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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 22/09/2026

take Oct 1 off to make up for lost play time??

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Louigi Addario-Berry @louigi.bsky.social · 09/09/2026

I'm proud to announce the creation of the Association for Human Mathematics. We aim to protect mathematics as a human endeavour against the threat of AI and to maintain the independence of the mathematical community from corporate interests. www.ahmath.org

ahmath.org

AHM

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John F Wu @jwuphysics.bsky.social · 02/09/2026

Important for #astrosky: Overleaf seems to upgraded to TeXLive v2026 in the past few days, and as a result, your aastex v7 / aasjournal v7.1 might be broken. To fix it, go to Overleaf's File > Settings > Compiler > TeX Live version > [select 2025] www.overleaf.com/blog/tex-liv...

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leftylady.bsky.social @leftylady.bsky.social · 29/08/2026

Texans, if you’re one of the people who had their voter registration suspended, there’s still time to fix it! trib.al/OP3mVj5

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Reposted by 💀Adina Feinstein PhD 💀

Mark Hamill @markhamillofficial.bsky.social · 21/07/2026

🎯

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 17/07/2026

not us ending virtual group meeting today by saying don't breath the cigarette air outside and don't eat your vegetables 😭 #MichiganLife

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 17/06/2026

for the first time, we find the temperature and the umbral-to-penumbral area ratio of the spots on V1298 Tau are consistent with solar, although the number of spots is VERY different! our work highlights how exoplanet transits can probe stellar photospheric properties 🔍 similar to Murray+2026!

graphs showing the umbral-to-penumbral area ratio versus contrast of the starspots on V1298 Tau. the values are consistent with solar

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 17/06/2026

we combine the JWST observations with contemporaneous g' and r' band observations from the Las Cumbres Observatory, giving us a global view of V1298 Tau by fixing the spots along the transit chords and fitting the light curve, we achieve a global view of the spots on this young solar analog!

two light curves of V1298 Tau spanning 20 days. The top light curve is V1298 Tau observed in g' band. The bottom light curve is V1298 Tau observed in r' band. We fit the light curves assuming different spot properties of the host star

example best-fit spot maps of V1298 Tau. the star like has spots along the equator, close to the equator, and at the pole

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 17/06/2026

We observed transits of V1298 Tau cdb and found... a lot of spots. like so many spots. Using fleck, we find the transits are best-fit by ~6 spots per transit chord by measuring the change in spot amplitude as a function of wavelength, we measure the umbral and penumbral temperatures of the spots!

JWST light curves of V1298 Tau c (top row) and V1298 Tau d + b (bottom row)

best-fit spot maps for V1298 Tau c (top) and d+b (bottom). We find that there are ~6 spots along the transit chords of each planet

starspot contrast spectra (wavelength vs. contrast). the contrast spectra are best-fit by three-temperature components, including the photosphere, umbra, and penumbra spot components

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 17/06/2026

We're back with Part II - A detailed analysis of the starspots on the young solar analog V1298 Tau as viewed with JWST @jwstobserver.bsky.social and LCO led by MSU postdoc Matthew Murphy 🌟 #stellarastro check out the manuscript here 👉 arxiv.org/abs/2606.16782 👈 and the big takeaways below!

screenshot of the title and authors of a manuscript.
Title: "KRONOS II: Solar-like Umbra and Penumbra Properties on the Young Sun V1298 Tau"
First Author: Matthew M. Murphy

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 03/06/2026

This is all cool because planets are cool, but what about the spots? Well... Stay tuned for a follow-up paper in the next few weeks where we fully characterize the spots on this young solar analog to see how they differ from the Sun 👀🌟

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 03/06/2026

We detected water in the atmosphere of the planet! From our retrieved water abundance, we find that V1298 Tau c has a low-metallicity atmosphere! This is consistent with other young planets and suggests that planets likely evolve to have metal-enriched atmospheres 👀

the 0.8-2.8 micron transmission spectrum of V1298 Tau c shows clear water absorption features

mass vs atmospheric metallicity for young and mature exoplanets. the young planets are offset and have lower metallicities than the mature planets

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 03/06/2026

We observed a single JWST NIRISS/SOSS transit of V1298 Tau c. During its transit, we identified SIX (!) starspot crossing events!! We tried to fit the transit using different frameworks to account for the spot crossings (masked, gaussians, fleck, or gp). Regardless of how the spots were fit...

JWST NIRISS/SOSS white light curve fit with four different methods: masking, gaussian functions for the spot crossing events, using fleck, and throwing a gaussian process at the light curve

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 03/06/2026

after a wild ride, I am so so so excited to have the first paper of our JWST KRONOS program out! "KRONOS I: The 1−2.8µm JWST Transmission Spectrum of the 23 Myr V1298 Tau c" led by MSU postdoc Matthew Murphy 👉 arxiv.org/abs/2606.03740 👈 (short summary thread below) #stellarastro #planetsci 🧪

Screenshot of the title and authors of a recent peer-reviewed paper. the title: "KRONOS I: The 1-2.8 micron JWST Transmission Spectrum of the 23 Myr V1298 Tauc" led by Matthew M. Murphy

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AAS Nova @aasnova.org · 02/06/2026

Elise Koo reports for @astrobites.bsky.social on how researchers have taken advantage of the unique TOI-3884 system to directly probe a starspot with JWST. aasnova.org/2026/06/02/t... 🔭

aasnova.org

The First Starspot Spectrum Revealed by JWST

Astrobites reports on how researchers have taken advantage of the unique TOI-3884 system to directly probe a starspot with JWST.

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 01/06/2026

This is a cat check point. Relinquish your most recent cat picture on your phone

Two orange cats and one black and white cat snuggling together on a fluffy gray doggy bed

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Reposted by 💀Adina Feinstein PhD 💀

Julie Libarkin @holdingupthesky.bsky.social · 27/05/2026

#nsf canceled #geoscience postdocs. That’s nifty. Let’s pretend we aren’t messing up the planet and be super sure to stop training people who can help. eos.org/research-and...

eos.org

NSF Eliminates Geoscience Postdocs - Eos

The National Science Foundation (NSF) has eliminated its postdoctoral fellowship funding for Earth scientists.

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Space Telescope Science Institute @stsci.edu · 06/05/2026

Michigan State's Darryl Seligman discusses how interstellar interlopers and dark comets are challenging our understanding of the behavior and properties of comets and asteroids. Today's lecture is part of the weekly 2026 Spring Colloquium talks at STScI.

A person is giving a presentation in a lecture hall with attendees seated in rows. The slide on display discusses 2I/Borisov, a comet, and features an accompanying image of the comet.

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ESA Space Science @science.esa.int · 28/04/2026

Welcome to the new fellows selected to pursue their research in space science at ESA! Their projects span a broad range of topics from investigating the nature of dark matter to learning how Jupiter’s atmosphere works. Discover more about them 👉 www.esa.int/ESA_Multimed... 🔭 🧪 ☄️

Graphic with spacey background, a title 'Research Fellows in space science 2026' and photos of the six new Research Fellows in Space Science 2026 with their names: Emma Esparza-Borges, Ekaterina Ilin, Gregor Rihtaršič, Peter Stephenson, Paola I. Tiranti, and Jiří Žák.

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Jasmine 🌌🔭 @astrojaz.bsky.social · 27/04/2026

i feel like society moved on from these too quickly

$A solar eclipse, captured from a camera mounted on one of the Orion spacecraft\u2019s solar array wings during the Artemis II crew\u2019s flyby of the Moon\u2019s far side. The Moon is dark, save for a bright halo of white light surrounding it. The Orion spacecraft is in the leftmost half of the image, mostly shadowed.$ The Moon and crescent Earth from Artemis II

The Moon and crescent Earth from Artemis II

$A crescent Earth setting behind the Moon\u2019s horizon. Credit: NASA$

A full disk image of Earth, as seen from the Orion capsule. The planet is a pale blue, swirling with white clouds and glowing slightly lighter blue in place from reflected light. From about 8 to 9 o'clock, a large brown landmass is Africa, with the Iberian peninsula twinkling with lights just where the planet curves. At the 1 o'clock spot, aurora glow in a thin green glow, just barely separated from the planet's surface. Earth is set against the black of space. Credit: NASA/Reid Wiseman

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Reposted by 💀Adina Feinstein PhD 💀

Science Magazine @science.org · 25/04/2026

U.S. President Donald Trump has fired all 24 members of the National Science Board, the body that oversees the National Science Foundation. scim.ag/4cxQWhl

scim.ag

Trump fires NSF's oversight board

Dismissal of the National Science Board is widely seen as latest move to erase NSF’s independence

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 23/04/2026

astro hive mind - a student in my intro to astro for non-majors class asked about good astronomy documentaries they could watch. does anybody have any recommendations? 🔭 🌟#astronomy

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Britt Lundgren @brittlundgren.bsky.social · 18/04/2026

Just released: "Mission Aborted: How NASA Illegally Implemented the President's Budget Request Without Congressional Approval" - Minority Staff Report Prepared for Members of the Committee on Science, Space, and Technology, US House of Representatives democrats-science.house.gov/imo/media/do...

"Mission Aborted: How NASA Illegally Implemented the President's Budget Request Without Congressional Approval" - Minority Staff Report Prepared for Members of the Committee on Science, Space, and Technology, US House of Representatives - April 2026

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Alejandro Soto @soto.space · 17/04/2026

This administration really hates Goddard Space Flight Center. I hope we can save it. 🧪 #planetsci 49197025.hs-sites.com/assessing-th...

49197025.hs-sites.com

Assessing the Goddard Space Flight Center: Call for Experts

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 15/04/2026

a little delayed, but congratulations to MSU grad student Sydney Petz for receiving an NSF GRFP 🥳 astro.natsci.msu.edu/news-events/...

astro.natsci.msu.edu

First Year Graduate Student Sydney Petz Wins NSF GRFP

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CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 11/04/2026

LOL, trying to stay offline and do my work, and friends are sending me "LOOK AT THIS NEW PIC!" texts .... This one is worth it. First PoC and first woman to go around another world. Don't stop talking about this point. It's important. #ArtemisII

Astronauts Victor Glover and Christina Koch in their orange astronaut suits as they sit inside the side of a helicopter after it has landed

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Scott Horton @robertscotthorton.bsky.social · 04/04/2026

Anti-war demonstrations occurred all across Israel this evening. US media decided you really didn't need to know about them.

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 01/04/2026

oh no, my matzah ball timer is scheduled to go off 5 seconds before launch

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Robert "The Bobby Yaga" McNees @mcnees.bsky.social · 31/03/2026

Is this a new headline or did they just translate from the original German?

nytimes.com

Federal Judge Approves Trump Effort to Obtain List of Jews From Penn

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 27/03/2026

the number of times I've been mistaken for an undergrad on campus is now up to 5

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 26/03/2026

we were talking about solar flares and solar activity cycles in the intro astro for non-majors class today and somebody asked, "Do solar flares happen more frequently if a star spins faster?" ngl, I was shook by this intuition 💪

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András Gáspár @andrasgaspar.bsky.social · 19/03/2026

Looking at the AAS jobregister lately, it seemed to me that there are less positions available in all categories than in previous years. Wanting to quantify, I used the wayback machine to check on the number of postings in the January-March window and it is quite depressing.

A Table showing the number of positions posted at AAS job-registed for various categories.

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 17/03/2026

due to the persistence of the spot, Catriona extracted the first panchromatic spot spectrum 👀 it is surprisingly (!) consistent with models, except at optical wavelengths 🤔 which highlights the importance of deriving empirical spot spectra for robust interpretation of planetary atmospheres

wavelength versus spot contrast plot and residuals. this figure shows the spot contrast from ~0.5 to 5 microns for a persistent polar spot on an M dwarf star. The temperature of the spot is ~180K colder than the photosphere. there are disagreements between the model and the data at the shortest optical wavelengths

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💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social · 17/03/2026

really exciting work lead by Catriona Murray! TOI-3884 b is a planet on a polar orbit around an M dwarf. The transit has a persistent starspot crossing event. Using JWST, we measured the properties of the starspot and the Prot of the star 👀 arxiv.org/abs/2603.15414 🔭 #astronomy 🌟 #stellarastro

seven panel figure showing different JWST transits of TOI-3884 b with a persistent spot-crossing event. TOI-3884 b orbits the pole of a small M dwarf star. the shape of the spot-crossing event changes slightly between each transit. each subpanel has a graphical representation of what the spot looks like during each transit.

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David Roberts @volts.wtf · 22/02/2026

Some day we'll all regret this & we'll hold hearings & rend garments & pledge "never again" & we'll be just as full of shit as we were last time.

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boneyardz.bsky.social @boneyardz.bsky.social · 19/02/2026