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Karen Masters

@karenlmasters

Prof. of Astronomy and Physics, Haverford College. PI of Galaxy Zoo. Radio astronomer. Check out my latest book “The Astronomers Library” about books, libraries and astronomy - three of my favourite things. Brit/US.

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Latest posts by Karen Masters @karenlmasters

The polar opposite of enshittification:
"What can we do to promote our tyre sales?"
"How about we write this guide to promote fine dining around the country?"
*chorus of "Oui!" and "Bien dit!" erupts in the board room*

09.03.2026 19:51 👍 26 🔁 3 💬 0 📌 0
Portrait of Émile du Châtelet by Maurice Quentin de la Tour

Portrait of Émile du Châtelet by Maurice Quentin de la Tour

For #WomensHistoryMonth: Let us celebrate the life and accomplishments of French mathematician and physicist Émilie du Châtelet (1706-1749). She spread the then-new ideas of Isaac Newton on the Continent, and played a key role in developing the idea of energy conservation. 🎢⚛️🧪 #WomenInSTEM 🧵1/7

10.03.2026 00:51 👍 20 🔁 11 💬 1 📌 0

Just bc I'm a nerd and bc our days of the week were named after gods who also have planets named after them...

I'm gonna do a daily thread on book about the corresponding planet!

Today is Monday which is MOON-DAY. So here are some amazing books on the Moon for sale 🌝

#ASPLibrary 🧪 📚 🔭
#BookSky 📚💙

09.03.2026 22:12 👍 29 🔁 8 💬 3 📌 1
"BE IT THEREFORE RESOLVED that we affirm the rights of students and teachers to refuse to sign up for, prompt, or otherwise use generative AI in the writing classroom."

"BE IT THEREFORE RESOLVED that we affirm the rights of students and teachers to refuse to sign up for, prompt, or otherwise use generative AI in the writing classroom."

College writing teachers have spoken, y'all.

The CCCC resolution affirming students' and teachers' right to refuse generative AI in the writing classroom passed by an overwhelming majority at the #4C26 Annual Business Meeting this past Friday, March 6.

Link to the full resolution below.

09.03.2026 21:17 👍 471 🔁 148 💬 5 📌 15

I hope everyone who checked out @hogg.bsky.social’s white paper on the implications of LLMs in astronomy and shared it across slack channels similarly perused and amplified this white paper of best practices for broadening participation in astronomy!

08.03.2026 21:40 👍 45 🔁 12 💬 0 📌 1

#sciart 🔭

08.03.2026 15:33 👍 48 🔁 10 💬 1 📌 0

"Just after starting on Cars 2, I was told by a superior that I would be uninvited from all weekly art department meetings because Lasseter 'has a hard time controlling himself' around young women... It was clear that the institution was working hard to protect him, at the expense of women like me."

08.03.2026 11:23 👍 1806 🔁 691 💬 16 📌 27
Yellow and white crocuses.

Yellow and white crocuses.

Spring is coming! 🌸🌼🪻

08.03.2026 15:44 👍 13 🔁 0 💬 0 📌 0
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What inspires someone to pursue physics for life?

From discovering general relativity to the encouragement of mentors, women in our community share the moments that shaped their journeys.

This #InternationalWomensDay we’re celebrating women advancing physics and inspiring the next generation. 🌟

08.03.2026 10:01 👍 210 🔁 55 💬 0 📌 1
Petition e-7195 - Petitions

To my Canadian friends, an acquaintance started a petition to allow US transgender citizens to claim refugee status here.

www.ourcommons.ca/petitions/en...

If you’re Canadian please sign it.
If you’re not, please share ❤️

06.03.2026 17:49 👍 890 🔁 874 💬 12 📌 26

My understanding as a Mandarin Chinese learner is that there is a similar set up there with “bu cuo” (不错) literally meaning “not bad” but actually meaning really good. Most of the time.

07.03.2026 14:07 👍 2 🔁 0 💬 0 📌 0

Reminded by a mail from @nccomfort.bsky.social that in UK English “quite” is a negative modifier unless applied to a superlative. So quite good, quite smart, quite tasty etc imply something less than good, smart, tasty. Quite excellent, quite brilliant, quite scrumptious are all better. But why?

07.03.2026 13:02 👍 13 🔁 2 💬 6 📌 2

Im a historian of vaccination.
Every semester/year since 2015, I teach the histories of smallpox vaccination.
And every semester/year, I have had anti-vaxxers/vaccine hesitant people in my classes.
If I want to change their minds, telling them how evil or stupid they are isn't going to cut it.

06.03.2026 18:09 👍 473 🔁 81 💬 30 📌 7
A white cat playing with a coloured ball with a long red string. A black cat lies nearby. Background is silver.

A white cat playing with a coloured ball with a long red string. A black cat lies nearby. Background is silver.

'Playing cats' - Takahashi Hiroaki, ca. 1930.
#Caturday #JapaneseArt

07.03.2026 03:14 👍 122 🔁 31 💬 1 📌 0

Thanks for the recommendation. The Haverford bookclub also mostly (many retired) female faculty and staff from humanities. Plus me and a male biology professor! But it’s great.

06.03.2026 12:45 👍 1 🔁 0 💬 1 📌 0
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Data Visualization A Practical Introduction

Here’s a full draft of the upcoming second edition of my “Data Visualization: A Practical Introduction”: socviz.co

05.03.2026 22:54 👍 539 🔁 172 💬 12 📌 15

Growing up in the UK where this is just not a thing and I don't think I will get used to it. In the UK you go to the Doctor, then you are done... In the US - you get bills, you have to push back on denied claims etc. etc...

04.03.2026 16:09 👍 0 🔁 0 💬 0 📌 0

My regular musing on how much money is wasted by how time intensive US medical bill payment (and understanding if your insurance covered something or not ) is to people...

04.03.2026 16:08 👍 0 🔁 0 💬 1 📌 0
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She’d Never Changed Her Gender Marker. Kansas Invalidated Her License Anyway. — Assigned A trans Kansas resident recently changed her name but not her gender marker on her license, fearing what Kansas may do if she did. The Kansas DMV still flagged her ID.

This story, from @natezuke.bsky.social, is absolutely wild. A trans woman who never changed her gender marker was issued a letter invalidating her license. At the DMV they cut up her license, which had an "M" marker.

www.assignedmedia.org/breaking-new...

03.03.2026 12:05 👍 3604 🔁 1639 💬 72 📌 267
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TOTAL LUNAR ECLIPSE | MARCH 3, 2026 | GRIFFITH OBSERVATORY YouTube video by Griffith Observatory

If, like me, the #TrollClouds have ruined your #LunarEclipse experience, which has now commenced - tune into Griffith Observatory's live feed.

The music is great!

03.03.2026 10:06 👍 159 🔁 55 💬 3 📌 4
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The majority of UK academic institutions now no longer post on X - LSE Impact For the first time, more UK universities and associated organisations are inactive on X than active.

💥New post | The majority of UK academic institutions now no longer post on X

✍️ @andytattersall.bsky.social

#AcademicSky #X #AcademicSocialMedia

03.03.2026 12:00 👍 121 🔁 49 💬 2 📌 5
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The first image off my camera of the Blood Moon. This is right at totality, 3:33 a.m. I did very little processing on this. I sharpened it. The light and color are exactly as they came off my camera. #astronomy #astrophotography

03.03.2026 11:59 👍 106 🔁 23 💬 5 📌 1
A night photo of the moon during the lunar eclipse, there is a hint of red in the illuminated area.

A night photo of the moon during the lunar eclipse, there is a hint of red in the illuminated area.

Totality, lunar eclipse. The moon has a very red color to it.

Totality, lunar eclipse. The moon has a very red color to it.

Lunar eclipse 3 March 2026 approaching totality and totality at 4:33am this morning. Mainly clear sky, handheld shots using a tree stump for a bit of stability so not as sharp as they could be, still, fun to see it all unfold.

03.03.2026 12:16 👍 115 🔁 23 💬 1 📌 1
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Galileo’s handwritten notes found in ancient astronomy text Discovery sheds new light on how famed astronomer came to lead a scientific revolution

🤓 Galileo’s handwritten notes found in ancient astronomy text

03.03.2026 12:08 👍 40 🔁 15 💬 6 📌 0
Flat boats on a river with trees alongside and a full moon low in the sky beyond.

Flat boats on a river with trees alongside and a full moon low in the sky beyond.

'Moon at Seba' from the series '69 Stations of the Kisokaido' - Utagawa Hiroshige, ca 1834.
#FullMoon #ukiyoe #JapaneseArt

03.03.2026 11:57 👍 78 🔁 16 💬 2 📌 0
A full moon in the sky reflected on still water on which a boat with three people is passing. Reeds grow on the shore in the foreground.

A full moon in the sky reflected on still water on which a boat with three people is passing. Reeds grow on the shore in the foreground.

'Moonlit Sea' - Koho, ca. 1930's.
#FullMoon #JapaneseArt

03.03.2026 11:49 👍 232 🔁 69 💬 5 📌 0

Hey, there is good news out there.

🔩🔧🧰🩻💉🧬🌡️🩺🔬🪄🎁 😅

Yeah @standupforscience.bsky.social
💌🙏✍️ @princess-vimentin.bsky.social 👏👍✊✊✊

👇👇👇👇👇👇👇

02.03.2026 15:50 👍 48 🔁 9 💬 0 📌 1

“No stupid rules of engagement” is a hell of a thing to say after killing 165 little girls at school in Minab, Iran.

02.03.2026 13:35 👍 115 🔁 43 💬 7 📌 1
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OPPORTUNITY: The Space Telescope Science Institute in Baltimore, MD, is searching for a Senior Full Stack Engineer to join the Web Application Services Branch, performing software development, support and maintenance of applications and processes to our NASA missions: https://bit.ly/4l9HF1Q

02.03.2026 14:54 👍 15 🔁 4 💬 0 📌 1
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OPPORTUNITY: The Space Telescope Science Institute in Baltimore, MD, is searching for a Senior Finance & Grants Analyst to support financial and operational efficiency across NASA-funded research programs, including Hubble, James Webb, and future missions: https://bit.ly/4rM6p2A

02.03.2026 14:55 👍 19 🔁 4 💬 0 📌 0