Jonas Kemmer
@jonaskemmer.bsky.social
Er/he/him. Astronomy and Climate Action related postings.
Reposted by Jonas Kemmer
🔭 Red Sprites and Circular Elves Lightning over Italy
Image Credit & Copyright: Valter Binotto
apod.nasa.gov/apod/ap25122...
Image Credit & Copyright: Valter Binotto
apod.nasa.gov/apod/ap25122...
December 23, 2025 at 8:00 AM
🔭 Red Sprites and Circular Elves Lightning over Italy
Image Credit & Copyright: Valter Binotto
apod.nasa.gov/apod/ap25122...
Image Credit & Copyright: Valter Binotto
apod.nasa.gov/apod/ap25122...
Reposted by Jonas Kemmer
Closing out my year with a journal editor shocker 🧵
Checking new manuscripts today I reviewed a paper attributing 2 papers to me I did not write. A daft thing for an author to do of course. But intrigued I web searched up one of the titles and that's when it got real weird...
Checking new manuscripts today I reviewed a paper attributing 2 papers to me I did not write. A daft thing for an author to do of course. But intrigued I web searched up one of the titles and that's when it got real weird...
December 19, 2025 at 5:20 PM
Closing out my year with a journal editor shocker 🧵
Checking new manuscripts today I reviewed a paper attributing 2 papers to me I did not write. A daft thing for an author to do of course. But intrigued I web searched up one of the titles and that's when it got real weird...
Checking new manuscripts today I reviewed a paper attributing 2 papers to me I did not write. A daft thing for an author to do of course. But intrigued I web searched up one of the titles and that's when it got real weird...
Reposted by Jonas Kemmer
There are many claims that AI is a “planet killing” source of greenhouse gases.
But is it?
This paper might be the most detailed estimate of the emissions associated with AI.
It suggests that AI could emit as much as 30-80 *million* tons of CO2 per year.
www.cell.com/patterns/ful...
But is it?
This paper might be the most detailed estimate of the emissions associated with AI.
It suggests that AI could emit as much as 30-80 *million* tons of CO2 per year.
www.cell.com/patterns/ful...
The carbon and water footprints of data centers and what this could mean for artificial intelligence
Company-wide metrics from the environmental disclosure of data center operators suggest
that AI systems may have a carbon footprint equivalent to that of New York City in
2025, while their water footp...
www.cell.com
December 19, 2025 at 5:28 AM
There are many claims that AI is a “planet killing” source of greenhouse gases.
But is it?
This paper might be the most detailed estimate of the emissions associated with AI.
It suggests that AI could emit as much as 30-80 *million* tons of CO2 per year.
www.cell.com/patterns/ful...
But is it?
This paper might be the most detailed estimate of the emissions associated with AI.
It suggests that AI could emit as much as 30-80 *million* tons of CO2 per year.
www.cell.com/patterns/ful...
Reposted by Jonas Kemmer
🙌 The Image Data Community Days are back! Join us for 5 online days packed with lectures, hands-on workshops & networking sessions from 🗓️ April 13-17.
✅ Mark your calendars
✅ Fill in our “Collection of Interest” form
Learn more 🔽
www.eurobioimaging.eu/our-events/i...
✅ Mark your calendars
✅ Fill in our “Collection of Interest” form
Learn more 🔽
www.eurobioimaging.eu/our-events/i...
December 18, 2025 at 4:30 PM
🙌 The Image Data Community Days are back! Join us for 5 online days packed with lectures, hands-on workshops & networking sessions from 🗓️ April 13-17.
✅ Mark your calendars
✅ Fill in our “Collection of Interest” form
Learn more 🔽
www.eurobioimaging.eu/our-events/i...
✅ Mark your calendars
✅ Fill in our “Collection of Interest” form
Learn more 🔽
www.eurobioimaging.eu/our-events/i...
Reposted by Jonas Kemmer
Are you a bachelor or master student anywhere in the world, and would like to come to us to work full-time on a supervised research project? Applications for the 2026 MPIA Summer Internship are open now!
Summer internships
www.mpia.de
December 17, 2025 at 9:13 PM
Are you a bachelor or master student anywhere in the world, and would like to come to us to work full-time on a supervised research project? Applications for the 2026 MPIA Summer Internship are open now!
Reposted by Jonas Kemmer
We have two new indicators in our assessment tool for residential heating emissions: building construction year & energy carrier🏘️
Let´s test the new features by looking at Kalbach-Riedberg (#Frankfurt). Some areas seems to have no emissions: how is this possible?
🔎 heigit.org/new-indicato...
Let´s test the new features by looking at Kalbach-Riedberg (#Frankfurt). Some areas seems to have no emissions: how is this possible?
🔎 heigit.org/new-indicato...
December 17, 2025 at 9:15 AM
We have two new indicators in our assessment tool for residential heating emissions: building construction year & energy carrier🏘️
Let´s test the new features by looking at Kalbach-Riedberg (#Frankfurt). Some areas seems to have no emissions: how is this possible?
🔎 heigit.org/new-indicato...
Let´s test the new features by looking at Kalbach-Riedberg (#Frankfurt). Some areas seems to have no emissions: how is this possible?
🔎 heigit.org/new-indicato...
Reposted by Jonas Kemmer
We have released a new hiBike update in the Climate Action Navigator! 🚲
Now with Greenness, Detour Factors, and Extended Summaries to help analyze bikeability with even more precision.
Read more: heigit.org?p=41475
Try hiBike: climate-action.heigit.org/webapp/dashb...
@radlobby.at
Now with Greenness, Detour Factors, and Extended Summaries to help analyze bikeability with even more precision.
Read more: heigit.org?p=41475
Try hiBike: climate-action.heigit.org/webapp/dashb...
@radlobby.at
December 10, 2025 at 9:01 AM
We have released a new hiBike update in the Climate Action Navigator! 🚲
Now with Greenness, Detour Factors, and Extended Summaries to help analyze bikeability with even more precision.
Read more: heigit.org?p=41475
Try hiBike: climate-action.heigit.org/webapp/dashb...
@radlobby.at
Now with Greenness, Detour Factors, and Extended Summaries to help analyze bikeability with even more precision.
Read more: heigit.org?p=41475
Try hiBike: climate-action.heigit.org/webapp/dashb...
@radlobby.at
Reposted by Jonas Kemmer
83.000 Tote mehr - Starben viel mehr Menschen in 🇩🇪 an Corona, als bisher geschätzt?
Nachdem bereits diverse Studien deutlich höhere COVID19-Todeszahlen als in der offiziellen RKI-Statistik aufgezeigt haben, weisen nun auch Krankenhaus-Abrechnungen auf eine …
Nachdem bereits diverse Studien deutlich höhere COVID19-Todeszahlen als in der offiziellen RKI-Statistik aufgezeigt haben, weisen nun auch Krankenhaus-Abrechnungen auf eine …
December 14, 2025 at 5:26 PM
83.000 Tote mehr - Starben viel mehr Menschen in 🇩🇪 an Corona, als bisher geschätzt?
Nachdem bereits diverse Studien deutlich höhere COVID19-Todeszahlen als in der offiziellen RKI-Statistik aufgezeigt haben, weisen nun auch Krankenhaus-Abrechnungen auf eine …
Nachdem bereits diverse Studien deutlich höhere COVID19-Todeszahlen als in der offiziellen RKI-Statistik aufgezeigt haben, weisen nun auch Krankenhaus-Abrechnungen auf eine …
Reposted by Jonas Kemmer
Ich hatte ja schon erwähnt, dass wir mit dem Deutschen Museum zusammenarbeiten & wir dort unsere Studien durchführen. Wir haben aber auch noch weitere gemeinsame Projekte:
1/6
1/6
December 14, 2025 at 2:21 PM
Ich hatte ja schon erwähnt, dass wir mit dem Deutschen Museum zusammenarbeiten & wir dort unsere Studien durchführen. Wir haben aber auch noch weitere gemeinsame Projekte:
1/6
1/6
Reposted by Jonas Kemmer
Vor fast genau zehn Jahren begann die historische Klimakonferenz von Paris. Ein guter Anlass, mal zu schauen, was sich seitdem in Deutschland verändert hat. (1/10)
November 27, 2025 at 11:19 AM
Vor fast genau zehn Jahren begann die historische Klimakonferenz von Paris. Ein guter Anlass, mal zu schauen, was sich seitdem in Deutschland verändert hat. (1/10)
Reposted by Jonas Kemmer
The incredible ‘Orkney Hood’ from Scotland! 🏴
So well preserved it looks like it was woven yesterday rather than some 1,500 years ago!
It’s thought the hood was made for a child. Found in 1867 in a peat bog in St Andrews Parish, Orkney.
National Museum of Scotland
📷 by me
#Archaeology
So well preserved it looks like it was woven yesterday rather than some 1,500 years ago!
It’s thought the hood was made for a child. Found in 1867 in a peat bog in St Andrews Parish, Orkney.
National Museum of Scotland
📷 by me
#Archaeology
December 2, 2025 at 11:19 AM
The incredible ‘Orkney Hood’ from Scotland! 🏴
So well preserved it looks like it was woven yesterday rather than some 1,500 years ago!
It’s thought the hood was made for a child. Found in 1867 in a peat bog in St Andrews Parish, Orkney.
National Museum of Scotland
📷 by me
#Archaeology
So well preserved it looks like it was woven yesterday rather than some 1,500 years ago!
It’s thought the hood was made for a child. Found in 1867 in a peat bog in St Andrews Parish, Orkney.
National Museum of Scotland
📷 by me
#Archaeology
Reposted by Jonas Kemmer
Hi! Ich bin @hagenblix.bsky.social, ich bin Kognitions- und Sprachwissenschaftler. In den letzten Jahren hat mich vor allem das Verhältnis von Kognition und KI interessiert. Es wird ja gerne behauptet, dass KI ähnliche Dinge tue wie wir, oder sogar direkt wie unser Gehirn. 1/4
[Admin] Sprachwissenschaft und KI, im Kontext der Arbeitsgeschichte! Begrüßt unseren neuen Kurator @hagenblix.bsky.social!
realscientistsde.blogspot.com/2025/11/spra...
realscientistsde.blogspot.com/2025/11/spra...
Sprachwissenschaft und KI, im Kontext der Arbeitsgeschichte! Hagen Blix ist jetzt bei Real Scientists DE!
Diese Woche freuen wir uns auf unseren Kurator Hagen Blix ( @hagenblix.bsky.social )! Hagen ist Kognitionswissenschaftler und Linguist in N...
realscientistsde.blogspot.com
December 1, 2025 at 5:54 PM
Hi! Ich bin @hagenblix.bsky.social, ich bin Kognitions- und Sprachwissenschaftler. In den letzten Jahren hat mich vor allem das Verhältnis von Kognition und KI interessiert. Es wird ja gerne behauptet, dass KI ähnliche Dinge tue wie wir, oder sogar direkt wie unser Gehirn. 1/4
Reposted by Jonas Kemmer
Knapp 20 Milliarden Lämpchen leuchten zur Adventszeit 2025 in Deutschland. 🎄
Was das für Stromverbrauch und CO2-Emissionen bedeutet? Hier die Key Facts unserer diesjährigen Weihnachtsumfrage.
Was das für Stromverbrauch und CO2-Emissionen bedeutet? Hier die Key Facts unserer diesjährigen Weihnachtsumfrage.
November 27, 2025 at 1:00 PM
Knapp 20 Milliarden Lämpchen leuchten zur Adventszeit 2025 in Deutschland. 🎄
Was das für Stromverbrauch und CO2-Emissionen bedeutet? Hier die Key Facts unserer diesjährigen Weihnachtsumfrage.
Was das für Stromverbrauch und CO2-Emissionen bedeutet? Hier die Key Facts unserer diesjährigen Weihnachtsumfrage.
Reposted by Jonas Kemmer
Man muss sich vor Augen führen: die Konferenzleitung hat seit Dienstag Druck gemacht, schon Mitte der Woche gab es erste Nachtschichten - d.h. alle sind jetzt auch echt gar.
November 22, 2025 at 7:36 AM
Man muss sich vor Augen führen: die Konferenzleitung hat seit Dienstag Druck gemacht, schon Mitte der Woche gab es erste Nachtschichten - d.h. alle sind jetzt auch echt gar.
Reposted by Jonas Kemmer
Was sieht man hier? 👉 #Moorschwund
Moorschwund = entwässerte #Moore verlieren an Höhe, die Bodenoberfläche sinkt ab.
Im Ø 1-2cm, pro Jahr!
In trockenen Mooren, die als Acker 🚜 oder Wiese 🐮 genutzt werden, ist das aber praktisch kaum zu sehen - anders im Erlenbruchwald.
/1/
Moorschwund = entwässerte #Moore verlieren an Höhe, die Bodenoberfläche sinkt ab.
Im Ø 1-2cm, pro Jahr!
In trockenen Mooren, die als Acker 🚜 oder Wiese 🐮 genutzt werden, ist das aber praktisch kaum zu sehen - anders im Erlenbruchwald.
/1/
November 20, 2025 at 3:47 PM
Was sieht man hier? 👉 #Moorschwund
Moorschwund = entwässerte #Moore verlieren an Höhe, die Bodenoberfläche sinkt ab.
Im Ø 1-2cm, pro Jahr!
In trockenen Mooren, die als Acker 🚜 oder Wiese 🐮 genutzt werden, ist das aber praktisch kaum zu sehen - anders im Erlenbruchwald.
/1/
Moorschwund = entwässerte #Moore verlieren an Höhe, die Bodenoberfläche sinkt ab.
Im Ø 1-2cm, pro Jahr!
In trockenen Mooren, die als Acker 🚜 oder Wiese 🐮 genutzt werden, ist das aber praktisch kaum zu sehen - anders im Erlenbruchwald.
/1/
Reposted by Jonas Kemmer
Das ist übrigens Eugenik.
Wenn du einmal beginnst zu selektieren, wem du hilfst und wem nicht, dann gehst du einen Weg, der nicht aufzuhalten ist.
Streeck ist Mediziner und weiß das natürlich. Das macht es so perfide. Vor allem, weil er zwei rhetorische Tricks verwendet:
Wenn du einmal beginnst zu selektieren, wem du hilfst und wem nicht, dann gehst du einen Weg, der nicht aufzuhalten ist.
Streeck ist Mediziner und weiß das natürlich. Das macht es so perfide. Vor allem, weil er zwei rhetorische Tricks verwendet:
Hendrik Streeck fragt: Sind teure Medikamente für Senioren wirklich nötig?
Hendrik Streeck fragt: Sind teure Medikamente für Senioren wirklich nötig?
Der CDU-Gesundheitspolitiker Streeck fragt: Sollen 100-Jährige wirklich noch teure Medikamente bekommen?
www.t-online.de
November 13, 2025 at 7:14 AM
Das ist übrigens Eugenik.
Wenn du einmal beginnst zu selektieren, wem du hilfst und wem nicht, dann gehst du einen Weg, der nicht aufzuhalten ist.
Streeck ist Mediziner und weiß das natürlich. Das macht es so perfide. Vor allem, weil er zwei rhetorische Tricks verwendet:
Wenn du einmal beginnst zu selektieren, wem du hilfst und wem nicht, dann gehst du einen Weg, der nicht aufzuhalten ist.
Streeck ist Mediziner und weiß das natürlich. Das macht es so perfide. Vor allem, weil er zwei rhetorische Tricks verwendet:
Reposted by Jonas Kemmer
Doch noch eine Frage vor dem Mittagessen: Wer von euch erkennt hier was?
November 10, 2025 at 10:25 AM
Doch noch eine Frage vor dem Mittagessen: Wer von euch erkennt hier was?
Reposted by Jonas Kemmer
9-10 November 1938 | The November Pogrom – a pogrom against the Jews throughout Nazi Germany. Hundreds were killed (or died by suicide), 30,000 men arrested and incarcerated in concentration camps, over 1,000 synagogues burnt, over 7,000 Jewish businesses destroyed or damaged.
November 9, 2025 at 11:00 AM
9-10 November 1938 | The November Pogrom – a pogrom against the Jews throughout Nazi Germany. Hundreds were killed (or died by suicide), 30,000 men arrested and incarcerated in concentration camps, over 1,000 synagogues burnt, over 7,000 Jewish businesses destroyed or damaged.
Reposted by Jonas Kemmer
November 3, 2025 at 8:00 AM
Reposted by Jonas Kemmer
We are releasing seven new science publications today, based on our Q1 data release earlier this year. All revolve around galaxies, from dust to interactions to active centers.These are accompanied by two new image collages drawn from the same release.
1/
🔭 #astronomy #space #ESA
1/
🔭 #astronomy #space #ESA
November 5, 2025 at 9:15 AM
We are releasing seven new science publications today, based on our Q1 data release earlier this year. All revolve around galaxies, from dust to interactions to active centers.These are accompanied by two new image collages drawn from the same release.
1/
🔭 #astronomy #space #ESA
1/
🔭 #astronomy #space #ESA
Reposted by Jonas Kemmer
🎉 Congratulations on this beautiful image that reveals the secret surface of Alyssum alyssoides seeds! 🌱🔬
Winning photograph of the European microscopy competition @eurobioimaging.bsky.social. The author is our colleague Tomáš Figura from the Dept. of Mycorrhizal Symbioses. Resembling a perfect summer holiday scene with a blue sea full of starfish, this is actually the seed surface of Alyssum alyssoides
November 4, 2025 at 7:39 AM
🎉 Congratulations on this beautiful image that reveals the secret surface of Alyssum alyssoides seeds! 🌱🔬
Reposted by Jonas Kemmer
Open Sesame!
The ELT doors have moved for the first time. This was no small feat, as each door will weigh 650 tonnes once completed.
The ELT dome & its doors will guard the telescope from the harsh conditions of the Atacama Desert.
https://www.eso.org/public/videos/potw2544a/
🔭 🧪
📹 ESO/ACe
The ELT doors have moved for the first time. This was no small feat, as each door will weigh 650 tonnes once completed.
The ELT dome & its doors will guard the telescope from the harsh conditions of the Atacama Desert.
https://www.eso.org/public/videos/potw2544a/
🔭 🧪
📹 ESO/ACe
November 3, 2025 at 8:02 AM
Open Sesame!
The ELT doors have moved for the first time. This was no small feat, as each door will weigh 650 tonnes once completed.
The ELT dome & its doors will guard the telescope from the harsh conditions of the Atacama Desert.
https://www.eso.org/public/videos/potw2544a/
🔭 🧪
📹 ESO/ACe
The ELT doors have moved for the first time. This was no small feat, as each door will weigh 650 tonnes once completed.
The ELT dome & its doors will guard the telescope from the harsh conditions of the Atacama Desert.
https://www.eso.org/public/videos/potw2544a/
🔭 🧪
📹 ESO/ACe
Reposted by Jonas Kemmer
We are pleased to announce our discovery of #GW241011 and #GW241110
Both come from binary black holes where one black hole is much larger than the other. The larger black holes have large spin. Could these black holes have formed in a previous merger?
ligo.org/science-summ...
#O4IsHere 🔭🧪⚛️☄️
Both come from binary black holes where one black hole is much larger than the other. The larger black holes have large spin. Could these black holes have formed in a previous merger?
ligo.org/science-summ...
#O4IsHere 🔭🧪⚛️☄️
October 29, 2025 at 1:58 PM
We are pleased to announce our discovery of #GW241011 and #GW241110
Both come from binary black holes where one black hole is much larger than the other. The larger black holes have large spin. Could these black holes have formed in a previous merger?
ligo.org/science-summ...
#O4IsHere 🔭🧪⚛️☄️
Both come from binary black holes where one black hole is much larger than the other. The larger black holes have large spin. Could these black holes have formed in a previous merger?
ligo.org/science-summ...
#O4IsHere 🔭🧪⚛️☄️
Reposted by Jonas Kemmer
New article dropping today on a very important and timely topic — the potential planetary system of Zeta² Reticuli, and what it might mean for planetary security #exoplanets 🔭
In space there will be no need to scream - Limits to the presence of giant planets in the $ζ^2$ Ret system
The search for life beyond our Solar system has been a long and difficult endeavour. The majority of current efforts are focused on the potential detection of biosignatures. However, their detection a...
arxiv.org
October 31, 2025 at 10:32 AM
New article dropping today on a very important and timely topic — the potential planetary system of Zeta² Reticuli, and what it might mean for planetary security #exoplanets 🔭
Reposted by Jonas Kemmer
Chatbots — LLMs — do not know facts and are not designed to be able to accurately answer factual questions. They are designed to find and mimic patterns of words, probabilistically. When they’re “right” it’s because correct things are often written down, so those patterns are frequent. That’s all.
June 19, 2025 at 11:21 AM
Chatbots — LLMs — do not know facts and are not designed to be able to accurately answer factual questions. They are designed to find and mimic patterns of words, probabilistically. When they’re “right” it’s because correct things are often written down, so those patterns are frequent. That’s all.