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Christos Doudoulakis, PhD

@csath.bsky.social
260 followers 224 following 349 posts

PhD in High Energy Physics - Freelance Writer (Physics, Maths, Pop. Sci.) - Stormchaser - Founding Member of the Greek team of TLE chasers - Photographer - Teacher / doudoulakis.blogspot.com

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Christos Doudoulakis, PhD @csath.bsky.social · 04/10/2026
Awesome! Real gold! It lived up to its name (Chrysalis - Χρυσαλλίς - from "χρυσός", gold)
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Christos Doudoulakis, PhD @csath.bsky.social · 02/10/2026
Does he speak English or something?
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Christos Doudoulakis, PhD @csath.bsky.social · 22/09/2026
Around 20 #red #sprites occurred at ~00-01 UTC, 22 Sep. 2026 over the northern #Aegean Sea close to #Lemnos isl. Four of these events follow, as they were captured from the eastern coast of Attica.
Red sprites through clouds over seascape and the mountains of Evia isl.Red sprites in a cloudy and starry skyRed sprites in a cloudy and starry skyRed sprites in a cloudy and starry sky. The horizontal lines in front of the sprites are thin clouds
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Reposted by Christos Doudoulakis, PhD
Valérie Masson-Delmotte @valmasdel.bsky.social · 17/09/2026
Rapid Warming in the Himalaya Exacerbates Geohazard Cascades Beyond Adaptation Limits www.worldweatherattribution.org/rapid-warmin...
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Christos Doudoulakis, PhD @csath.bsky.social · 13/09/2026
So sad! I'm so sorry for your loss 😞
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Christos Doudoulakis, PhD @csath.bsky.social · 03/09/2026
Chiron ("χιρον") indeed.
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Christos Doudoulakis, PhD @csath.bsky.social · 27/08/2026
17 years of love. I'm sorry for your loss
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Christos Doudoulakis, PhD @csath.bsky.social · 27/08/2026
😶 This is a completely different level. These events exhibit an increasing frequency around the planet, from the Alps to India and Nepal.
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Christos Doudoulakis, PhD @csath.bsky.social · 26/08/2026
No words. No reason for any of this to happen.
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Christos Doudoulakis, PhD @csath.bsky.social · 26/08/2026
An addition to the very informative list: 1987, Greece, officially 1300 dead (mostly in Athens), unofficially 3000-4000. It was the first heatwave of the modern era. Unprecedented. 6+ days with over 40 deg. No air-conditioning. After that they all bought one. link.springer.com/article/10.1...
link.springer.com
A contribution to the study of the extreme heatwave over the south Balkans in July 1987 - Meteorology and Atmospheric Physics
In this paper, an attempt is made to study the atmospheric circulation, which caused the extremely hot weather in the Balkans and south Italy during the time period from 19 to 27 July 1987. Also, base...
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Reposted by Christos Doudoulakis, PhD
Jure Atanackov @jureatanackov.bsky.social · 24/08/2026
Just how quickly an activity surge happens: this is the Sun from Oct 18th to Nov 4th, 2003. Note the *3* enormous & complex active regions popping up. This was later in the cycle than where we are currently at, so there is still hope that we will see more severe space weather before solar minimum.
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Christos Doudoulakis, PhD @csath.bsky.social · 22/08/2026
Oh yes we have. A prime minister and his gang. No rules, no laws, only scandals. Feels like trump? I agree!
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Christos Doudoulakis, PhD @csath.bsky.social · 21/08/2026
Unfortunately, this started happening here too the last 2 years. Car racing in the center of the city, in the middle of the day (not weekend), with no warning. Closing main roads for hours. You can imagine what happened...
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Christos Doudoulakis, PhD @csath.bsky.social · 20/08/2026
Sometimes, I'm thinking of that too. The closest experience I had of this, was while being on mountains at an altitude of over 2 km. Absolute silence. But, you still have lights from below, although fainter. Noise and lighting (esp. led) at night is frustrating!
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Christos Doudoulakis, PhD @csath.bsky.social · 19/08/2026
Opposition effect (the white aura around Ingenuity's shadow) clearly seen as well.
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Christos Doudoulakis, PhD @csath.bsky.social · 15/08/2026
Observing how terrible was Germany's decision, and after the blackout they had a year ago, they seem to think again about this totally non-sense decision of shutting down nuclear, instead of boosting it alongside with "renewables".
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Christos Doudoulakis, PhD @csath.bsky.social · 14/08/2026
Data from Global Meteor Network confirms that in this year's peak of #Perseids there were more meteors and more bright ones
Graph showing the peak of Perseid meteor shower activity for 2026
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Christos Doudoulakis, PhD @csath.bsky.social · 13/08/2026
If you find some time during the next few nights and the weather gets better, give it a try if you want. Even 1-2 weeks after their peak, they still have some nice "surprises" 🙂
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Christos Doudoulakis, PhD @csath.bsky.social · 13/08/2026
#Perseids 2026 were by far the best since 2016 outburst. There was an increased number of #fireballs, as well as periods with 3, 4, even 6 #meteors within a few seconds. Best period: from twilight till midnight. Shots from cape #Sounion #Attica #Greece night of 12 Aug. Circular fisheye is 4.5 mm...
Large meteor (fireball) near Milky way over seascape with some ships and a small island full of wind turbinesLarge meteor (fireball) near Milky way over seascape with some ships and a small island full of wind turbinesBright meteor with very long trail as shot by a circular fisheye lens with f.length of 4.5 mmBright meteor which flashed like a lightning and its ionization train lasted at least for 1'. Shot with a circular fisheye lens of f.length 4.5 mm
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Reposted by Christos Doudoulakis, PhD
dimkate.bsky.social @dimkate.bsky.social · 13/08/2026
What a celestial event! The fact it was near the horizon made it look even bigger! And got the reflection of the corona over Sil river. A pity it lasted barely over a minute. #solareclipse2026 #eclipse
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Reposted by Christos Doudoulakis, PhD
Dan Burns @the-physics-well.net · 06/08/2026
A Sunado? No, it's just a swirling tower of plasma interacting with the Sun's magnetic field and gravity. 3-hour time-lapse taken yesterday morning. Lunt 50mm double stack, ZWO ASI178MM, each frame made from 15s video taken at 15 s intervals. Thanks Autostakkert and ImPPG! #astrophotography
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Reposted by Christos Doudoulakis, PhD
Don Davis @ddavisspaceart.bsky.social · 08/08/2026
The Sunset of August 7, 2026 featured only a few fairly distant clouds low on the Western horizon, but with a 55-250 mm lens I could zoom in on an intriguing adornment, an 'Sun Pillar' forming a fuzzy vertical bar of light as the reddening sunlight was reflected by roughly aligned ice crystals.
This is a panorama made from two digital SLR  frames obtained of a cloud as it was being lit from underneath by the last rays of the Sun,  hidden from the ground but still shining on the fairly distant and high altitude cloud. A bright vertical glow at the right is a Sun Pillar', which is the Sun bring reflected by fairly uniformly aligned ice crystals. This Pillar assumes the color of the light source.   This series of photos of the Sun Pillar accompanying the Sunset of August 7, 2026 shows the lighting changing in direction and color on the clouds. The 'Sun Pillar' persisted until the last rays left the clouds, the color becoming deeper red as that light passed through greater distances of atmosphere as seen from there.
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Reposted by Christos Doudoulakis, PhD
Hourly Cosmos @hourlycosmos.bsky.social · 06/08/2026
Mars - Frost in Utopia Planitia - NASA Viking Lander 2 - From Andrea Luck (andrealuck.bsky.social) - flic.kr/p/2oDimoo
VIKING LANDER 2- CAMERA 1
SOL 960 / 1979-05-18 local time 12:50:43Z
Raw data processed from: pds-imaging.jpl.nasa.gov/
Product IDs:
21i093rd 
21i093gn 
21i093bu

Download this image: www.flickr.com/photos/192271236@N03/52930637274/sizes/o/

Credit: NASA/JPL-Caltech/AndreaLuck

Feel free to share, giving the appropriate credit and providing a link to the original image or tweet: creativecommons.org/licenses/by/3.0/
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Christos Doudoulakis, PhD @csath.bsky.social · 05/08/2026
"In 2021 Mitsotakis said that Greece would not build nuclear power plants because of the risk of earthquakes in the region." -- From this sentence alone, one can understand what kind of clowns we have as politicians in this failed state called "Greece".
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Christos Doudoulakis, PhD @csath.bsky.social · 04/08/2026
And the regime? blames it to climate change, despite the fact that many of those ministers don't even know what it is or they are typical far-right Flatearthers. 2/2
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Christos Doudoulakis, PhD @csath.bsky.social · 04/08/2026
5 dead firemen in 1 week! And we didn't even have heatwaves like previous years. The far-right regime in GR refuses to hire more than 4000 people *needed* for firefightning. The result? The remaining few firefighters are literally giving their life. 1/2
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Reposted by Christos Doudoulakis, PhD
cira-csu.bsky.social @cira-csu.bsky.social · 29/07/2026
Earlier this morning, moonlight illuminated the eye of Super Typhoon Dolphin.
This image of Super Typhoon Dolphin is in the Day-Night Band (NCC) product from the NOAA-20 weather satellite from 14:35 UTC on 2026-07-29.
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Christos Doudoulakis, PhD @csath.bsky.social · 27/07/2026
And the video from that day. It is divided in 4 parts. A) FFW of the storm B) Selected bolts C) [With Sound] the gust front D) Selected bolts with the Parthenon on the foreground www.youtube.com/watch?v=9jm1...
youtube.com
Supercell Athens 24.07.2026 [4K]
YouTube video by Christos Doudoulakis
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Christos Doudoulakis, PhD @csath.bsky.social · 25/07/2026
Brief non-tornadic #supercell with lots of CGs, #hail and severe wind gusts over #Athens today (Jul 24).
CG lightning, the city (bottom), clouds (top), thunderstorm coming inCG lightning, the city (bottom), clouds (top), thunderstorm coming inParthenon and Acropolis with southern Athens and CG lightning at the seaParthenon and Acropolis with southern Athens and CG lightning at the sea
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Christos Doudoulakis, PhD @csath.bsky.social · 22/07/2026
😍
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Christos Doudoulakis, PhD @csath.bsky.social · 22/07/2026
What a beauty!
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Reposted by Christos Doudoulakis, PhD
Mayor Zohran Kwame Mamdani @mayor.nyc.gov · 22/07/2026
Benjamin Netanyahu is a war criminal.
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Christos Doudoulakis, PhD @csath.bsky.social · 21/07/2026
This is the same with the low temperature we had that night in Athens... BUT: a) They are in the middle of their winter b) at 1220 m This is a 23.2 deg. *deviation* or anomaly. Imagine in winter to have 26 deg instead of 3, as a *minimum* temperature.
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Christos Doudoulakis, PhD @csath.bsky.social · 19/07/2026
Thank you! Can't wait for the next "break". I've missed them
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Christos Doudoulakis, PhD @csath.bsky.social · 19/07/2026
From #dusk till #dawn, #Sounion, 17-18 Jul. 2026. An astro-break much needed. Next stop: Perseids (on a new moon this year 😍)
Just after sunset, the sea (below left), some terrain, hills and rocks on the right and the sky above. Looking westwards from SounionScorpius constellation over the sea. An island far away at the center of the photo. Looking southwards from SounionA green meteor could have left its reflection on the sea surface, as it was close to the horizon, if it wasn't for this moving Betelgeuse's supernova simulation. Actually, this is a fisherman's boat (yeah...) and the light curves all around it are several dozens of seagulls following it. I must admit that after several facepalms (with both hands), it wasn't that awful, thanks to the light painting of the seagulls mostly.Colors of dawn, looking northeastwards from the hill near cape Sounion. Some clouds in the sky, the sea below, Makronisos isl. far away in the center, part of east Attica below, on the left side.
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Christos Doudoulakis, PhD @csath.bsky.social · 17/07/2026
I guess it's *too* ridiculous even for that
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Christos Doudoulakis, PhD @csath.bsky.social · 15/07/2026
Awesome but, this is a gigantic jet.
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Reposted by Christos Doudoulakis, PhD
Álfheiðr @sphecida.bsky.social · 13/07/2026
The tiny snake that lives on my back doorstep. DeKay's brownsnake (Storeria dekayi)
The tiny snake that lives under my garden sprayer. Pill bug for size comparison.
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Christos Doudoulakis, PhD @csath.bsky.social · 11/07/2026
What do you know! I have the same today! Looks delicious!
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Christos Doudoulakis, PhD @csath.bsky.social · 09/07/2026
A few shots from today's #thunderstorm
Microburst with hail over the northern suburbs of Athens. A hill with buildings in the foreground and clouds in the backgroundDouble lightning with rain over the cityA lightning bolt prevails over the cityLightning at the sea with the southern parts of Athens and Acropolis with Parthenon in the foreground
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Christos Doudoulakis, PhD @csath.bsky.social · 01/07/2026
"People were dying and being told they deserved it for their sins." This is such a typical phrase by religious apes globally. I first heard it by a greek monk who was entitled as "saint" after his death. He was just a sexist and a racist and sometimes he was talking about "god" as a punisher...
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Christos Doudoulakis, PhD @csath.bsky.social · 24/06/2026
I won't be surprised to see it by 2036.
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Christos Doudoulakis, PhD @csath.bsky.social · 23/06/2026
A record like this for Greece, would mean to reach 51 deg. Celsius in Athens for June (current June all time record 46.2). What happens in W. Europe, once more, these days, is beyond words.
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Christos Doudoulakis, PhD @csath.bsky.social · 23/06/2026
No words... (once more...) 😡😢
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Christos Doudoulakis, PhD @csath.bsky.social · 17/06/2026
Two more #thunderstorms today (17 June). Some #lightning shots and a #circumzenithal arc for a peaceful ending
The southern part of Athens, Greece, with 2 lightning bolts and cloudy sky at noonThe western part of Athens, Greece, with lightning, rain shaft and cloudy sky at noonThe western part of Athens, Greece, with a triple lightning, rain shaft and cloudy sky at noonA circumzenithal arc among clouds. Looks like a rainbow with the sunlight coming from below.
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Christos Doudoulakis, PhD @csath.bsky.social · 13/06/2026
#Summer #storms, yesterday ⚡
A CG lightning triggers an "inverted" one, GC, in the background, possibly from wind turbines. The photo shows lightning with the northern parts of Athens in the foreground, hills and mountains in the middle and stormy clouds on top. On the bottom left, there is a small image zooming in on the ribbon-y nature of the CG strike.Storm clouds over the city and mount Parnitha in the middle.Flights were diverted to avoid the noon supercell (see plane on the center top). Pileus clouds and towering cumulus in the middle.Thunderstorm far away to my southwest side. The southwestern part of the city below. Acropolis with Parthenon can be seen in the lower left side. On the left side one can see part of the belfry of a church on the hill I was.
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Reposted by Christos Doudoulakis, PhD
Peter Tennant @pwgtennant.bsky.social · 10/06/2026
I sometimes log back into X to see who's still active. I am always disappointed. But it's the journals, employers, & other health organisations that shock me most. The message this sends about culture & values is so negative. From a quick scroll, I saw JAMA, Lancet, BMJ, APHA, Wellcome, NCRM, etc
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Christos Doudoulakis, PhD @csath.bsky.social · 09/06/2026
I never understood why we *have* to reverse "plunging" birth rates. We are already 8.3 billion. Let's take a small break. Most people are having kids just because they "have to", and don't know what to do with them.
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Christos Doudoulakis, PhD @csath.bsky.social · 26/05/2026
I agree more or less. It's funny though because religions do exactly the same thing (impact everything from work to war). At least AI shares some knowledge and can open pathways for the solution of great problems if used correctly. Religions share lies, war and dark ages by exploiting faith.
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Christos Doudoulakis, PhD @csath.bsky.social · 24/05/2026
Short-lived #iridescent #contrail this #afternoon. This occurs as a result of #diffraction of the #sunlight from the microscopic #ice crystals in the contrail, when the latter has an angular separation of ~10-30 deg. (here ~20) from the light source (here the Sun).
iridescent contrail in the sky and a zoomed-in version of it on the top right
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