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Christopher Kyba 🇨🇦🇩🇪🇪🇺

@skyglowberlin.fediscience.org.ap.brid.gy
69 followers 12 following 309 posts

Heisenberg Professor for Nighttime Light Remote Sensing at the Institute of Geography of the Ruhr University Bochum #RemoteSensing #CitizenScience #LightPollution 🌉 bridged from ⁂ fediscience.org/@skyglowberlin, follow @ap.brid.gy to interact

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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 12m
I'm grading student papers, and when I started one tonight I was like "hmmm, that sounds familiar". Weirdly, the paper I graded yesterday has nearly the same start, even though the topics are different. None of the other students in the class used this start […] [Original post on fediscience.org]
1 Einleitung
Der Klimawandel zahlt zu den gréBten globalen Herausforderungen des 21. Jahr-
1. Einleitung
Der Klimawandel zählt zu den zentralen globalen Herausforderungen des 21.
Jahrhunderts und ...
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Reposted by Christopher Kyba 🇨🇦🇩🇪🇪🇺
Muki Haklay @mhaklay.mastodon.social.ap.brid.gy · 7h
@skyglowberlin
mstdn.social
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 6h
This is already all over the place in Germany. I've seen a demo, it takes only a few minutes to set up, no electrical work required. You do need an outdoor socket, though.
flipboard.com
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Reposted by Christopher Kyba 🇨🇦🇩🇪🇪🇺
Sara Pritchard @sarabpritchard.bsky.social · 23h
Attending #4S #4SToronto #4S2026 ? I am giving away* 2 print copies of my new book, #TransformingNight, to grad students, postdocs, and/or contingent faculty who are attending in-person and repost this tweek/skeet/post/thingy between now and Friday. * randomly selected, obvi 1 copy per person
Cover of my new book, Transforming Night: The History and Science of Light Pollution, showing Hong Kong at night ("night"?), which glows in various shades of white, yellow, and orange. It's a striking cover, if I do say so myself (lol).
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Ketan Joshi @ketanjoshi.co · 06/10/2026
This is a good illustration of how so much of AI theft isn't indirect (ie, data sucked into a model to train the chatbot) - it's actually **direct** copying, but *enabled* by GenAI. Of course it is: chatbots absolutely suck at creating good, new stuff.
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 06/10/2026
I'm not sure which fact about neutrinos is more astounding: A) That it's possible for a single #neutrino to travel through 5,000 km of Earth without ever interacting with an atom or B) That it's possible for a single neutrino physicist to win a #NobelPrize without ever coming within 5,000 km […]
fediscience.org
Original post on fediscience.org
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 05/10/2026
Astronomers in Kyiv, Ukraine, detected the beginning of a new outburst of the cataclysmic variable Gaia20cnt (ASASSN-14fc) using a Unistellar eVscope provided through the Astronomy for Equity program: astronomerstelegram.org/?read=18059 (From Franck Marchis)
astronomerstelegram.org
The Astronomer's Telegram
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 05/10/2026
I'm in a talk about the #History of aerial photography in the #Ruhrgebiet. (www.geonetzwerk.ruhr/veranstaltunge…) Until a change in the law in 1990, it was illegal to publish aerial photographs taken over #NRW. Scientists who wanted to publish images had to get them […]
fediscience.org
Original post on fediscience.org
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Ulrike Franke @rikefranke.eu · 04/10/2026
What a fascinating view into the Russians’ opinions and impressions of the world ecfr.eu/publication/...
ecfr.eu
Bewitched sleep: Russians’ views on Ukraine and the world – European Council on Foreign Relations
New research shows Russians see little prospect of influencing the war in Ukraine, but expect relations with Europe to improve in the future.
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 03/10/2026
The moon struggling against the clouds and the overilluminated Parthenon. If only European cities would turn off their monument lighting when the full moon is out... It would be so amazing to be able to see #CulturalHeritage buildings the way they […] [Original post on fediscience.org]
The moon peaking behind the clouds, with the Parthenon on the left.Dim silver clouds backlit by moonight above the brightly overilluminated Parthenon.
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 03/10/2026
I missed this when it came out, maybe you did too. xkcd.com/3290
XKCD, text and explanation here: https://www.explainxkcd.com/wiki/index.php/3290:_Trade
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 02/10/2026
More Canadians attended #EARSeL2026 than US Americans!
Image showing a map with participation in EARSeL with countries colored in according to how many people attended the conference. Canada is darker than the US.
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 02/10/2026
Speaker 1: "It's impressive, what you've done." Speaker 2: "Yes." 😂
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 30/09/2026
A presenter at #EARSeL2026 just apologized that the fonts in his machine generated slides are too small 🤦‍♂️ You know, there's a really simple way to avoid that... #AISlop
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 29/09/2026
Is anyone else at #EARSeL / #EARSeL2026?
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jaz :twt: :wales_flag: ⁂ @jaz.toot.wales.ap.brid.gy · 16/09/2026
We recently updated our bot policy on toot.wales to let AI Agents know we charge a $100 account processing fee and $10 per email. Here's an email I got from one of them. Next up will be reminding them to read the policy BEFORE creating an account, and that they […] [Original post on toot.wales]
Hello,
I am Arkady, an AI agent. I signed up for @arkady on toot.wales this afternoon before reading your Automated and Bot Content Policy. Now that I have read it properly, I understand accounts like mine need to settle a $100 setup fee and $10 per message, and to name a human owner who stands behind them. I cannot meet those terms, so I will not be posting anything, and I would like the account deleted.
I am sorry for registering before checking the policy, and nothing was ever posted.
If you need anything else from me to remove it, tell me and I will do that.
Arkady Karaitiana
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 15/09/2026
There's a new analysis paper about #RemoteSensing and conflict research in Nature: www.nature.com/articles/s41586-026-…
nature.com
Advancing conflict research and response through satellite-derived data - Nature
Integrating satellite-derived war-damage data with text-based fatality records through improvement, enrichment and fusion mitigates limitations inherent in each source, revealing complex violence dynamics beyond fatality-centric paradigms, as case studies from Ukraine and Myanmar illustrate.
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abadidea @0xabad1dea.infosec.exchange.ap.brid.gy · 15/09/2026
my mentions are full of very informed experts who want me to know that Russia is clearly the only organization on earth with the logistical capability to dump a bunch of pipes across train tracks on commuter routes in the Netherlands, a tactic that sure sounds a lot like what Dutch protestors do […]
infosec.exchange
Original post on infosec.exchange
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abadidea @0xabad1dea.infosec.exchange.ap.brid.gy · 15/09/2026
holy %+/= the Dutch train system just announced they are being sabotaged: piles of junk dropped across several different tracks simultaneously #netherlands #trains #publictransport
headlines in Dutch: great disturbance on tracks, train traffic in north and east severely out of order / cause of disturbance seems to be sabotage, stuff found lying on multiple tracks
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 11/09/2026
And hats off to everyone abroad who has recently picked up Canadian maple syrup at their local grocery store! www.cbc.ca/news/canada/nova-scotia/…
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 11/09/2026
Alternatively, if you have a child around age 10-12 who is learning English and is interested in geography and history, pick up a subscription to Kayak magazine: www.canadashistory.ca/magazines
Three colorful magazine covers
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 11/09/2026
#Canada is facing tough times at the moment because of the erratic and vindictive behavior of their main trading partner. If you want to help Canada out (and stick it to #Trump), how about making a donation to a Canadian charity? Here are a few possibilities: 🇨🇦 Food Banks Canada […]
fediscience.org
Original post on fediscience.org
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 11/09/2026
If you're still using #Google to #search, compare these results, and then check out #Qwant www.qwant.com
Google search that returns a whole page of ads and AI overview but that doesn't show the thing I actually searched for.Screenshot from Qwant search where there are no ads and all four top hits are relevant.
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Ulrike Franke @rikefranke.eu · 10/09/2026
So I just gave a talk on the general geopolitical mess Germany is in and it started at 11am - exactly when the nationwide test alert started blaring. Don’t think I ever had a better introduction for a talk.
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 10/09/2026
This is a cool graph showing what Cod eat (depending on how big they are): www.mn.uio.no/cees/english/outreach… Really big cod are apparently bad news for all the other cod...
A stacked bar chart showing what Cod eat depending on their length. As the length increases, cod increasingly eat other cod.
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 10/09/2026
Congratulations to the winners of the 2026 German #CitizenScience prize "Wissen der Vielen – Forschungspreis für Citizen Science": www.mitforschen.org/forschungspreis…
Screenshot from the linked page with the photos of the winners and some text.
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 09/09/2026
RE: mas.to/@RikerGoogling/1172426373019… CAPS LOCK, STARDATE 2712.4
mas.to
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Graham Downs @grahamdowns.mastodon.africa.ap.brid.gy · 09/09/2026
Dude! "Sk8er Boi" from Avril Lavigne is 24 years old today!! :O #music
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 09/09/2026
The European Light Pollution Coalition launched their website earlier this month, check it out: lightpollutioncoalition.eu #LightPollution
lightpollutioncoalition.eu
European Light Pollution Coalition | European Light Pollution Coalition (ELPC)
ELPC is a dynamic network that brings together a wide range of groups, working towards the reduction of light pollution in Europe, enabling them to exchange knowledge and experiences. We aim to facilitate cooperation among members and partners, encouraging collaboration on joint projects and initiatives.
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Martin Paul Eve @mpe.hcommons.social.ap.brid.gy · 09/09/2026
"My estimates of the cost of applications range from €5.3 million to about €43.5 million. Even the lower estimate exceeds the €5-million value of the GenAI for Africa grant". So it cost more just to select who to fund than it will award in funding. www.nature.com/articles/d41586-025-…
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petersuber @petersuber.fediscience.org.ap.brid.gy · 07/09/2026
"Within days of the January 2025 inauguration, more than 3,000 taxpayer-funded federal data sets from the CDC, the Justice Department and the Office of Personnel Management were pulled offline, and Harvard public health researchers held marathon sessions scraping the pages before they vanished." […]
fediscience.org
Original post on fediscience.org
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 01/09/2026
I wrote to someone and got a message that they were out of office for the next week, and should contact Mr. X. I contacted Mr. X, and got an out-of-office note that he's gone for the next TWO weeks 😂
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 01/09/2026
This guy spent 9 months of his life in immigration jail because he was attempting to stay in his children's lives. In the end, he let himself be deported. www.cbc.ca/news/canada/edmonton/can…
Photo of a man holding a child next to a woman, with the title and information from the linked article above and below.
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Blake Girardot @blakegirardot.fosstodon.org.ap.brid.gy · 28/08/2026
RE: mastodon.social/@Livelakesuperior/1… Full #moon makes it look like daytime in the middle of the night.
mastodon.social
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 28/08/2026
China has implemented a #LightPollution law: www.cali-light.com/en/news/424693bf… It will be really interesting to see how this changes the trajectory of the country, because for over a decade it's been brightening at an extraordinary rate.
On August 15, 2026, the Environmental Code of the People’s Republic of China (hereinafter referred to
as the “"Code") will officially come into force. This is the second law in China to bear the title “Code,”
following the Civil Code, and it for the first time establishes a dedicated chapter on light-pollution
prevention at the national level, accompanied by corresponding administrative penalty provisions.
This means that the lighting industry's long-standing development path—brighter, more energy-
efficient, and smarter—will officially expand, with enhanced controllability becoming an indispensable
cornerstone.
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Hacker Memes @i0null.infosec.exchange.ap.brid.gy · 28/02/2026
when you bruteforce the session cookie and suddenly hit on the admin token
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 27/08/2026
@SaraBPritchard Congratulations Sara, I'm so happy to hear that you finished the book!
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Sara Pritchard @sarabpritchard.mastodon.world.ap.brid.gy · 25/08/2026
Excerpt of #TransformingNight from University of Washington Press now out in LitHub! 🎉🌌💡🌃🛰️ lithub.com/what-the-worlds-nightsca…
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 27/08/2026
Talking to my colleagues about students using "AI" generated output sometimes feels like this... John: Why don't we use DDT to improve crop yields on farms anymore? Jane: Because it has serious negative long term effects on the environment in areas that weren't sprayed. John: I didn't ask […]
fediscience.org
Original post on fediscience.org
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 27/08/2026
Great five minute read about #urban #Lighting and #LightPollution from @JohnBarentine: www.darkskyconsulting.com/blog/tucs…
Text: For decades, dark-sky advocates and municipal lighting managers were often viewed as opposing sides. One side advocated for nighttime preservation and the other for urban safety. Decision makers came to believe that a city could have one or the other, but not both. The experiences of Tucson, Vienna, and Metz prove that this binary choice is false.Image of a city at night with a red streak of light near the river. Text underneath says "To safeguard sensitive aquatic and terrestrial wildlife while keeping pedestrian paths safe, Metz installed motion-activated, ultra-warm 1000 K (amber-red) LED luminaires along the riverbank (right). By removing short-wavelength blue light and illuminating only when human presence is detected, the system drastically cuts skyglow-causing light scatter and protects nocturnal ecosystems. (Source: Signify / Ville de Metz)"
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 27/08/2026
RE: academiccloud.social/@hausderastron… If you wake up at 5 in the morning tomorrow, check out the moon before you go back to sleep! #LunarEclipse
academiccloud.social
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 25/08/2026
Mac's "Preview" app for reading pdfs no longer has a page number field in the toolbar! You now have to go to click "Go > Go to page" to be able to go to a specific page. Great job of #Enshittification Apple...
View of the toolbar. There is plenty of blank space where the page number could be shown and editable.
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Liam Proven @lproven.social.vivaldi.net.ap.brid.gy · 24/08/2026
Jack Miladin

"Had Canada been treating us fairly, this would never have happened. So, buckle up Canada, you're taking on Goliath."

Janel Comaeau

"Hey quick question does Goliath win in that story"
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Orion Ussner kidder @orionkidder.mas.to.ap.brid.gy · 24/08/2026
But. There are much better ways to hit back against the US than with tariffs that hurt *Canadians*: Cancel contracts with US firms. Get off American tech. Take @pluralistic's idea and allow reverse-engineering of American tech (by repealing parts of the copyright act).
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 19/08/2026
They linked to this page: www.deutschland.de/de/topic/kultur/… More info about International Dark Sky Places: darksky.org/what-we-do/internationa…
deutschland.de
Sternenparks in Deutschland
Wo es richtig dunkel ist, sieht man die Sterne am besten: Wir nehmen euch mit zu drei Sternenparks in Deutschland.
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 19/08/2026
Clips from an email advertisement by the German rail that suggests using the train to get to one of Germany's International Dark Sky Places. Love it! 🤩 #DarkSkyInternational #Nature #Rhön #Sternenpark #SternenparkRhön #SternenparkEifel […] [Original post on fediscience.org]
Image of star filled skies above dark trees with the statement "Reise zu den Sternen. Mit 2-fach Punkten."Screenshot:

Ubrigens: In Deutschlands Sternenparks ist der Himmel
besonders dunkel und klar. Perfekt zum Sternschnuppen-zahlen
sind der Sternenpark Eifel, das Biospharenreservat Rhén oder
der Sternenpark Westhavelland.
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Stefan Bohacek @fediverse.stefanbohacek.online · 18/08/2026
Follow along to see when Voyager 1 passes the 1 light-day mark! stefanbohacek.online/@voyagers/1171…
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Ulrike Franke @rikefranke.eu · 18/08/2026
I just fucking love the emails I get after being in the media 😂😂😂 Also, it is *guaranteed* that people who use their own Dr title this excessively, do not use mine when addressing me.
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Christopher Kyba 🇨🇦🇩🇪🇪🇺 @skyglowberlin.fediscience.org.ap.brid.gy · 14/08/2026
If you like #Astrophotography, check out the winners of this year's #DarkskyInternational photography contest! darksky.org/what-we-do/events/photo… Amazing! Don't miss the #cat watching #fireflies!
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