Jonas Suni
@jonassuni.bsky.social
Space Physics | Postdoctoral Researcher at the University of Helsinki | Magnetosheath jets etc. | Enjoys photography, cycling, and cooking 🏳️🌈
Reposted by Jonas Suni
![Comic. [Two people flailing high in the air. Three people on the ground running ahead of them. Arrows and a dotted line indicate that this second group is within roughly one body length of the surface.] [caption] The “ground effect” explains why sprinters can run most efficiently if they stay within roughly one body length of the surface.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreihcig3lsvbr35da6d4ylsw4wwdj2pzkrcplyvuot5tkx6siqxxfim)
October 2, 2026 at 1:43 AM
Reposted by Jonas Suni
Eva Krämer, PhD student at @umeauniversitet.bsky.social, nailed her thesis to the wall at the university library today. It is a tradition that each PhD student must do that 3 weeks before their thesis defence. The thesis is also found here: urn.kb.se/resolve?urn=...
September 4, 2026 at 8:46 AM
Eva Krämer, PhD student at @umeauniversitet.bsky.social, nailed her thesis to the wall at the university library today. It is a tradition that each PhD student must do that 3 weeks before their thesis defence. The thesis is also found here: urn.kb.se/resolve?urn=...
Reposted by Jonas Suni
Long time no update — I wrote a paper in my postdoc! Turbulence saves you money (through space weather forecasting)!
doi.org/10.1029/2026...
doi.org/10.1029/2026...
Beyond Mean Solar Wind Conditions: Turbulence‐Aware Forecasting of the AE Index
Including solar wind turbulence parameters improves short-term forecasts of auroral electrojet index compared to models using average conditions alone
Improved forecasts reduce false alarms and b...
doi.org
August 3, 2026 at 9:51 PM
Long time no update — I wrote a paper in my postdoc! Turbulence saves you money (through space weather forecasting)!
doi.org/10.1029/2026...
doi.org/10.1029/2026...
Reposted by Jonas Suni
NASA’s Juno observations show relativistic electron acceleration at the bow shock of Jupiter and establish a universal scaling law linking shock size to maximum cosmic ray energy, according to a paper in Nature. go.nature.com/49ArfuL 🔭🧪
June 15, 2026 at 1:16 AM
NASA’s Juno observations show relativistic electron acceleration at the bow shock of Jupiter and establish a universal scaling law linking shock size to maximum cosmic ray energy, according to a paper in Nature. go.nature.com/49ArfuL 🔭🧪
Reposted by Jonas Suni
New in @nature.com : Using #NASA 's Juno and JEDI instrument from @jhuapl.bsky.social we show Jupiter's foreshock accelerates electrons to near light speed. Using our solar system observations, we built a scaling law from planetary shocks to supernova remnants. www.nature.com/articles/s41...
Relativistic electron acceleration at the bow shock of Jupiter and beyond - Nature
NASA’s Juno observations show relativistic electron acceleration at the bow shock of Jupiter and establish a universal scaling law linking shock size to maximum cosmic ray energy.
www.nature.com
June 3, 2026 at 4:48 PM
New in @nature.com : Using #NASA 's Juno and JEDI instrument from @jhuapl.bsky.social we show Jupiter's foreshock accelerates electrons to near light speed. Using our solar system observations, we built a scaling law from planetary shocks to supernova remnants. www.nature.com/articles/s41...
Reposted by Jonas Suni
🚀 Smile has launched! This joint mission between ESA and the Chinese Academy of Sciences is on a quest to reveal how Earth’s magnetic shield protects us from the Sun’s relentless solar wind. A major milestone in understanding space weather! #SmileMission #SpaceScience #ESA
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May 20, 2026 at 6:42 PM
🚀 Smile has launched! This joint mission between ESA and the Chinese Academy of Sciences is on a quest to reveal how Earth’s magnetic shield protects us from the Sun’s relentless solar wind. A major milestone in understanding space weather! #SmileMission #SpaceScience #ESA
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Reposted by Jonas Suni
I support Wikipedia, where information is still human-created, fact-checked, and 100% free. Join me! donate.wikimedia.org
Make your donation now - Wikimedia Foundation
Donate to the Wikimedia Foundation, the nonprofit that hosts Wikipedia and other crucial free knowledge projects. Each year, the generosity of the 2% of readers who donate allows us to expand the reac...
donate.wikimedia.org
May 19, 2026 at 3:15 PM
I support Wikipedia, where information is still human-created, fact-checked, and 100% free. Join me! donate.wikimedia.org
Reposted by Jonas Suni
Mark your calendars 🗓️
The Smile mission is due to launch on Tuesday 19 May 2026, at 04:52 BST / 05:52 CEST on a European Vega-C rocket.
That's going to require a lot of coffee ☕🥱
Stay tuned 👉 www.esa.int/Science_Expl...
🔭🧪☀️
The Smile mission is due to launch on Tuesday 19 May 2026, at 04:52 BST / 05:52 CEST on a European Vega-C rocket.
That's going to require a lot of coffee ☕🥱
Stay tuned 👉 www.esa.int/Science_Expl...
🔭🧪☀️
April 23, 2026 at 4:49 PM
Mark your calendars 🗓️
The Smile mission is due to launch on Tuesday 19 May 2026, at 04:52 BST / 05:52 CEST on a European Vega-C rocket.
That's going to require a lot of coffee ☕🥱
Stay tuned 👉 www.esa.int/Science_Expl...
🔭🧪☀️
The Smile mission is due to launch on Tuesday 19 May 2026, at 04:52 BST / 05:52 CEST on a European Vega-C rocket.
That's going to require a lot of coffee ☕🥱
Stay tuned 👉 www.esa.int/Science_Expl...
🔭🧪☀️
Reposted by Jonas Suni
🏳️⚧️ Today we highlight and celebrate Transgender Day of Visibility. Trans people are everywhere and continue to face discrimination for living their truth. We stand with our trans community members and won't stop fighting for their acceptance and inclusion! #TDOV
@agu.org 🏳️⚧️🏳️🌈
@agu.org 🏳️⚧️🏳️🌈
March 31, 2026 at 9:35 AM
Reposted by Jonas Suni
🚢 Inspector Smile has begun a two-week voyage across the Atlantic, heading for Europe’s Spaceport in French Guiana.
In the early hours of 11 February, Smile left ESA’s technical heart by truck for the Port of Amsterdam, where it was loaded onto the cargo ship MN Colibri.
🔭 🧪
In the early hours of 11 February, Smile left ESA’s technical heart by truck for the Port of Amsterdam, where it was loaded onto the cargo ship MN Colibri.
🔭 🧪
February 20, 2026 at 8:59 AM
🚢 Inspector Smile has begun a two-week voyage across the Atlantic, heading for Europe’s Spaceport in French Guiana.
In the early hours of 11 February, Smile left ESA’s technical heart by truck for the Port of Amsterdam, where it was loaded onto the cargo ship MN Colibri.
🔭 🧪
In the early hours of 11 February, Smile left ESA’s technical heart by truck for the Port of Amsterdam, where it was loaded onto the cargo ship MN Colibri.
🔭 🧪
Reposted by Jonas Suni
After the holidays 🎄🎅🎆 its time to submit abstracts to the @egu.eu General Assembly 3-8 May 2026 in Vienna!
👇Our team at the Austrian Space Weather Office convenes 4 sessions - from solar storm ☀️💨 evolution and forecasting, to research to operations (R2O) efforts and machine learning 🤖techniques.
👇Our team at the Austrian Space Weather Office convenes 4 sessions - from solar storm ☀️💨 evolution and forecasting, to research to operations (R2O) efforts and machine learning 🤖techniques.
January 8, 2026 at 2:09 PM
After the holidays 🎄🎅🎆 its time to submit abstracts to the @egu.eu General Assembly 3-8 May 2026 in Vienna!
👇Our team at the Austrian Space Weather Office convenes 4 sessions - from solar storm ☀️💨 evolution and forecasting, to research to operations (R2O) efforts and machine learning 🤖techniques.
👇Our team at the Austrian Space Weather Office convenes 4 sessions - from solar storm ☀️💨 evolution and forecasting, to research to operations (R2O) efforts and machine learning 🤖techniques.
Ends still need to be woven in, but that's the 2025 daily maximum Kp-index blanket done
January 3, 2026 at 11:02 AM
Ends still need to be woven in, but that's the 2025 daily maximum Kp-index blanket done
Well I successfully defended my PhD, and then successfully survived the after-party
November 22, 2025 at 4:22 AM
Well I successfully defended my PhD, and then successfully survived the after-party
Defending my PhD this Friday.
Looking forward to it but also greatly looking forward to it being over 😅
Looking forward to it but also greatly looking forward to it being over 😅
November 19, 2025 at 5:33 PM
Defending my PhD this Friday.
Looking forward to it but also greatly looking forward to it being over 😅
Looking forward to it but also greatly looking forward to it being over 😅
Reposted by Jonas Suni
TLDR; The PSF has made the decision to put our community and our shared diversity, equity, and inclusion values ahead of seeking $1.5M in new revenue. Please read and share. pyfound.blogspot.com/2025/10/NSF-...
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The official home of the Python Programming Language
www.python.org
October 27, 2025 at 2:47 PM
TLDR; The PSF has made the decision to put our community and our shared diversity, equity, and inclusion values ahead of seeking $1.5M in new revenue. Please read and share. pyfound.blogspot.com/2025/10/NSF-...
🧵
🧵
Reposted by Jonas Suni
Look at how round this bird is!!! Bird of the year!!
September 21, 2025 at 2:13 AM
Look at how round this bird is!!! Bird of the year!!
Reposted by Jonas Suni
Bird of the Year voting opens tomorrow, and it is an outrage the takahē is yet to win. I'd like to take this opportunity to urge you to vote for the hide-and-seek legend from Fiordland, the roundest birb, and the one true pick for all you railfans out there
It’s Bird of the Year time, and the official railfan option is the MIGHTY TAKAHĒ, the largest living member of the rail family of birds
So when you vote, don’t forget to include the takahē in your top five: birdoftheyear.org.nz
So when you vote, don’t forget to include the takahē in your top five: birdoftheyear.org.nz
September 14, 2025 at 9:26 AM
Bird of the Year voting opens tomorrow, and it is an outrage the takahē is yet to win. I'd like to take this opportunity to urge you to vote for the hide-and-seek legend from Fiordland, the roundest birb, and the one true pick for all you railfans out there
Reposted by Jonas Suni
![4-panel Comic. (1) STUDENT: If the wavefunction only collapses when I observe it, does that mean my consciousness affects the universe? (2) [Bad:] PROFESSOR: Yes, quantum entanglement proves that we all have souls. (3) [Good:] PROFESSOR: No, consciousness plays no role here. It’s just physical measurement. (4) [Chaotic:] PROFESSOR: No. The wavefunction collapses when *I* look at it because I’m a full professor. It won’t collapse for an undergraduate.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreic2mhmdvsftki6qe275hycolgt22msekbwzdyqoujt56qzpcbm3hm)
August 28, 2025 at 9:27 PM
Reposted by Jonas Suni
Come join us @utu.fi for a Postdoc to investigate solar energetic particles using AI! ☀️ #heliophysics #spaceweather ats.talentadore.com/apply/avaruu...
Postdoctoral Researcher of Data Analytics in Space Physics
The Department of Computing and the Department of Physics and Astronomy at the University of Turku are looking for a postdoctoral researcher of data analytics in space physics. The selected person wil...
ats.talentadore.com
August 28, 2025 at 8:45 AM
Come join us @utu.fi for a Postdoc to investigate solar energetic particles using AI! ☀️ #heliophysics #spaceweather ats.talentadore.com/apply/avaruu...
My PhD thesis has now been submitted for pre-examination 🎉
Which means that it's time for me to take some time off 🌴
Which means that it's time for me to take some time off 🌴
August 12, 2025 at 1:38 PM
My PhD thesis has now been submitted for pre-examination 🎉
Which means that it's time for me to take some time off 🌴
Which means that it's time for me to take some time off 🌴
Reposted by Jonas Suni
Just heard from @tmelnik.bsky.social that DSCOVR is offline. Recovery attempts have not been successful. It's going to be a significant, if not permanent, outage.
forecast.weather.gov/product.php?...
#heliophysics
forecast.weather.gov/product.php?...
#heliophysics
National Weather Service
forecast.weather.gov
July 22, 2025 at 7:34 PM
Just heard from @tmelnik.bsky.social that DSCOVR is offline. Recovery attempts have not been successful. It's going to be a significant, if not permanent, outage.
forecast.weather.gov/product.php?...
#heliophysics
forecast.weather.gov/product.php?...
#heliophysics
Reposted by Jonas Suni
TIL (on mastodon) that the US National Park Service has crochet patterns!
www.nps.gov/articles/000...
www.nps.gov/articles/000...
Halibut Crochet Pattern (U.S. National Park Service)
www.nps.gov
July 11, 2025 at 8:22 PM
TIL (on mastodon) that the US National Park Service has crochet patterns!
www.nps.gov/articles/000...
www.nps.gov/articles/000...
Reposted by Jonas Suni
AGU is deeply disappointed in SCOTUS decision to overrule the order blocking the dismantling of fed agencies until we could make our case about the President’s unlawful actions.
The harm this will cause is shocking. However, we will continue to fight for the rule of law.
The harm this will cause is shocking. However, we will continue to fight for the rule of law.
July 9, 2025 at 11:01 AM
AGU is deeply disappointed in SCOTUS decision to overrule the order blocking the dismantling of fed agencies until we could make our case about the President’s unlawful actions.
The harm this will cause is shocking. However, we will continue to fight for the rule of law.
The harm this will cause is shocking. However, we will continue to fight for the rule of law.