iiinova — where your digital self keeps evolving

Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 26/09/2026

Great article to learn more about PRIMA: skyandtelescope.org/astronomy-ne...

Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 10/09/2026

One thing that sticks with me now that the SMEX proposals are all in - My daughter was born right after the initial gate review at JPL for EVE. Now, she's 2. Amongst our science team, we have had 3 more EVE babies. Really makes you realize how long it takes to develop one of these concepts! #PIDaily

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 08/09/2026

IT IS SUBMITTED!!! I still can't quite believe it 🤩🍷🚀 #PIDaily And, if you want to learn more about the fabulous EVE team and amazing science that we will do, check out our website: sites.krieger.jhu.edu/eve/

The cover page for the EVE - Early eVolution Explorer mission submitted to the NASA Small Explorer (SMEX) call in September 2026. A young planetary system is shown in three colors (blue, green, and red) representing the three simultaneous bands of EVE (NUV, visible, NIR).

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 30/08/2026

Go Roman Go! 🚀 So excited to get to work with this amazing data soon!

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 15/06/2026

James Rogers gave a fantastic talk about how young planets probe planet formation at #CoolStars23 and shouted out how EVE will dramatically change our understanding of this

James Rogers giving a talk about the Early eVolution Explorer (EVE) at the Cool Stars 23 meeting in Tokyo, Japan

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 10/06/2026

Now seems like a great moment to share this awesome new paper explaining how the Early eVolution Explorer (EVE) - a NASA SMEX mission concept - will transform our understanding of young planets (<50 Myr old): arxiv.org/pdf/2606.04283

arxiv.org

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Reposted by Dr./Prof. Meredith MacGregor

Hannah Richter @hannah-richter.bsky.social · 05/06/2026

The OMB's sweeping proposed changes to U.S. grant funding have racked up over 6,000 comments this week. 📃🛰️ In @skyandtelescope.bsky.social, astronomers weigh in on just how destructive these ideas would be for space science: skyandtelescope.org/astronomy-ne... #trump #omb #nasa

skyandtelescope.org

Proposed U.S. Grant Funding Rules Spark Worry, Backlash in Astronomy

The Office of Management and Budget envisions diminishing peer review and international collaborations.

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 28/05/2026

Another crazy week - PRIMA student collaboration site visit on Tuesday. EVE STMC review today. Red eye flight tonight. Innovation for Astrophysics workshop in DC tomorrow. Sleep? Not so much 🫠#PIDaily

static.klipy.com

Lorelai Gilmore: I Need Coffee in an IV

ALT: Lorelai Gilmore: I Need Coffee in an IV

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 13/05/2026

And this time it’s for real (and still very early) - Go PRIMA! 🌌🚀

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 12/05/2026

Hello JPL! It’s 7am and I’m wearing a suit. Let’s do this 💪

A photo of me holding a very large coffee at NASA JPL

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 28/04/2026

Got an RSV vaccine! ✅ Always a good feeling when I can protect myself from getting dangerously sick from something preventable 💉

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 25/04/2026

It’s Physics Fair day here at @jhuartssciences.bsky.social! If you’re local come check it out!

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 24/04/2026

Wow thanks everyone who voted for me...! I'm honored to get to have a chance to contribute to the AAS elected leadership aas.org/posts/news/2...

aas.org

Results of the 2026 AAS Election

The 2026 AAS Election closed on 20 April and the results are in!

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 23/04/2026

PRIMA Mock Site Visit ✅ EVE Baseline Commitment Review ✅ ALMA proposals submitted ✅ 6am flight back to BWI ✅ See you again in just a few weeks JPL! #PIDaily

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 20/04/2026

Last piece of space pottery for the Physics Fair next weekend! I made these bowls to look like the interstellar medium - the space in between stars. Love how the glaze pops in the sunlight 🌌

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 17/04/2026

First attempt at sgraffito - I really like how the combo of black underglaze with the white clay (Standard 182) came out looking like chalk on a chalkboard #sciart #pottery

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 14/04/2026

Finished the full set of Solar System trinket dishes I shared earlier! #sciart

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 11/04/2026

In honor of the successful landing of Artemis II, here’s a moon bowl! I made the bowl and then cratered it to look like the surface of the moon #sciart

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 03/04/2026

I started making ceramics last summer and it has become a big part of my life that I haven’t shared here yet. For our annual department outreach event, I agreed to make space inspired pottery for prizes and giveaways. I’ve started getting final pieces out of the kiln and it’s so fun I have to share!

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 02/04/2026

We’ve never gone to the Moon since I’ve been alive - until now. There’s A LOT awful going on, but it was still so amazing to watch the Artemis II launch. What amazing things us humans are capable of 🚀🌔

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 06/03/2026

Always a fun day when your research ends up on APOD! 🤩 apod.nasa.gov/apod/astropi... And, check out the original paper, too: iopscience.iop.org/article/10.3...

apod.nasa.gov

Astronomy Picture of the Day

A different astronomy and space science related image is featured each day, along with a brief explanation.

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 08/01/2026

So excited to see our EVE science highlighted in Evgenya Shkolnik’s fantastic plenary at #AAS247! I’m thrilled to be proposing this mission to NASA

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 07/01/2026

It’s far-infrared day at #AAS247! Come learn about how cool this part of the spectrum is and why it is critical for a multi-wavelength understanding of the universe!

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 06/01/2026

Our session for the AAS Task Force on Graduate Admissions is this morning at 10am in Room 226 B #AAS247

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 05/01/2026

Come join us in the session discussing our report on the landscape of undergraduate degrees in astronomy and astrophysics at #AAS247 in room 226B!

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 05/01/2026

What a great birthday present today - SMEX is back on! Let’s go EVE!

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Reposted by Dr./Prof. Meredith MacGregor

Ward Howard @wardhoward.bsky.social · 04/12/2025

1/ It's press day!🔭🧪 We apply a grid of time-dependent physical models to explain TRAPPIST-1 flares, predicting the X-ray & UV flux driving escape and photochemistry in planetary atmospheres, and correcting flare contamination in transit spectroscopy down to ~60 ppm: www.colorado.edu/today/2025/1...

colorado.edu

New research on flares from a hot-tempered star could inform search for habitable planets

A new study takes a close look at TRAPPIST-1, a little star roughly 40 light-years from our sun that hosts seven Earth-sized planets.

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 21/11/2025

Today is the ExoJamboree at @jhuartssciences.bsky.social and @stsci.edu - How cool is that we are such a powerhouse of exoplanet research here that we can have an awesome conference with just local people?!?!

Schedule from the 2025 ExoJamboree at JHU and STScI

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 21/11/2025

Another wonderful article about our RZ Psc work!

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 14/11/2025

This! Here's a slide pulled from my class lecture notes this semester. Comets have two clear tails - one from dust and one from ions. They point in different directions because one feels the solar wind while the other feels radiation pressure.

A slide from a lecture showing the difference between the dust and ion tails of comets, which are affected by radiation pressure and the solar wind, respectively

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 02/11/2025

Flying to Rochester today to give the colloquium. Can confirm that most of security at BWI is shut down and people aren’t happy about it 🫠

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 14/10/2025

So excited that our paper is finally out! We analyzed archival TESS observations of RZ Psc and detected 24 transiting exocomets. And, Adalyn is an amazing undergrad applying for grad school this year!

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 11/09/2025

Calling the Astronomy hive mind! Who is your favorite deceased astronomer that deserves to have something named after them posthumously? And why?

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 04/09/2025

Super excited that these results are finally out! This is the highest resolution ALMA image of Fomalhaut ever, and we can learn new things about the structure of the disk and the planet that is likely shaping it. Press release here: public.nrao.edu/news/neighbo...

public.nrao.edu

Neighboring Star’s Warped Ring Shaped by Evolving Planets - National Radio Astronomy Observatory

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have made the highest resolution image to date, revealing new insights...

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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 25/08/2025

It's the first day of classes and I spent the weekend in the hospital with a sick little one who needed emergency surgery... Let's do this! (Also, please send coffee!)