Today it’s the Haverford College Science Center student summer research symposium. 🧪👩‍🔬🎢🔭

Comment period ends on Monday for a proposed rule change that would terminate student visas after 4 years. It also puts limits on exchange visitors and reps of foreign media, and shortens the length of time at the end of the visa from 60 days to 30 days. www.federalregister.gov/documents/20...

Blissful silence so far this morning…. But this is coming soon.

New composition: Autumn Leaves.

This is just one of the many ways that federal money is being pulled away from grad students, and by extension universities..this is not the first move, and it won't be the last.

What A Circle With 5,000km Radius Centred On Paris Looks Like On A Mercator Map brilliantmaps.com/5000km-ra...

George Smoot, explorateur de la soupe cosmique primordiale et Nobel de physique, est mort

Seemingly only being reported in the French media so far - George Smoot passed away. He won the Nobel Prize in Physics for his work on the cosmic microwave background (shared with John Mather) 🔭

Haverford News article about my recent grant funding success just posted. Odd time to be getting (three!) federal grants, but hopefully will give some hope that at least some things are moving (including all the galaxies!): www.haverford.edu/marketing-an... 🔭👩‍🔬🧪

In a delightful demonstration of what it means to work in a liberal arts college, I am also the Committee Chair for this search for a new Director of the Writing Program at Haverford: www.haverford.edu/provost/news.... Lots of time working on hiring for me this year!

I'm hiring at Haverford - a 2 year NASA funded postdoc to work on Galaxy Zoo with Roman Space Telescope Data: www.haverford.edu/human-resour... 👩‍🔬🔭

New - “Hundreds of federal employees who lost their jobs in Elon Musk’s cost-cutting blitz are being asked to return to work.” www.cnn.com/2025/09/24/p...

It's weird - but now in Oslo, there's so many EVs that you notice the noise and the smell from individual ICE cars, and you realise how much we've been normalising it for ever. You can smell them half a street away. And inside parking lots are just *quiet*.

I am not actively learning either but this still sounds awesome!

The problem isn't autism. It's fear and hatred of autism. The problem isn't trans people. It's fear and hatred of trans people. The problem isn't immigration. It's fear and hatred of immigrants.

Happy 100th anniversary to Cecilia Payne-Gaposchkin’s extraordinary thesis!

Cecilia Payne-Gaposchkin ✨ figured out what stars are made of ✨ when she was just 25. 🔭🧪 Her PhD thesis basically established the Harvard astro department — at a time when Harvard didn't officially allow woman students. I wrote this little profile to mark the 100th anniversary of her thesis:

Welcome Autumn 🍂

Trump’s inability to pronounce “acetaminophen” raises new questions about Joe Biden’s mental state.

Alt text: Heading: “Humpty Dumpty had a great fall” 4 pictures of Humpty Dumpty, an anthropomorphized egg: - going for a brisk walk with autumn leaves everywhere - carving a pumpkin - reading near a cozy fireplace under a blanket next to a sleeping cat - picking apples

Owlet is judging you.

A little watercolour I’ve been working on, which all got a bit hypnotic for some reason. #oaktrees #savethebutterflies #inverts #nature #wildlifeart #teammoth

Friends, did you know that @ligo.org and @ligomagazine.bsky.social were on Bluesky? If you want to keep up to date with the gravitational wave world go follow them! 🧪🔭

Right out of every anti vaccine list of discussion points.

The official number of exoplanets has surpassed 6,000! And you can access data on all 6,007 of them right here at IPAC 📈 🪐 Watch the video & read all about the center of the exoplanet universe (also known as NExScI!) here: www.ipac.caltech.edu/news/the-nas...

Pretty sunset Monday night. I’ve been distracted since took this. I fell victim to the observatory stairs shortly after. Luckily just a sprain… but observatories are dangerous places as I warn my students, and this year demoed for them. 🔭👩‍🔬

The elephant in the room....🐘🐘🐘🐘🐘🐘 Bodleian Library Arch. G b.6; Historia naturale di Caio Plinio Secondo, tradocta di lingua latina in fiorentina per Christophoro Landino; 1476 CE; Italy (Venice); f.93v @bodleian.ox.ac.uk

A spiral galaxy, observed with the Apache Point 2.5m Telescope in the SDSS survey. It is at redshift 0.050 (lookback time 698.4 million years) with coordinates (254.99742, 36.02908). 44 volunteers classified this galaxy in Galaxy Zoo 2.

Just got asked by an elderly gentleman where I go to college. Which seems kind of laughable but also is a reminder that it’s all a matter of perspective.

41 Cozy Little Birbs

Fun explanation of precession with interactive graphics (themed to hook astrology fans). “Your Zodiac Sign Is 2,000 Years Out of Date” www.nytimes.com/interactive/...

Saw @karenlmasters.bsky.social's book on the shelves of Book City in Toronto and just had to pick it up! I love the cover.

Dedication to book I just started. Think I might enjoy this one!

Met Mae Jemison once at Cornell (as part of the large audience of a talk she gave). She is an incredibly impressive person. Her description of how badly the astronaut suit gloves fit her long slender hands sits with me as an example of exclusionary design.

As well as learning about Emmy Noether and how she ended up at Bryn Mawr I got to ride on the new(ish) electric bus service connecting Haverford and Bryn Mawr. ⚡️👩‍🔬🧪

At nearby Bryn Mawr for lunch and then a talk on Emmy Noether and connections to Bryn Mawr. 👩‍🔬🧪

Haverford College observatory opening up for use in advanced observational class this evening. 🔭

Husband sent me a picture of my book “The Astronomer’s Library” in the wild in the UPenn bookstore. Awesome!

Well I managed it - taught two classes within 36 hours of getting back from taking daughter to uni in the UK (Edinburgh). I am a bit tired now.... but worth it to see her settled happy.

It's my birthday!! I'm 49 - how did that happen? I would LOVE it if you could share or follow my art for my birthday, that would be a brilliant gift! Thank you everyone who follows and comments, it is such a great place here! 49 feels ace btw. #artshare #birthday #watercolour www.emilyhare.co.uk

Approximate scene at Newark International Airport Train station. This is one of the busiest transit hubs in the NE corridor. There are two trains in the next four hours from here to Philly.

The garden is a magical place 📷🧚…

A spiral galaxy, observed with the Apache Point 2.5m Telescope in the SDSS survey. It is at redshift 0.059 (lookback time 819.8 million years) with coordinates (196.80832, 4.19445). 43 volunteers classified this galaxy in Galaxy Zoo 2.

Proud of Tessa Pearlstein (Haverford class 2025) for getting her senior thesis work on comparing bar and spiral pattern speeds in MaNGA galaxies published as a RNAAS: doi.org/10.3847/2515... #astronomy #astrosci

The first citizen science project using NSF–DOE Rubin Observatory, Comet Catchers ☄️, has already passed 1.5 MILLION classifications on @zooniverse.bsky.social 🤯 Now that's what we call teamwork! Find Comet Catchers (and other Rubin projects as they go live) at zooniverse.org/rubin 🔭 🧪

You might have heard of this company that wants to put giant reflectors in space to "light up" parts of the earth. It would be catastrophic not just for astronomers, but for...any people or creatures who thrive at night. Have comments? The American Astronomical Society would love to hear from you.

3I/ATLAS has a growing tail. Still not a spaceship though, despite what some, um, less-than-reality minded people might claim. noirlab.edu/public/news/... 🔭🧪

RFK Jr. rolled out that old chestnut again about how healthy Americans were in the 60’s, so here’s a fact check. In 1965: -42% of American adults smoked; it’s 11% now. -The infant morality rate was 24.7/1000; it’s 5.6/1000 now. -Overall life expectancy was 70 years; it's about 77 years now.