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Jonas Suni

@jonassuni.bsky.social
42 followers 36 following 26 posts

Space Physics | Postdoctoral Researcher at the University of Helsinki | Magnetosheath jets etc. | Enjoys photography, cycling, and cooking 🏳️‍🌈

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Reposted by Jonas Suni
Randall Munroe @xkcd.com · 02/10/2026
Ground Effect xkcd.com/3305/
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.
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Herbert Gunell @herbertgunell.se · 04/09/2026
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=...
Eva krämer prepares her thesis for nailing by driving the nail into a corner of the book.Eva Krämer puts her thesis on the wall, using hammer and nail.
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Rose Atkinson @solarwindstream.bsky.social · 13/08/2026
Exiting totality in Tarragona. It was majestic <3 #eclipse
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Dr Cara Waters @caralwaters.bsky.social · 03/08/2026
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
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...
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Nature Portfolio @natureportfolio.nature.com · 15/06/2026
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 🔭🧪
This is Extended Data figure 2, which shows a schematic representation of efficient particle acceleration within a foreshock transient.
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Savvas Raptis @savvasraptis.bsky.social · 03/06/2026
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...
nature.com
Relativistic electron acceleration at the bow shock of Jupiter and beyond - Nature
NASA’s&nbsp;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.
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NASA | ESA Space Updates @nasaupdates.bsky.social · 20/05/2026
🚀 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 1/4
Smile's X-ray camera sees Earth reacting to coronal mass ejection

Credit: ESA
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Savvas Raptis @savvasraptis.bsky.social · 19/05/2026
I support Wikipedia, where information is still human-created, fact-checked, and 100% free. Join me! donate.wikimedia.org
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...
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ESA Space Science @science.esa.int · 23/04/2026
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... 🔭🧪☀️
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AGQ- Queer Affinity Group of the AGU @queeragu.bsky.social · 31/03/2026
🏳️‍⚧️ 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 🏳️‍⚧️🏳️‍🌈
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ESA Space Science @science.esa.int · 20/02/2026
🚢 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. 🔭 🧪
Smile arrives at the Port of Amsterdam by truck. A speech bubble says 'Port of Amsterdam, we have arrived!'. The Smile robot is seeing behind the container waving.Smile is loaded into a ship at the Port of Amsterdam. A text bubble says 'A little later...'. A speech bubble says 'Lift-off rehearsal, nailed it!'. The Smile robot is seeing behind the container waving.View of Smile in the Maritime Nantaise’s Colibri ship. A speech bubble says 'All smiles on board!'.The MN Colibri ship in the Port of Amsterdam, ready for transport. A speech bubble says 'Inspector on board. Set sail. Destination: French Guiana!'. Another text bubble says 'HOOONK!'
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Austrian Space Weather Office @aswogeosphere.bsky.social · 08/01/2026
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.
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Jonas Suni @jonassuni.bsky.social · 03/01/2026
Ends still need to be woven in, but that's the 2025 daily maximum Kp-index blanket done
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Jonas Suni @jonassuni.bsky.social · 22/11/2025
Well I successfully defended my PhD, and then successfully survived the after-party
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Jonas Suni @jonassuni.bsky.social · 19/11/2025
Defending my PhD this Friday. Looking forward to it but also greatly looking forward to it being over 😅
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Python Software Foundation @python.org · 27/10/2025
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-... 🧵
python.org
The official home of the Python Programming Language
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Dr. Adeene Denton @spacewhalerider.com · 21/09/2025
Look at how round this bird is!!! Bird of the year!!
Male takahe walking on grass. It is SO ROUNDAn EVEN ROUNDER Takahē
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André Brett @drdrehistorian.bsky.social · 14/09/2025
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
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Randall Munroe @xkcd.com · 28/08/2025
Wavefunction Collapse xkcd.com/3134/
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.
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Jan Gieseler @jangieseler.bsky.social · 28/08/2025
Come join us @utu.fi for a Postdoc to investigate solar energetic particles using AI! ☀️ #heliophysics #spaceweather ats.talentadore.com/apply/avaruu...
ats.talentadore.com
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...
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Jonas Suni @jonassuni.bsky.social · 12/08/2025
My PhD thesis has now been submitted for pre-examination 🎉 Which means that it's time for me to take some time off 🌴
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Mathew Owens @mathewjowens.bsky.social · 22/07/2025
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
National Weather Service
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Yvonne Lam @yvonnezlam.bsky.social · 11/07/2025
TIL (on mastodon) that the US National Park Service has crochet patterns! www.nps.gov/articles/000...
nps.gov
Halibut Crochet Pattern (U.S. National Park Service)
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AGU (American Geophysical Union) @agu.org · 09/07/2025
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.
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🏳️‍🌈 Tusenfem ☄️🪐 @tusenfem.bsky.social · 09/07/2025
Ein sehr schoener Beitrag in BILD DER WISSENSCHAFT ueber die Entdeckung von Litium bei Merkur. www.wissenschaft.de/.../lithium-... Siehe auch: Daniel Schmid (@iwf-oeaw.bsky.social @oeaw.bsky.social) et al., Nature Communications, doi: 10.1038/s41467-025-61516-4,
wissenschaft.de
Lithium in Merkurs Exosphäre nachgewiesen
Der innerste Planet Merkur hat zwar keine echte Atmosphäre, aber eine extrem dünne Gashülle in Form einer Exosphäre. In dieser haben Planetenforscher nun mi
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Jessica Lu @jluastro.bsky.social · 20/06/2025
NASA Goddard is pushing through a 48% staff reduction!!! This could impact the upcoming Roman Space Telescope and many other future Astro missions. News coverage seems not sensational enough. Are we really going to let NASA (as we know it) die quietly? www.space.com/space-explor...
space.com
NASA begins push to slash workforce with more staff buyouts, early retirements as budget cuts loom
NASA employees have until July 25 to decide if they'll stay or go.
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Vincent Ledvina @vincentledvina.bsky.social · 19/06/2025
Check out this recent article I was a co-author on: "Citizen Science in Space and Atmospheric Sciences: Opportunities and Challenges" link.springer.com/article/10.1... Here's a thread of the main points outlined in our paper! #heliophysics
link.springer.com
Citizen Science in Space and Atmospheric Sciences: Opportunities and Challenges - Surveys in Geophysics
Citizen science (also referred to as participatory science or community science), in which members of the general public contribute to scientific research, is not a new concept, as early examples of s...
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Jonas Suni @jonassuni.bsky.social · 18/06/2025
Today I gave a seminar on the topic of my doctoral dissertation, and with that, I have now completed all of my doctoral studies. ... Aside from the thesis. Still gotta finish writing that. And then defend it.
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European Space Agency @esa.int · 16/06/2025
Breaking space news: We have made our own solar eclipse in space! 🌘 Today, we release the first images from our Proba-3 mission, which flies two spacecraft in precise formation to create artificial solar eclipses in orbit. Learn more ➡️ www.esa.int/Enabling_Sup...
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Jonas Suni @jonassuni.bsky.social · 10/06/2025
My latest paper, regarding magnetosheath jet formation associated with a solar wind rotational discontinuity, is now published! agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com
Magnetosheath Jets Associated With a Solar Wind Rotational Discontinuity in a Hybrid‐Vlasov Simulation
We conduct a 2D hybrid-Vlasov simulation of the interaction between Earth's bow shock and a solar wind rotational discontinuity Magnetosheath jets that form during the shock-discontinuity interac...
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Paul Byrne @theplanetaryguy.com · 31/05/2025
Inspired by @jtuttlekeane.bsky.social and @ohdearz.bsky.social, here's what the White House proposed budget cuts to NASA would do to the entirety of the agency's Science Mission Directorate. Bloodbath is right.
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Florian Koller @flokoller.bsky.social · 03/06/2025
I'm excited to share that I was awarded the the Marie Skłodowska-Curie Postdoctoral Fellowship! Starting this October, I will work on plasma shocks in the heliosphere at QMUL. Looking forward to new endeavors!
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AGU (American Geophysical Union) @agu.org · 08/05/2025
THIS FRIDAY: Can we halt the illegal mass firings of our federal scientific workforce? We will argue in District Court this week for a temporary restraining order on the execution of Trump’s Executive Order.
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Dr Theodosios Chatzistergos @damagedonegr.bsky.social · 06/05/2025
I want to draw your attention to our Community-Driven session titled 'Refining the Sunspot Number Series: Challenges and Benefits for the Space Climate Community' at this year's hybrid European Space Weather Week meeting.☀️ The abstract deadline is 15th of May. events.spacepole.be/event/222/ab...
events.spacepole.be
ESWW2025 - Call for Abstracts and Live Space Weather Forecast
To submit, you create an Indico account on your first visit. For this, click on 'create one here' below the log-in boxes.If you have an Indico account, you can login with this one regardless if this a...
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Christian Möstl @chrisoutofspace.bsky.social · 06/05/2025
The University of Helsinki has put this introductory course on "Sustainable Space" online, covering topics such as #spacedebris, #spaceweather, #solarwind, magnetosphere, and ionosphere, atmosphere, as well as basics of satellites, orbits, and launchers. courses.mooc.fi/org/uh-physi...
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Christian Möstl @chrisoutofspace.bsky.social · 01/05/2025
At #EGU2025 I talked today about our catalogs for #solastorm observations and how they are used for enhancing #spaceweather forecasting. Plus gave a quick outlook of how data of the new PUNCH @punch-mission.bsky.social mission can be used in connection with many other spacecraft in the heliosphere!
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Savvas Raptis @savvasraptis.bsky.social · 01/05/2025
Our collisionless shocks session at #EGU25 drew a great crowd, sparked insightful discussions and set the stage for new #heliophysics collaborations. Thanks to everyone that attended!
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Jonas Suni @jonassuni.bsky.social · 28/04/2025
My #EGU25 unfortunately started with a headache that made me miss the first day :( But I will try my best to give a good talk about rotational discontinuities and magnetosheath jets tomorrow at 9:10 in room 0.94/95.
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Austrian Space Weather Office @aswogeosphere.bsky.social · 28/04/2025
Our team at the Austrian Space Weather Office has 5 presentations as lead-author at this weeks #EGU25 in Vienna, and we (co-)convene 3 sessions! We show our work on forecasting #solarstorms and observations with multiple spacecraft, using #AI methods for their detection and #solarwind modeling! ☀️💥
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Max Planck Institute for Solar System Research @mpsgoettingen.bsky.social · 24/04/2025
Technical First Light! The #InouyeSolarTelescope ’s Visible Tunable Filtergraph, developed and built at the Institute for Solar Physics (#KIS), looks at the #Sun for the first time. #MPSGoettingen is a partner of the project. Read more here: www.mps.mpg.de/the-heart-of... #NSO #NSF
Sunspot as seen by VTF
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Imperial Science @imperialsci.bsky.social · 23/04/2025
☀️ You can’t stop the Sun, but you can prepare for its storms 📅 21 May, 17.30-18.30 Join Prof Jonathan Eastwood (@imperialphysics.bsky.social) for his lecture on the science of space weather, why it matters, and how we can get ready for the next big solar flare www.imperial.ac.uk/events/19087...
imperial.ac.uk
The relentless sun: how do we live with severe space weather?
Please join us for the Inaugural Lecture of Professor Jonathan Eastwood.
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Herbert Gunell @herbertgunell.se · 09/04/2025
Jets were recently found at Mars, and we made a statistical study, using data from the Maven spacecraft, to find out more about them. You may read the paper here: doi.org/10.1051/0004...
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Chris Scott @profchrisscott.bsky.social · 31/03/2025
It is 100 years since Appleton proved the existence of the ionosphere. To celebrate, a colleague & I wrote an article. You can read it here; academic.oup.com/astrogeo/art...
academic.oup.com
Appleton's Ionosphere
A century after Appleton's pioneering experiment, his measurement techniques still underpin our monitoring of Earth's ionosphere. Christopher Scott and Mat
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Jonas Suni @jonassuni.bsky.social · 28/03/2025
Yesterday I submitted the last paper that will be included in my PhD thesis. Keeping my fingers crossed for favourable reviews.
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Katie Corker @katiecorker.bsky.social · 20/03/2025
A correction -- If you publish in an OA journal with CC-BY-NC, you often cede your rights to the publisher. That's right - paying an APC does *not* mean you own your work. The publisher can resell your work to whomever they choose.
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Jonas Suni @jonassuni.bsky.social · 13/03/2025
New review article about ULF waves from the foreshock to the ground by Lucile Turc et al! rdcu.be/edsKw
rdcu.be
From Foreshock 30-Second Waves to Magnetospheric Pc3 Waves
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Erin Macdonald @drerinmac.bsky.social · 12/03/2025
Relevant for Los Angeles folk
People who are at risk of exposure to the recent measles case include:
• Travelers who were at the Tom
Bradley International Terminal at LAX the evening of March 5 between 7 and 10:40 p.m.
• People who visited Cloud 9 Nail Salon in North Hollywood on March 7 between 11 a.m. and 5 p.m. The salon is at 5142 N. Lankershim Blvd.
• Customers of Superior Grocers at
10683 Valley Blvd. in El Monte who visited on March 10 between 8:15 and 10:30 a.m.
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