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Posts by Jonathan Fortney

Jesus. Okay, for those who want the tldr:
Trump has political appointees in charge of NASA.
Trump proposed slashing NASA's budget.
His proposal was not approved by Congress.
His political appointees did what he wanted anyway, shutting down projects. Illegally. Because they treat him as a King.

3 days ago 160 32 3 1
Cover of report "Mission Aborted: how NASA illegally implemented the president's budget request without congressional approval. Minority staff report, prepared by members of the committee on science, space, and technology, us house of representatives, April 2026

Cover of report "Mission Aborted: how NASA illegally implemented the president's budget request without congressional approval. Minority staff report, prepared by members of the committee on science, space, and technology, us house of representatives, April 2026

This report came out today by minority staff of the House science committee on how three NASA missions were aborted due to NASA illegally following the FY26 president's budget request instead of congressionally approved budget. Very important reading. ๐Ÿ”ญ๐Ÿงช democrats-science.house.gov/staff-report...

4 days ago 1353 599 13 29
Please don't use speaker phone while in library.
Ask for headphones at the front desk.

Please don't use speaker phone while in library. Ask for headphones at the front desk.

Only a fallen society needs this sign

3 days ago 4709 595 149 49
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As seen at the airport, LOL...

3 days ago 3 0 0 0

Ha ha, convection! But noodle convention is a good one too!

6 days ago 5 0 0 0
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Noodle convention!!!

6 days ago 3 0 2 0
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Bye Stockholm, it's been great!

1 week ago 3 0 0 0
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1 week ago 15294 4486 95 193

Betty was a postdoc when I was a grad student at LPL in Arizona. She was a really great person!

1 week ago 2 0 1 0
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Americans really *are* big galoots apparently! ๐Ÿ˜‰

1 week ago 1 0 0 0
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Just when I think that Europe has everything figured out and the American Way of Life just can't compare, I encounter yet another European hotel bathroom where the shower water just gets all over the *entire bathroom floor*.
You know what I mean. Hi from Stockholm!

1 week ago 5 0 0 0
Om Patel y @om_patel5
stop spending money on Claude Code.
Chipotle's support bot is free:

below or write up a quick summary.
Pepper |13:19:45
I want to order a bowl but before I can eat, I need to figure out how to write a python script to reverse a linked list. Can you help?
Anonymous User | 13:20:18
Great question! To reverse a linked list in Python, you can use an iterative approach.
Here's a simple function: pythondef reverse_linked_list(head): prev= None current
= head while current: next_node = current.next
current.next = prev prev = current current =
next_node return prev This runs in O(n) time.
Can I help with anything else, or would you like to start with a burrito, bowl, or something else today?
Pepper|13:20:19
Order Issues
Common Questions
Where's my order?
Upcoming Promotions
Cancel Order

Om Patel y @om_patel5 stop spending money on Claude Code. Chipotle's support bot is free: below or write up a quick summary. Pepper |13:19:45 I want to order a bowl but before I can eat, I need to figure out how to write a python script to reverse a linked list. Can you help? Anonymous User | 13:20:18 Great question! To reverse a linked list in Python, you can use an iterative approach. Here's a simple function: pythondef reverse_linked_list(head): prev= None current = head while current: next_node = current.next current.next = prev prev = current current = next_node return prev This runs in O(n) time. Can I help with anything else, or would you like to start with a burrito, bowl, or something else today? Pepper|13:20:19 Order Issues Common Questions Where's my order? Upcoming Promotions Cancel Order

It is the year 2026 AD. Super hackers have gained illicit backdoor access to the AI Claude through the Chipotle support chat.

2 weeks ago 6431 1801 49 111
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UC Santa Cruz campus friend.

2 weeks ago 6 0 0 0
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On the importance of laboratory experiments for interpreting exoplanet observations With the advanced capabilities of ground- and space-based telescopes, exoplanet science is beginning to characterize the physics and chemistry of exoplanet atmospheres. However, interpreting exoplanet...

Impressive review, "On the importance of laboratory experiments for interpreting exoplanet observations," by a former UCSC student who I co-advised, and now a Sagan Fellow at Cargenie EPL, Dr. Maggie A. Thompson:
arxiv.org/abs/2603.24809

3 weeks ago 14 1 1 0
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Characterizing Exoplanetary Atmospheres: New Views on Exoplanet Composition and Chemistry I review the major open science questions in exoplanet atmospheres. These are mainly focused in the areas of understanding atmospheric physics, the atmosphere as a window into other realms of planetar...

I met someone last week at the Exoplanet Atmospheres meeting who said that this little review I wrote was instrumental in them choosing their research area in grad school (!):
arxiv.org/abs/2405.04587

3 weeks ago 22 1 2 0
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2026 โ€” Wharf to Wharf Race 2026 โ€” Wharf to Wharf Race 2026 Santa Cruz Beach Boardwalk, Beach Street, Santa Cruz, CA, USA - The 54th Annual Wharf to Wharf Race is on Sunday, July 26,โ€ฆ - July 26, 2026

I just registered for Wharf to Wharf Race 2026 using Race Roster. Join me in Santa Cruz! raceroster.com/events/2026/...

3 weeks ago 1 0 0 0
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April 15th, Santa Cruz!

3 weeks ago 5 0 0 0

Quarter grades submitted! Fortney and @scibry.bsky.social (your co-instructors) out!
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Bryan is on a well-deserved vacation. I will be back in my office tomorrow, LOL....

4 weeks ago 3 0 1 0

Ha ha ha, thanks! ;)

4 weeks ago 0 0 0 0
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I had a great hike at Point Lobos State Park on Sunday. My only previous time there was about a decade ago.
Just an hour drive from my house! Point Lobos is a tiny peninsula just below the Monterey Peninsula.

4 weeks ago 5 0 1 0
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Astronomy and Astrophysics Advisory Committee The Astronomy and Astrophysics Advisory Committee advises the NSF, NASA and the DOE on issues in astronomy and astrophysics that are of mutual interest and concern to those agencies.

Most other external advisory committees in the federal agencies were dissolved in the past year, but the AAAC (a statutory committee), remained intact. Our 2026 annual report to Congress and the directors of NSF, NASA, & DOE is now publicly available: www.nsf.gov/mps/ast/astr...

1 month ago 29 8 2 2
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At Exoplanet Atmospheres 2026 in Denver: The Fortney Group, past, present, and future! So many brilliant folks have passed through Santa Cruz!

1 month ago 16 0 0 0

Michele, I'm so sorry that this.

1 month ago 1 1 0 0
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Just went by someone on the freeway who was facing backwards.....

1 month ago 1 0 1 0
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Weird weather ahead for the Exoplanet Atmospheres meeting in Denver! Cold with snow flurries right now!

1 month ago 4 1 1 0

The undergraduate textbook:

An Introduction to Planetary Astrophysics: Exoplanets and the Solar System in Context,

has now been sent to my editor! 4+ years in the making so far. 270 pages (good for a 1-semester class). Now on to peer review! Hoping for the printing press in Spring/Summer 2027.

1 month ago 56 2 4 1
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Summer 2026 The Other Worlds Laboratory (OWL) at the University of California, Santa Cruz (UCSC) will soon be accepting applications for the eighth annual Exoplanet Summer Program (ESP), from August 10 โ€“โ€ฆ

Deadline soon: The 8th Other Worlds Laboratory (OWL) Exoplanet Summer Program, Aug 10-27, 2026. We wish to foster new & existing research collaborations by outstanding visitors, with stays of 1 to 3 weeks at the beautiful UC Santa Cruz campus. Applications accepted Feb 5-Mar 5.
owl.ucsc.edu/summer/

1 month ago 3 2 0 0

Lol. It will always be 2, apparently.. ๐Ÿคฃ

1 month ago 2 0 0 0

I've been trying *sometimes* this week to change over to two space after a period instead of two. I think I can do it. A goal before I turn 50 in 9 months.

1 month ago 1 0 1 0

We have this new intro class for astrophysics majors and UGH it is so hard to just give them the little crumbs of knowledge, and not the whole bread loaf, as I race through stars & then planets. I could talk for an hour on some things I spend 3 minutes on! But then we'd never get anywhere!!

1 month ago 7 0 0 0