John Young @jsy1001@social.cleverlibre.org

Beautiful timelapse of Earth setting below the Moon's horizon captured by the Japanese lunar orbiter spacecraft Kaguya. ©JAXA/NHK

#moon #earth #japan #timelapse

If you are interested by those #photometeor, here is an amazing #picture of the #Sun with so many of them, as annotated on the second picture.

They are the result of #Sun's reflections and refractions into tiny ice crystals (in clouds or fog) of various shapes, which act as mirrors or prisms.

source: https://www.thisiscolossal.com/2019/12/michael-schneider-ice-halo-photograph/

credits: Michael Schneider

#photography #Halo

I suppose it’s the nature of the beast, but mathstodon.xyz seems to be dominated by people on the Pure end of mathematics. If you’re working in #AppliedMathematics or #Physics — give me a shout so that I can follow you!

Boosts for reach would be very much appreciated.

Over the years I've been lucky - have barely used the #NHS. But I was always grateful it was there, should I need it.

I had a hospital appt this afternoon. The nurses and doctors were wonderful; the process was efficient; the care was first rate.

I'm fine, and all is good.

But it seems our govt wants to destroy this incredible service. As I left the hospital I counted 11 ambulances waiting in a road, unable to discharge patients. There were more ambulances waiting in another road. Shameful.

I am 100% not shitting you when I say scientists named mastodons after their teeth which they thought looked like nipples. “Mastos” as in breast. “odont” as in tooth.
We’re on a website that, in Greek, literally means “Booby Tooth.”

We are not doing enough efforts...

We just hit #record high in 2022 in terms of #CO2 emissions from #fossil fuels.

This curve should go to #zero 0️⃣ if we want the #Earth 🌍 to stay an #habitable #planet !

source: https://www.carbonbrief.org/analysis-global-co2-emissions-from-fossil-fuels-hit-record-high-in-2022

#ClimateChange #GlobalWarming #Climate #sustainable #carbonfootprint

From how many stars formed in the Milky Way in the past, we can estimate that today's Milky Way contains about 100 million black holes [1,2 ⬇️]. Most of them we cannot detect.

Black holes in close binaries with normal stars - called X-ray binaries - are exciting, as we can observe their effects [3⬇️]. The #BlackHole draws matter from the companion. The stripped material spirals into the black hole, forming a hot accretion disc that emits observable X-rays.

#astrodon #astronomy #scicomm #sciart

Marvellous news: ALMA is back observing, after months of downtime following a cyberattack https://www.eso.org/public/announcements/ann22017/

Time to remember the magnificent cover from the 25th of December, 1947, “Edition Nöel” of the “Journal de Tintin”. Yes, it’s not a photo, nevertheless notice the absence of any #publiclighting, the #starrysky, the grey snow (it’s night, but that does not mean absolute darkness - natural #darkness is brighter than many could imagine). One might speculate that there’s no moon either, since there are no shadows. We are missing this possibility due to #lightpollution from millions of useless lights.

#YourBestAstroPic2022

It's time to vote.

There are 40 spectacular #astrophotography #pictures that were submitted to the #YourBestAstroPic2022 friendly contest.

Please everyone click on the hashtag

➡️ #YourBestAstroPic2022 ⬅️

and boost (or re-boost) any #photography you like (feel free to favorite but it doesn't matter).

On December 29, the most boosted #astronomy #photo will win.

#nightscape #night #sky #space #Astrodon

Ok this rules. E-ink retro Mac running on Pi. #pi #rpi #raspberrypi #retro #mac #macse #eink #retropc #retromac #diy https://www.yankodesign.com/2022/08/12/paper-thin-retro-macintosh-comes-with-an-e-ink-display-and-runs-on-a-raspberry-pi/ #3dp

It's really cool that Twitter shuts down in stages over two months so that the Mastodon servers aren't overloaded all at once, very thoughtful of them!

Awesome article by @ghuntley how opensource is becoming more fracturwd due to VSCode. Also shows how Microsoft's love for opensource has hidden agenda
https://ghuntley.com/fracture/

What happens when you twist your lens' focus ring while shooting long exposures of fireworks

#photography

Twitter blocks links to Mastodon, making a really good case for Mastodon https://techcrunch.com/2022/12/15/elon-musk-suspends-mastodon-twitter-account-over-elonjet-tracking/

If you have a poster printer, and a very long light curve of an interesting eclipsing system, then you can print out your data without sacrificing any detail! Here's a Masters student I am working with and the combined light curve she's generated. Seeing it plotted out in its glory is absolutely fantastic! Lots of dusty eclipses FTW.

Cameron Desautels: git: Quick Multi-Line Commit Messages https://camdez.com/blog/2022/12/13/git-quick-multi-line-commit-messages/

S. Winfrey wrote the following post Mon, 12 Dec 2022 20:37:12 +0200

In 1933, Nazis led torchlit mob into the square and looted the library of the adjoining -Universitat. 40,000 people cheered as they burned over 20,000 books by mainly Jewish, communist, liberal and social-critical authors. Many years later, a panel of glass was set into the ground to mark the spot. It’s a window. Leaning over you can look into a room below. The room is white, lined from floor to ceiling with plain shelves—an empty library. The sort of world we’d live in if the fanatics had won.

Happy WEAVE First Light day, everyone! 12.5 years of my life have led to this: https://www.ing.iac.es/PR/press/weave_LIFU_first_light.html

Mastodon and the Fediverse are at their best when you are following lots of people, not only because you see their posts, but because you also see the posts they share. Seeing lots of shares makes it much easier to discover stuff.

➡️ For tips on finding people to follow click here: https://fedi.tips/how-to-use-mastodon-and-the-fediverse-basic-tips/#HowDoIFindPeopleToFollow

Following people is how discovery works on here. There's no computer algorithm pushing stuff to you, instead there are millions of human beings manually sharing stuff they find interesting.