Christos Doudoulakis, PhD

@csath.bsky.social

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

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.

Nahel Belgherze@wxnb.bsky.social · 2w ago

I've never seen anything like it. Salta, Argentina, has just recorded its hottest night on record during the climatologically coldest time of the year. The minimum overnight temperature did not fall below 26°C (78.8°F), pulverizing the previous monthly record by 7°C.

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

After several days with overcast+dust, I finally had the chance to capture #comet #PanSTARRS C/2025 R3 on Sunday morning (19 Apr). The temporal obs. "window" was small (10-15') before twilight becomes too bright. iOptron skytracker used. Exp. time 5x1'. Tamron 70-200 f/2.8 + Sigma Art 14 mm f/1.8

Comet PanSTARRS in black and white with the starry sky as backgroundComet PanSTARRS in color with the starry sky as backgroundComet PanSTARRS zoomed in with a Tamron lens at 135 mm (x1.6 crop factor), with the starry sky as backgroundComet PanSTARRS on the twilight starry sky. A wide field photo in order to have a perception of its extent (together with its tail). On the top left, there are previous photos in color and black&white version

Comet MAPS may have not survived, but C/2025 R3 (PanSTARRS) is putting on a show in the early hours sky. As of 8 April 2026, it has grown a long ion tail, and there are hints of a dust tail and is visible with large binoculars. Perihelion is on 11 days. #cometWatch #astrophotography

A comet with a round, bright green coma and a long, structured tail with knots and streamers extending beyond the edge of the frame. There is also a short dust tail.

Equipment: 8-inch f/4 newtonian telescope, 294MC-Pro, guided Prometheus-astro tyr, controlled by StellaVita. 
30x30s, with moonlight interfering. Sitia, Crete. 
Edited with DSS, SIRIL and Ps.

A bit of a different take on the amazing Artemis II launch footage. Here I stitched clips from the four Solar Array Wing Cameras to make this panoramic video. This is during the later part of the Core Stage burn until MECO and stage separation, sped up to 10x. 🔭🧪 #Artemis

The fact that these breathtaking changes take place all around us (glaciers, weather patterns, seas, forests, etc), at least 2 orders of magnitude faster than any other period in Earth's past and thus can be observed within less than 1 human lifetime, should have been enough. But no...

Melaine Le Roy@subfossilguy.bsky.social · 4mo ago

Mendenhall Glacier 1987 | 2017 How glaciers are intimately linked to our lives 💙 And our lifestyle choices are causing them to disappear! 🏭🔥 When you think the lowest photo was already 10 years ago and that Mendenhall is now no longer in contact with the lake! 📈 Via MRI