
Associate Professor of Experimental Physics at the @unibe.ch
Co-I of ESA's Comet Interceptor, collaborator on NASA's Lucy and ESA's Rosetta missions.
www.spaceMarschall.net
(he/him)🇨🇭🇺🇸🇫🇷
#asteroids #comets #protoplanetarydisks #planetaryScience 🧪🔭🚀🛰️☄️
Co-I of ESA's Comet Interceptor, collaborator on NASA's Lucy and ESA's Rosetta missions.
www.spaceMarschall.net
(he/him)🇨🇭🇺🇸🇫🇷
#asteroids #comets #protoplanetarydisks #planetaryScience 🧪🔭🚀🛰️☄️
Pinned
Dr. Raphael Marschall
@spacemarschall.net
· Nov 14
Hello to all new followers! I'm a 🇨🇭 physicist and planetary scientist at the Observatory in Nice 🇫🇷. I study asteroids, comets, and similar bodies and how they formed/evolved. This helps us understand how our Solar System formed. I'm also involved in several space missions.
#planetaryScience 🔭🧪🚀🛰️☄️🪨
#planetaryScience 🔭🧪🚀🛰️☄️🪨
Reposted by Dr. Raphael Marschall
It still seems unreal to me that humans will soon be flying back to the moon! They will be returning to Earth at a speed of 40.000 km/h, the fastest ever reentry of a crewed spacecraft.
This remastered video shows a similar reentry from the #Artemis 1 mission back in 2022 at 9x speed. 🔭🧪
This remastered video shows a similar reentry from the #Artemis 1 mission back in 2022 at 9x speed. 🔭🧪
February 9, 2026 at 4:13 PM
It still seems unreal to me that humans will soon be flying back to the moon! They will be returning to Earth at a speed of 40.000 km/h, the fastest ever reentry of a crewed spacecraft.
This remastered video shows a similar reentry from the #Artemis 1 mission back in 2022 at 9x speed. 🔭🧪
This remastered video shows a similar reentry from the #Artemis 1 mission back in 2022 at 9x speed. 🔭🧪
Reposted by Dr. Raphael Marschall
I've ~stabilized a short piece. Awesome video! 👍
February 9, 2026 at 8:36 PM
I've ~stabilized a short piece. Awesome video! 👍
What was I looking down on here?
A) clouds
B) ocean
C) snow dunes
It was really quite the view 🤩
A) clouds
B) ocean
C) snow dunes
It was really quite the view 🤩
February 9, 2026 at 8:53 PM
What was I looking down on here?
A) clouds
B) ocean
C) snow dunes
It was really quite the view 🤩
A) clouds
B) ocean
C) snow dunes
It was really quite the view 🤩
Just arrived in Bremen, Germany, to go work on an ESA M8 mission proposal and the airport here has a beautiful model of the International Space Station (ISS) 🤩
February 9, 2026 at 8:35 AM
Just arrived in Bremen, Germany, to go work on an ESA M8 mission proposal and the airport here has a beautiful model of the International Space Station (ISS) 🤩
It‘s a beautiful day here in Bern and my first day as a professor at the @unibe.ch. Excited but also humbled about what is to come.
Wishing everyone a good start into this new week!
Wishing everyone a good start into this new week!
February 2, 2026 at 7:59 AM
It‘s a beautiful day here in Bern and my first day as a professor at the @unibe.ch. Excited but also humbled about what is to come.
Wishing everyone a good start into this new week!
Wishing everyone a good start into this new week!
Reposted by Dr. Raphael Marschall
You may have seen pictures, but have you ever seen video of a gigantic jet #TLE from space?
Astronaut Jeanette Epps captured this incredible sequence on July 20th, 2024 for the DTU/@science.esa.int Thor-Davis experiment. 🧪🔭
youtu.be/xN2J7_rOBJY
Credit: ESA/NASA/J. Epps
Processing: Simeon Schmauß
Astronaut Jeanette Epps captured this incredible sequence on July 20th, 2024 for the DTU/@science.esa.int Thor-Davis experiment. 🧪🔭
youtu.be/xN2J7_rOBJY
Credit: ESA/NASA/J. Epps
Processing: Simeon Schmauß
January 30, 2026 at 9:09 PM
You may have seen pictures, but have you ever seen video of a gigantic jet #TLE from space?
Astronaut Jeanette Epps captured this incredible sequence on July 20th, 2024 for the DTU/@science.esa.int Thor-Davis experiment. 🧪🔭
youtu.be/xN2J7_rOBJY
Credit: ESA/NASA/J. Epps
Processing: Simeon Schmauß
Astronaut Jeanette Epps captured this incredible sequence on July 20th, 2024 for the DTU/@science.esa.int Thor-Davis experiment. 🧪🔭
youtu.be/xN2J7_rOBJY
Credit: ESA/NASA/J. Epps
Processing: Simeon Schmauß
Reposted by Dr. Raphael Marschall
Hi y'all
You still have a few days to apply for our open professor position in planetary science in Bern, Switzerland. See more details below! For any questions, feel free to reach out to me.
🔭🧪⚛️#planetSci
You still have a few days to apply for our open professor position in planetary science in Bern, Switzerland. See more details below! For any questions, feel free to reach out to me.
🔭🧪⚛️#planetSci
Hi #planetaryScience folks, we have an open position for a *Professor in Planetary Sciences* at the Space Research & Planetary Sciences Division of the @unibe.ch.
Application deadline: *Jan 31, 2026*
Full ad: ohws.prospective.ch/public/v1/jo...
Reach out to me if you have any questions!
🧵 1/5
Application deadline: *Jan 31, 2026*
Full ad: ohws.prospective.ch/public/v1/jo...
Reach out to me if you have any questions!
🧵 1/5
Uni Bern: Professor in Planetary Sciences
The Division of Space Research and Planetary Sciences of the Physics Institute, University of Bern, Switzerland, invites applications for a full-time position as a Professor in Planetary Sciences.
ohws.prospective.ch
January 26, 2026 at 8:54 AM
Hi y'all
You still have a few days to apply for our open professor position in planetary science in Bern, Switzerland. See more details below! For any questions, feel free to reach out to me.
🔭🧪⚛️#planetSci
You still have a few days to apply for our open professor position in planetary science in Bern, Switzerland. See more details below! For any questions, feel free to reach out to me.
🔭🧪⚛️#planetSci
Hi y'all
You still have a few days to apply for our open professor position in planetary science in Bern, Switzerland. See more details below! For any questions, feel free to reach out to me.
🔭🧪⚛️#planetSci
You still have a few days to apply for our open professor position in planetary science in Bern, Switzerland. See more details below! For any questions, feel free to reach out to me.
🔭🧪⚛️#planetSci
Hi #planetaryScience folks, we have an open position for a *Professor in Planetary Sciences* at the Space Research & Planetary Sciences Division of the @unibe.ch.
Application deadline: *Jan 31, 2026*
Full ad: ohws.prospective.ch/public/v1/jo...
Reach out to me if you have any questions!
🧵 1/5
Application deadline: *Jan 31, 2026*
Full ad: ohws.prospective.ch/public/v1/jo...
Reach out to me if you have any questions!
🧵 1/5
Uni Bern: Professor in Planetary Sciences
The Division of Space Research and Planetary Sciences of the Physics Institute, University of Bern, Switzerland, invites applications for a full-time position as a Professor in Planetary Sciences.
ohws.prospective.ch
January 26, 2026 at 8:54 AM
Hi y'all
You still have a few days to apply for our open professor position in planetary science in Bern, Switzerland. See more details below! For any questions, feel free to reach out to me.
🔭🧪⚛️#planetSci
You still have a few days to apply for our open professor position in planetary science in Bern, Switzerland. See more details below! For any questions, feel free to reach out to me.
🔭🧪⚛️#planetSci
Reposted by Dr. Raphael Marschall
On Monday, we're going to be arXiv-official! 🔭☄️
We just submitted a short paper outlining our project to the arXiv 🥳
We just submitted a short paper outlining our project to the arXiv 🥳
January 23, 2026 at 3:42 PM
On Monday, we're going to be arXiv-official! 🔭☄️
We just submitted a short paper outlining our project to the arXiv 🥳
We just submitted a short paper outlining our project to the arXiv 🥳
Are you looking for a postdoc position working on asteroids and comets? Would it help if it's in a beautiful place in southern France? If yes, then consider applying to the following position of my colleague Benoit Carry at the Observatory in Nice:
euraxess.ec.europa.eu/jobs/402212
#planetSci
euraxess.ec.europa.eu/jobs/402212
#planetSci
Post-doc on properties of Solar system small bodies
The small bodies of our Solar system (comets and asteroids) are the remnants of the building blocs that accreted to form the planets. The suite of events that occurred during planet formation left pri...
euraxess.ec.europa.eu
January 21, 2026 at 4:38 PM
Are you looking for a postdoc position working on asteroids and comets? Would it help if it's in a beautiful place in southern France? If yes, then consider applying to the following position of my colleague Benoit Carry at the Observatory in Nice:
euraxess.ec.europa.eu/jobs/402212
#planetSci
euraxess.ec.europa.eu/jobs/402212
#planetSci
Reposted by Dr. Raphael Marschall
We're so excited to share the results of the ALMA large program ARKS that studied the distribution of dust and gas in a sample of 24 exoKuiper belts. With @lucaroundtheworld.bsky.social, Meredith Hughes and a large collaboration, we just published 10 papers presenting our first results arkslp.org
January 20, 2026 at 9:18 AM
We're so excited to share the results of the ALMA large program ARKS that studied the distribution of dust and gas in a sample of 24 exoKuiper belts. With @lucaroundtheworld.bsky.social, Meredith Hughes and a large collaboration, we just published 10 papers presenting our first results arkslp.org
Big #planetSci news: @cometinterceptor.bsky.social is no longer planned to launch alongside the Ariel mission.
Michael Küppers, ESA project scientist for CI at the SBAG meeting: Working to identify a launch opportunity for Aug. 2028 - July 2029.
spacenews.com/esas-comet-i...
Michael Küppers, ESA project scientist for CI at the SBAG meeting: Working to identify a launch opportunity for Aug. 2028 - July 2029.
spacenews.com/esas-comet-i...
ESA’s Comet Interceptor mission moves up launch
A delay in one European Space Agency mission is creating an opportunity for an earlier, and more capable, launch for another ESA spacecraft.
spacenews.com
January 14, 2026 at 8:34 PM
Big #planetSci news: @cometinterceptor.bsky.social is no longer planned to launch alongside the Ariel mission.
Michael Küppers, ESA project scientist for CI at the SBAG meeting: Working to identify a launch opportunity for Aug. 2028 - July 2029.
spacenews.com/esas-comet-i...
Michael Küppers, ESA project scientist for CI at the SBAG meeting: Working to identify a launch opportunity for Aug. 2028 - July 2029.
spacenews.com/esas-comet-i...
Can highly recommend submitting a proposal in response to this call by @issibern.ch! Successful proposals allow you to meet twice for one week in Bern with a small group of researchers of your choosing to discuss and work on your favorite science topic.
I also encourage ECR to apply!
#panetSci 🔭
I also encourage ECR to apply!
#panetSci 🔭
Open Call for Proposals for International Teams in Space and Earth Sciences
The International Space Science Institute (ISSI) and ISSI-BJ invite proposals for establishing International Teams to conduct collaborative research in the Space and Earth Sciences at their respective meeting facilities.
The International Space Science Institute (ISSI) and ISSI-BJ invite proposals for establishing International Teams to conduct collaborative research in the Space and Earth Sciences at their respective meeting facilities.
January 14, 2026 at 11:01 AM
Can highly recommend submitting a proposal in response to this call by @issibern.ch! Successful proposals allow you to meet twice for one week in Bern with a small group of researchers of your choosing to discuss and work on your favorite science topic.
I also encourage ECR to apply!
#panetSci 🔭
I also encourage ECR to apply!
#panetSci 🔭
It's "very unlikely" NASA will be able to recover the MAVEN Mars orbiter, NASA planetary science division director Louise Prockter says at the Small Bodies Assessment Group meeting this morning. Efforts to restore contact will resume Friday, after solar conjunction ends.
January 13, 2026 at 4:53 PM
Reposted by Dr. Raphael Marschall
After reviewing nearly 200 applications from prospective grad students and postdocs over the past few months for a couple different 🧪⚒️ postings, here are some tips, at least as they apply to North American positions. I hope they help future applicants. Share with your networks. 🧵
January 4, 2026 at 2:17 PM
After reviewing nearly 200 applications from prospective grad students and postdocs over the past few months for a couple different 🧪⚒️ postings, here are some tips, at least as they apply to North American positions. I hope they help future applicants. Share with your networks. 🧵
Reposted by Dr. Raphael Marschall
Heute habe ich ein Video von einem der für mich beeindruckendsten Physik-Miniversuche gemacht. Dazu habe ich einen Wanderstiefel an seinen beiden Schnürsenkeln aufgehängt. Eine doppelte Drehung des Stiefels lässt sich rückgängig machen, ohne die Orientierung des Stiefels zu verändern! 1/
January 4, 2026 at 2:42 PM
Heute habe ich ein Video von einem der für mich beeindruckendsten Physik-Miniversuche gemacht. Dazu habe ich einen Wanderstiefel an seinen beiden Schnürsenkeln aufgehängt. Eine doppelte Drehung des Stiefels lässt sich rückgängig machen, ohne die Orientierung des Stiefels zu verändern! 1/
Reposted by Dr. Raphael Marschall
The calendar changes— on the one hand, an entirely arbitrary chronological signifier. On the other, an absolutely necessary chance to catch our breath, renew our energies, and look ahead. Let’s go!
January 1, 2026 at 5:44 AM
The calendar changes— on the one hand, an entirely arbitrary chronological signifier. On the other, an absolutely necessary chance to catch our breath, renew our energies, and look ahead. Let’s go!
Reposted by Dr. Raphael Marschall
“Produce your own dream. If you want to save Peru, go save Peru. … I can’t wake you up. You can wake you up. I can’t cure you. You can cure you.”
- John Lennon, 1980
(Annual post. My favorite John Lennon quote, btw)
#HappyNewYear2026
- John Lennon, 1980
(Annual post. My favorite John Lennon quote, btw)
#HappyNewYear2026
January 1, 2026 at 5:19 AM
“Produce your own dream. If you want to save Peru, go save Peru. … I can’t wake you up. You can wake you up. I can’t cure you. You can cure you.”
- John Lennon, 1980
(Annual post. My favorite John Lennon quote, btw)
#HappyNewYear2026
- John Lennon, 1980
(Annual post. My favorite John Lennon quote, btw)
#HappyNewYear2026
As we embark on this new year, may it bring you joy, health and fulfillment. I wish everyone all the best for 2026 ✨
December 31, 2025 at 10:07 PM
As we embark on this new year, may it bring you joy, health and fulfillment. I wish everyone all the best for 2026 ✨
This image, taken by astronaut Nichole Ayers, is also a finalist in our ✨Planetary Science Image of the Year✨! You can still vote for it in this thread: bsky.app/profile/spac...
Can you see fireworks from space? 🎆
You can if you get lucky, but nature always puts on the best show.
We're celebrating the New Year with this stunning sight from the International Space Station: a giant blue jet and red sprites shooting upwards from a thunderstorm.
🔗 www.esa.int/ESA_Multimed...
You can if you get lucky, but nature always puts on the best show.
We're celebrating the New Year with this stunning sight from the International Space Station: a giant blue jet and red sprites shooting upwards from a thunderstorm.
🔗 www.esa.int/ESA_Multimed...
Fireworks from space
Fireworks from space
www.esa.int
December 30, 2025 at 10:15 AM
This image, taken by astronaut Nichole Ayers, is also a finalist in our ✨Planetary Science Image of the Year✨! You can still vote for it in this thread: bsky.app/profile/spac...
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...
🧪⚛️
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...
🧪⚛️
December 29, 2025 at 9:22 PM
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...
🧪⚛️
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...
🧪⚛️
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...
Credit: NASA/JPL-Caltech/SwRI/MSSS/Kevin M. Gill,
@kevinmgill.bsky.social
Who will win this year? Vote here: bsky.app/profile/spac...
December 29, 2025 at 2:13 PM
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...
Credit: NASA/JPL-Caltech/SwRI/MSSS/Kevin M. Gill,
@kevinmgill.bsky.social
Who will win this year? Vote here: bsky.app/profile/spac...
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
If you like this image, you can vote for it here: bsky.app/profile/spac...
🧪⚛️ #sciComm #planetSci
December 29, 2025 at 2:06 PM
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
If you like this image, you can vote for it here: bsky.app/profile/spac...
🧪⚛️ #sciComm #planetSci
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
If you like it too, you can vote for it here:
bsky.app/profile/spac...
🧪⚛️ #sciComm #planetSci
December 29, 2025 at 1:55 PM
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
If you like it too, you can vote for it here:
bsky.app/profile/spac...
🧪⚛️ #sciComm #planetSci
Reposted by Dr. Raphael Marschall
Hey Martians, did I mention we now also have a video of epic Phobos passing over a Martian dust storm near Pavonis Mons? 🌪️🌋🥔
Video & full info: flic.kr/p/2rNN8wk
Credit: ESA/DLR/FUBerlin/AndreaLuck CC BY
@esa.int Mars Express HRSC
300 MP Photo quoted below
Easy zoom: easyzoom.com/image/674026
Video & full info: flic.kr/p/2rNN8wk
Credit: ESA/DLR/FUBerlin/AndreaLuck CC BY
@esa.int Mars Express HRSC
300 MP Photo quoted below
Easy zoom: easyzoom.com/image/674026
December 27, 2025 at 2:01 PM
Hey Martians, did I mention we now also have a video of epic Phobos passing over a Martian dust storm near Pavonis Mons? 🌪️🌋🥔
Video & full info: flic.kr/p/2rNN8wk
Credit: ESA/DLR/FUBerlin/AndreaLuck CC BY
@esa.int Mars Express HRSC
300 MP Photo quoted below
Easy zoom: easyzoom.com/image/674026
Video & full info: flic.kr/p/2rNN8wk
Credit: ESA/DLR/FUBerlin/AndreaLuck CC BY
@esa.int Mars Express HRSC
300 MP Photo quoted below
Easy zoom: easyzoom.com/image/674026