Sascha Trippe 🛰️ 사샤 트리페
@saschatrippe.bsky.social
⭐️ Astronomer – MSc, PhD, Professor (교수)
⭐️ Seoul National University / 서울대학교
⭐️ Black holes, AGN, radio astronomy, VLBI
⭐️ Born at 332 ppm CO₂
⭐️ Trigger warning: math, physics, irony
⭐️ Signature: (+,-,-,-)
⭐️ Seoul National University / 서울대학교
⭐️ Black holes, AGN, radio astronomy, VLBI
⭐️ Born at 332 ppm CO₂
⭐️ Trigger warning: math, physics, irony
⭐️ Signature: (+,-,-,-)
Pinned
Reposted by Sascha Trippe 🛰️ 사샤 트리페
28 years later and this comic is still just as accurate today, as it was all those years ago… #ByeBye2025 #CalvinandHobbes
January 1, 2026 at 2:00 AM
28 years later and this comic is still just as accurate today, as it was all those years ago… #ByeBye2025 #CalvinandHobbes
Last sunset of the year.
December 31, 2025 at 9:16 AM
Last sunset of the year.
Künstliche Intelligenz anno 1965: Schachcomputer 🤖
Podcast: Revolution der Denkweisen: Künstliche Intelligenz übernimmt
KI - mehr als nur Maschinen! Eine spannende Reise in die Welt der intelligenten Automaten. Heinrich Schiemann im Gespräch mit dem Informationstheoretiker Karl Steinbuch.
www.ardaudiothek.de
December 30, 2025 at 2:45 PM
Künstliche Intelligenz anno 1965: Schachcomputer 🤖
Looks like an opportunity for Europe @ec.europa.eu 🔋
Korean battery manufacturers find themselves at a critical crossroads, as global clients — reeling from a prolonged slump in global EV demand — have walked away from previously pledged multi-billion-dollar contracts.
koreajoongangdaily.joins.com/news/2025-12...
koreajoongangdaily.joins.com/news/2025-12...
Exodus of U.S. clients pushes Korean battery makers to the brink
Korean battery manufacturers find themselves at a critical crossroads, as global clients — reeling from a prolonged slump in global EV demand — have walked away from previously pledged…
koreajoongangdaily.joins.com
December 27, 2025 at 6:43 AM
Looks like an opportunity for Europe @ec.europa.eu 🔋
Reposted by Sascha Trippe 🛰️ 사샤 트리페
Merry Christmas everyone! 🎄⚒️ @berkeleymews.bsky.social
December 24, 2025 at 12:17 PM
Merry Christmas everyone! 🎄⚒️ @berkeleymews.bsky.social
Regular reminder: if you rely on internet and financial services from a single country, that country's government can disconnect you overnight.
Use open source software, keep local backups of everything important, use different email providers, set up alternative payment services, ...
Use open source software, keep local backups of everything important, use different email providers, set up alternative payment services, ...
State Department imposes sanctions on former EU official, disinformation group leaders for ‘censorship’
(CNN) — The US State Department on Tuesday imposed visa sanctions on a former top European Union official and employees of organizations that combat disinformation for alleged censorship – sharply
www.kten.com
December 24, 2025 at 1:50 AM
Regular reminder: if you rely on internet and financial services from a single country, that country's government can disconnect you overnight.
Use open source software, keep local backups of everything important, use different email providers, set up alternative payment services, ...
Use open source software, keep local backups of everything important, use different email providers, set up alternative payment services, ...
Reposted by Sascha Trippe 🛰️ 사샤 트리페
Seems like it's worth posting this one again.
Why Do Historians Still Have To Go To Archives?
Why do historians go to archives? Hasn’t everything already been digitized?
contingentmagazine.org
December 21, 2025 at 10:16 PM
Seems like it's worth posting this one again.
Careless Whisper appears to have been an issue (at least) for @signal.org and Whatsapp for over a year now. 🧪🤖
arxiv.org/abs/2411.11194
arxiv.org/abs/2411.11194
Careless Whisper: Exploiting Silent Delivery Receipts to Monitor Users on Mobile Instant Messengers
With over 3 billion users globally, mobile instant messaging apps have become indispensable for both personal and professional communication. Besides plain messaging, many services implement additiona...
arxiv.org
December 21, 2025 at 11:45 AM
Careless Whisper appears to have been an issue (at least) for @signal.org and Whatsapp for over a year now. 🧪🤖
arxiv.org/abs/2411.11194
arxiv.org/abs/2411.11194
My new favorite disclaimer.
December 21, 2025 at 7:50 AM
My new favorite disclaimer.
Gentle reminder: the onion constant is 0.557... 🧪🧅
A solution to the Onion Problem of J. Kenji López-Alt
Kenji López-Alt posed a mathematical problem on his YouTube channel about how to best cut an onion. I present a detailed solution.
medium.com
December 15, 2025 at 4:09 AM
Gentle reminder: the onion constant is 0.557... 🧪🧅
I am an astronomer and I approve this message. 🔭
December 11, 2025 at 10:08 PM
I am an astronomer and I approve this message. 🔭
Regular reminder:
total matter / baryonic matter
= Ω_m / Ω_b
= 6.357 +/- 0.053
= 2π
within 1.4σ & within 1.2%
#Cosmology is easy 😎
🔭🧪
total matter / baryonic matter
= Ω_m / Ω_b
= 6.357 +/- 0.053
= 2π
within 1.4σ & within 1.2%
#Cosmology is easy 😎
🔭🧪
Planck 2018 results. VI. Cosmological parameters
We present cosmological parameter results from the final full-mission Planck measurements of the CMB anisotropies. We find good consistency with the standard spatially-flat 6-parameter $Λ$CDM cosmolog...
arxiv.org
December 10, 2025 at 5:13 AM
Regular reminder:
total matter / baryonic matter
= Ω_m / Ω_b
= 6.357 +/- 0.053
= 2π
within 1.4σ & within 1.2%
#Cosmology is easy 😎
🔭🧪
total matter / baryonic matter
= Ω_m / Ω_b
= 6.357 +/- 0.053
= 2π
within 1.4σ & within 1.2%
#Cosmology is easy 😎
🔭🧪
Miller–Urey experiment, 2025 edition
🧪🦠🌏
🧪🦠🌏
Simulations of Earth’s Archean Eon show that UV irradiation of planetary gas mixtures at ambient temperature and pressure can produce a variety of organosulfur molecules, such as cysteine, which are important to biological life. In PNAS: https://ow.ly/l9jw50XCZlN
December 6, 2025 at 2:12 AM
Miller–Urey experiment, 2025 edition
🧪🦠🌏
🧪🦠🌏
Came across some old (from 2011) photos of this sculpture on the roof of the Ghibli Museum in Tokyo. I am reasonably certain that the script is Old Persian cuneiform, but is this actually a meaningful text? Or just a random set of characters?
Does anyone know? Maybe @moudhy.bsky.social ?
🏺🗿🤔
Does anyone know? Maybe @moudhy.bsky.social ?
🏺🗿🤔
December 3, 2025 at 9:28 AM
Came across some old (from 2011) photos of this sculpture on the roof of the Ghibli Museum in Tokyo. I am reasonably certain that the script is Old Persian cuneiform, but is this actually a meaningful text? Or just a random set of characters?
Does anyone know? Maybe @moudhy.bsky.social ?
🏺🗿🤔
Does anyone know? Maybe @moudhy.bsky.social ?
🏺🗿🤔
Reposted by Sascha Trippe 🛰️ 사샤 트리페
🚀Liftoff for Europe's #VegaC rocket, propelling Kompsat-7 Earth-observer to a sun-synchronous orbit, 1 December 14:21 local time at Europe's Spaceport in French Guiana (17:21 GMT, 18:21 CET), flight #VV28.
www.esa.int/Enabling_Sup...
www.esa.int/Enabling_Sup...
December 2, 2025 at 6:32 AM
🚀Liftoff for Europe's #VegaC rocket, propelling Kompsat-7 Earth-observer to a sun-synchronous orbit, 1 December 14:21 local time at Europe's Spaceport in French Guiana (17:21 GMT, 18:21 CET), flight #VV28.
www.esa.int/Enabling_Sup...
www.esa.int/Enabling_Sup...
Yes, yes, and yes. #Democracy
My guide to populist-proofing your democracy...
... before it's too late.
timothygartonash.substack.com
November 29, 2025 at 9:17 AM
Yes, yes, and yes. #Democracy
Reposted by Sascha Trippe 🛰️ 사샤 트리페
A *huge* vaccine victory. I've been writing on this for years; Australia has seen remarkable progress in cervical cancer prevention with the HPV vaccine. I love seeing science triumph like this.
Australia recorded ZERO cases of cervical cancer in women under 25 for the first time since they started tracking the cancer in the 80s.
This is the power of vaccines.
The HPV vaccine is extremely effective at preventing cancer.
Viruses can be oncogenic. Get your vaccines and protect yourself!
This is the power of vaccines.
The HPV vaccine is extremely effective at preventing cancer.
Viruses can be oncogenic. Get your vaccines and protect yourself!
newsGP - Australia set for world-first cervical cancer elimination
Vaccination programs have played a key role, and GPs remain ‘instrumental’ in boosting screening rates to reach the 2035 target.
www1.racgp.org.au
November 27, 2025 at 6:12 PM
A *huge* vaccine victory. I've been writing on this for years; Australia has seen remarkable progress in cervical cancer prevention with the HPV vaccine. I love seeing science triumph like this.
Great news! 🧪🔭🛰️🚀
(7th LD) S. Korea confirms successful 4th Nuri rocket launch; main satellite establishes contact | Yonhap News Agency
(ATTN: RECASTS 2nd para to correct distance to Goheung from Seoul to 330km; UPDATES with m...
m-en.yna.co.kr
November 27, 2025 at 1:49 PM
Great news! 🧪🔭🛰️🚀
Reposted by Sascha Trippe 🛰️ 사샤 트리페
A (dark matter) Space Oddity:
We have an exciting new paper led by @pengfeili.bsky.social: arxiv.org/abs/2511.17705
He used the best data on the Milky Way rotation curve from Gaia to infer not the current, but the *primordial* dark-matter halo of the Galaxy.
And it is quite odd. 🧪🔭☄️
1/6
We have an exciting new paper led by @pengfeili.bsky.social: arxiv.org/abs/2511.17705
He used the best data on the Milky Way rotation curve from Gaia to infer not the current, but the *primordial* dark-matter halo of the Galaxy.
And it is quite odd. 🧪🔭☄️
1/6
The odd primordial halo of the Milky Way implied by Gaia. A shallow core, but a steep decline
Primordial dark matter halos are well understood from cold dark matter-only simulations. Since they can contract significantly as baryons settle into their centers, direct comparisons with observed ga...
arxiv.org
November 26, 2025 at 1:59 PM
A (dark matter) Space Oddity:
We have an exciting new paper led by @pengfeili.bsky.social: arxiv.org/abs/2511.17705
He used the best data on the Milky Way rotation curve from Gaia to infer not the current, but the *primordial* dark-matter halo of the Galaxy.
And it is quite odd. 🧪🔭☄️
1/6
We have an exciting new paper led by @pengfeili.bsky.social: arxiv.org/abs/2511.17705
He used the best data on the Milky Way rotation curve from Gaia to infer not the current, but the *primordial* dark-matter halo of the Galaxy.
And it is quite odd. 🧪🔭☄️
1/6
Interesting. For comparison: German military law states that soldiers *are not allowed to* follow illegal orders.
www.koreaherald.com/article/1062...
www.koreaherald.com/article/1062...
S. Korea pushes for soldiers, civil servants to have right to refuse unlawful orders
The South Korean government is moving to remove long-standing obedience requirements for civil servants and soldiers, on the heels of former President Yoon Suk
www.koreaherald.com
November 25, 2025 at 10:03 PM
Interesting. For comparison: German military law states that soldiers *are not allowed to* follow illegal orders.
www.koreaherald.com/article/1062...
www.koreaherald.com/article/1062...
Please excuse my coughing. #AirPollution
November 24, 2025 at 11:22 PM
Please excuse my coughing. #AirPollution
Reposted by Sascha Trippe 🛰️ 사샤 트리페
A team demonstrated that more than 80% of moss spores left on the outside of the ISS for nine months and brought back to Earth germinated normally. The findings confirm that moss spores, already known to be hardy, handily survive the stresses of near-Earth orbit. 🧪 👩🔬
Learn more:
Learn more:
Moss Can Survive the Harsh Conditions of Space
A months-long sojourn outside the International Space Station didn't phase these plants.
time.com
November 21, 2025 at 8:00 PM
A team demonstrated that more than 80% of moss spores left on the outside of the ISS for nine months and brought back to Earth germinated normally. The findings confirm that moss spores, already known to be hardy, handily survive the stresses of near-Earth orbit. 🧪 👩🔬
Learn more:
Learn more:
Nice #EAVN25 poster by my student Baek Doohyon with tentative results on Faraday rotation in the jet of 3C279.
#RadioAstronomy
#Extragalactic
🧪🔭
#RadioAstronomy
#Extragalactic
🧪🔭
November 18, 2025 at 12:35 PM
Nice #EAVN25 poster by my student Baek Doohyon with tentative results on Faraday rotation in the jet of 3C279.
#RadioAstronomy
#Extragalactic
🧪🔭
#RadioAstronomy
#Extragalactic
🧪🔭
November 18, 2025 at 8:43 AM
Nice talk by my "grandstudent" Taeho Kang (UNIST) on the expected imaging capabilities of our #CapellaVLBI 4-station space VLBI network.
#RadioAstronomy #EAVN25
🧪🔭📡🛰️🚀
#RadioAstronomy #EAVN25
🧪🔭📡🛰️🚀
November 17, 2025 at 8:42 AM
Nice talk by my "grandstudent" Taeho Kang (UNIST) on the expected imaging capabilities of our #CapellaVLBI 4-station space VLBI network.
#RadioAstronomy #EAVN25
🧪🔭📡🛰️🚀
#RadioAstronomy #EAVN25
🧪🔭📡🛰️🚀