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Jonathan Fortney Profile
Jonathan Fortney

@jjfplanet

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@ucsc Astro Professor & Department Chair, Other Worlds Laboratory (OWL) Director. Planetary Astrophysics: Exoplanets & Solar System. Father, Husband, Minnesotan

Santa Cruz, CA
Joined January 2012
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@jjfplanet
Jonathan Fortney
3 years
For all the new grad students and postdocs out there: "Ideas are like rabbits. You get a couple and learn how to handle them, and pretty soon you have a dozen." --John Steinbeck
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@jjfplanet
Jonathan Fortney
22 days
Some of the books that have come in handy while working on my textbook. These were ALL at home, time to bring them back to my office!
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@Nature
nature
25 days
The US Supreme Court has derailed researchers’ efforts to reinstate almost $2 billion in grants issued by the NIH. The court’s decision represents a remarkable reversal, allowing the Trump team to proceed with its science cuts. https://t.co/cDowytNLJP
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nature.com
Nature - The decision will hinder lawsuits against grant terminations, legal specialists say.
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@BillKristol
Bill Kristol
25 days
Bolton’s home raided, Gen. Kruse fired, Epstein coverup proceeds, seizure of 10% of Intel another step to state capitalism. One day in the somewhat chaotic but purposeful march towards…despotism. And does anyone think they’re doing all this so they can hand over power in 2028?
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@JDLothringer
Josh Lothringer
1 month
And a big shout-out to lead-author Yayaati for seeing this project through from proposal to paper and showing that HST still has lots to say about exoplanet atmospheres in the JWST-era! Check out the paper here: https://t.co/AhatGS0v5b. Accepted for publication in AJ!
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arxiv.org
Ultra hot Jupiters (UHJs) present a promising pathway for drawing a link between a planet's composition and formation history. They retain both refractory and volatiles species in gas phase in...
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@JDLothringer
Josh Lothringer
1 month
I'm very excited to be able to share Yayaati Chachan's Hubble/WFC3 transit spectrum of ultra-hot Jupiter KELT-20b. Using *all* of WFC3's grisms, we get a 0.2-1.7 micron spectrum showing absorption by metals at in the UV and only weak absorption by water in the IR.
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@jjfplanet
Jonathan Fortney
1 month
Overwhelmed with excitement on the first day of 12th and 10th grades!
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@jjfplanet
Jonathan Fortney
1 month
From a friend: Americans will frankly have to put our hopes for a healthy and safe future in the hands of other nations’ scientists. One would only take these steps if they wished to destroy our collective prosperity. https://t.co/wESkM4ovf7
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arstechnica.com
All new funding on hold until Trump administration can cancel any previously funded grants.
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Jonathan Fortney
1 month
Janet Napolitano is on my flight. Former UC President, Obama cabinet member, and Arizona governor (from when I lived there). I recognized her instantly -- crazy.
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en.m.wikipedia.org
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@jjfplanet
Jonathan Fortney
2 months
What is even happening?
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@jjfplanet
Jonathan Fortney
2 months
Dr. Artem Aguichine, having his French citizenship questioned by Dr. Nour Skaf, after slathering his croissant in peanut butter.
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@jjfplanet
Jonathan Fortney
2 months
Some additional visitors for the Other Worlds Laboratory, exoplanet summer program at UC Santa Cruz. This is our 7th year of creating and fostering collaborations in exoplanet science at UCSC.
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@jjfplanet
Jonathan Fortney
2 months
The mascot is out and about on this misty morning!
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@jjfplanet
Jonathan Fortney
2 months
I said "no" to a thing!
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@JDLothringer
Josh Lothringer
2 months
Abstracts close this Friday for the Fall 2025 STScI Science Workshop on Atmospheric Escape and Replenishment. We'd love to see you in Baltimore in November! Check it out and let me know if you've any questions. https://t.co/t5VryyDq6I
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stsci.edu
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@jjfplanet
Jonathan Fortney
2 months
Day 1 underway at the Other Worlds Laboratory (OWL) 🦉 Exoplanet Summer Program at UC Santa Cruz. Building and fostering collaborations in exoplanet science!
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@jjfplanet
Jonathan Fortney
2 months
Am I the last to know about this multicolor watermelon thing?
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@jjfplanet
Jonathan Fortney
2 months
The Red Menace had laid low for nearly a year before returning this morning to the Firecracker 5K race! 21:16 time, a 6:51/mile, his 2nd best effort ever! The only disappointment was that the classic pancake breakfast has now been converted into breakfast burrito distribution.
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@jjfplanet
Jonathan Fortney
3 months
A big Rubin Observatory party at @ucsc today. Important leadership from our Physics department for this transformational observatory.
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@NSF
U.S. National Science Foundation
3 months
Today, NSF announced an add’l 500 NSF Graduate Research Fellowship Program awardees for the 2025-2026 cohort, bringing the total to approx 1,500. #NSFGRFP supports grad students as they pursue their dreams, build STEM skills, & become the next generation of innovators & leaders.
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