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Yoav Rotman

@yoavrotman.bsky.social
576 followers 350 following 83 posts

PhD Candidate 🪐 @ ASU || UMD Astro '22 🐢 || studying exoplanet atmospheres and a big fan of TRAPPIST-1e || sometimes I play the trombone || he/him/הוא || find me on Twitter @Yoav_Rotman

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Yoav Rotman @yoavrotman.bsky.social · 01/10/2026
Realized during a discussion with my group today that I really do miss the JWST Cycle 2-3 era shitposting that used to happen in the last ~48 hours pre-deadline Can we bring back the whimsy please
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Sarah Hörst @planetdr.bsky.social · 22/09/2026
Here! docs.google.com/spreadsheets...
docs.google.com
Planetary Science MS/PhD Positions Starting Fall 2027
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Yoav Rotman @yoavrotman.bsky.social · 20/09/2026
Every year I wake up and go “oh boy I sure hope this season will be fun” and then I am strapped into The Device by the Baltimore Ravens Organization
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Yoav Rotman @yoavrotman.bsky.social · 06/04/2026
The video of this did almost make me cry in the office btw
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Mariko Bennett @nachoriko.bsky.social · 24/03/2026
I defended my PhD 10 years ago today. That was the least remarkable thing that happened that day. Sharing something I wrote about it last year. Since then "the horrors persist but so do we." And with dignity.
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Yoav Rotman @yoavrotman.bsky.social · 04/03/2026
Doing the important work
Three trays of baked hamentashenA woman folding hamentashen
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Yoav Rotman @yoavrotman.bsky.social · 04/03/2026
Doing the important work
Three trays of baked hamentashenA woman folding hamentashen
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Katie Mack @astrokatie.com · 12/02/2026
You can't... repeal... a scientific finding. At that point it's just called lying about it.
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Karl Bode @karlbode.com · 11/02/2026
Likely-historic photo by NBC News of all the Epstein victims asked to raise their hands if they've not yet been asked to meet with the DOJ as Bondi testifies in foreground
photo of Pam Bondi testifying in the foreground as a group of 7 women and 1 men raise their hands
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Yoav Rotman @yoavrotman.bsky.social · 11/02/2026
My new exoplanet figure, showing the relationship between planet radius and planet diameter, may be the most precise population-level trend yet discovered
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Dr. Jessie Christiansen @aussiastronomer.bsky.social · 05/11/2025
Hey, astronomers. Can you imagine astronomy research without ADS?!?!? No? So, have you filled out the ADS survey yet? Help archives help you! (Help archives keep funding!) docs.google.com/forms/d/e/1F...
docs.google.com
Astrophysics Data System (ADS) User Feedback Survey
Thank you for taking the time to provide feedback on the Astrophysics Data System (ADS) digital library. Your insights will help us improve the platform and better serve the scientific community. All ...
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Yoav Rotman @yoavrotman.bsky.social · 16/10/2025
Ow. #JWSTCycle5
media.tenor.com
a r2d2 robot is laying in the dirt near a rock
ALT: a r2d2 robot is laying in the dirt near a rock
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András Gáspár @andrasgaspar.bsky.social · 14/10/2025
The JWST Cycle 5 "Procrastination Monitor", i.e. Molly's proposal counter submission form, is up an running. Please fill it out if you have data to add to it. And do share! #JWSTCycle5 docs.google.com/forms/d/e/1F...
docs.google.com
JWST Cycle 5 Proposal Procrastination Monitor
An anonymous way to monitor JWST proposal submission times In the email from proposal-submission@stsci, the subject line will be like, "JWST Phase I Proposal 3434 submission 4 received". Here, 3434 =...
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Linn Boldt-Christmas @nplinnspace.bsky.social · 27/08/2025
Do you love WASP-107 b? Do you love making use of *both* ground VLT + space JWST obs to detect molecules in a "warm" (Teq<800K) #exoplanet in transmission, even in a crazy confusing cloudy atmosphere?! 🚨 It's PAPER* DAY! Which means #scicomm thread! 🧵⬇️🔭🪐🧪 *pre-print! arxiv.org/abs/2508.18964
arxiv.org
VLT/CRIRES+ observations of warm Neptune WASP-107 b: Molecular detections and challenges in ground-based transmission spectroscopy of cooler and cloudy exoplanets
Atmospheres of transiting exoplanets can be studied spectroscopically using space-based or ground-based observations. Each has its own strengths and weaknesses, so there are benefits to both approache...
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Dr. Lucky Tran @luckytran.com · 21/07/2025
NEW: Hundreds of NASA employees have filed a letter of formal dissent. "We are compelled to speak up when our leadership prioritizes political momentum over human safety, scientific advancement, and efficient use of public resources. The consequences for the agency and the country alike are dire."
The Voyager Declaration
Dear Interim Administrator Duffy,

In light of your recent appointment as Interim NASA Administrator, we bring to your attention recent policies that have or threaten to waste public resources, compromise human safety, weaken national security, and undermine the core NASA mission. We, the signatories of this letter, dissent from these policies, and raise these concerns because we believe strongly in the importance of NASA's mission, which we are dedicated to uphold.

Major programmatic shifts at NASA must be implemented strategically so that risks are managed carefully. Instead, the last six months have seen rapid and wasteful changes which have undermined our mission and caused catastrophic impacts on NASA's workforce. We are compelled to speak up when our leadership prioritizes political momentum over human safety, scientific advancement, and efficient use of public resources. These cuts are arbitrary and have been enacted in defiance of congressional appropriations law The consequences for the agency and the country alike are dire.
Our Shared Commitment to Dissentin� Opinions

We share a commitment to dissenting views in accordance with NASA Policy Directive 1000.0C,

NASA supports full and open discussion of issues of any nature (e.g., programmatic, institutional), including alternative and divergent views. Diverse views are to be fostered and respected in an environment of integrity and trust with no suppression or retribution. (NPD 1000.0C, Section 3.5.5)
Employees across the agency have raised concerns about recent actions to NASA leadership, yet we remain pressured to implement harmful measures. We choose to write to you directly because: (I) as Interim Administrator, you are the final step in the chain of Technical Authority, and (2) the issues we raise are agency-wide, rather than project-specific.
As defined in NASA Procedural Requirement 7120 5F, Formal Dissent is "a substantive disagreement with a decision or action that an indiv…•	We dissent to changes to NASA's Technical Authority capacities that are driven by anything other than safety and mission assurance. The culture of organizational silence promoted at NASA over the last six months already represents a dangerous tum away from the lessons learned following the Columbia disaster. Changes to the system of Technical Authority, as suggested would be made in the June 25th NASA Town Hall, should be made only in the interests of improving safety, not in anticipation of future budget cuts.
•	We dissent to the closing out of missions for which Congress has appropriated funding because it represents a permanent loss of capability to the United States both in space and on Eatlh. Once operational spacecraft are decommissioned, they cannot be turned back on. Additionally, cancelling missions in development threatens to end the next generation of crucial
observations.
•	We dissent to implementing indiscriminate cuts to NASA science and aeronautics research because this will leave the American people without the unique public good that NASA provides. Basic research in space science, aeronautics, and the stewardship of the Earth are inherently governmental functions that cannot and will not be taken up by the private sector. Furthermore, NASA has a nearly threefold return on investment in economic activity, and supports national security by ensuring the United States maintains its lead in science and technology.
•	We dissent to NASA's non-strategic staffing reductions because they will jeopardize NASA's core mission. Thousands of NASA civil servant employees have already been terminated, resigned or retired early, taking with them highly specialized, irreplaceable knowledge crucial to carrying out NASA's mission.
•	We dissent to canceling NASA participation in international missions because in doing so, NASA is abandoning America's allies. To date, 55 nations have signed on to the Artemis Accords, and withdrawing support from missions with our long-s…We stand in solidarity with our colleagues at the NIH and EPA who have released similar statements concerning the administration's actions at their respective agencies.

We dedicate this letter to Gus Grissom, Ed White, Roger Chaffee, Dick Scobee, Michael J. Smith, Ronald McNair, Ellison Onizuka, Judith Resnik, Gregory Jarvis, Christa McAuliffe, Rick Husband, Willie McCool, Michael Anderson, Kalpana Chawla, David Brown, Laurel Clark, and Ilan Ramon. Their legacies underpin every conversation about our shared commitment to safety and dissenting opinions at NASA.
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Sarah Kendrew @sarahkendrew.bsky.social · 09/07/2025
Interpretation of #JWST exoplanet transmission spectroscopy hinges on having accurate error bars on the spectra. Correlated noise will come to bite you if you don’t model it appropriately. So this is great and important work, thanks @yoavrotman.bsky.social & al 👇🔭🧪
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Luis Welbanks @luiswel.bsky.social · 09/07/2025
We need to understand the limits of our models and our data for reliable interpretations of exoplanetary spectra. First paper by my first PhD student! Happy advisor moment. Congrats @yoavrotman.bsky.social Check out his paper on the Arxiv and his thread below #exoplanets 🔭
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Yoav Rotman @yoavrotman.bsky.social · 08/07/2025
Speaking of which, I'll be presenting this work later today at @exoclimes.bsky.social. Check out my talk at 5:00 if you're interested in learning more! #ExoclimesVII
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Yoav Rotman @yoavrotman.bsky.social · 08/07/2025
Paper day! A 🧵 JWST transmission spectra are showing more and more signs of new exciting physics, which is awesome! But if our models don't take that into account, it can propagate as correlated noise and bias our inferences. What do we do? arxiv.org/abs/2503.21702 (1/n)
A meme saying "Correlated noise? In my JWST data? It's more likely than you think. FREE GP CHECK!"
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Yoav Rotman @yoavrotman.bsky.social · 27/06/2025
Astro folks, does anyone have any good tips for making conference talk slides? Looking for stuff beyond the usual "don't overclutter" and "spread the information over multiple slides" - any tips about how to make an aesthetically pleasing, easy to follow deck?
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The Planetary Society @planetarysociety.bsky.social · 10/06/2025
Need data to explain the disastrous proposed cuts to NASA? Here are seven charts that lay out why The White House’s FY2026 budget proposal poses a historic threat to NASA. www.planetary.org/articles/nas...
planetary.org
NASA's disastrous 2026 budget proposal in seven charts
The White House has put forward a radical, wasteful proposal for NASA. We have the data to prove it.
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Astrobites @astrobites.bsky.social · 03/06/2025
From Skylar Grayson @skylargrayson.bsky.social : This post summarizes the proposed major cuts to NASA and the NSF and the impacts they would have, and provides resources to help fight back against this wasteful and unnecessary attack on science. 🔭✨☄️ astrobites.org/2025/06/02/b...
astrobites.org
NSF and NASA Budget Requests Pose an Unprecedented Threat to Astronomy
The president's budget requests for NASA and the NSF were released last week. This post summarizes the major cuts and the impacts they would have, and provides resources to help fight back against thi...
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Laura Lopez @ohdearz.bsky.social · 31/05/2025
Here is the updated version of the FY26 president's proposed #NASA astrophysics budget for current+future missions. The technical supplement document does have significantly reduced funds for NuSTAR, IXPE, TES (+HST, JWST, Roman), so I removed those Xs, but these are at/below bare minimum levels. 🔭
Astrophysics fleet with Xs over missions receiving no support in the FY26 president's proposed NASA budget, including many current and future facilities: Chandra, XMM-Newton, Swift, Fermi, NICER, Euclid, XRISM, COSI, Ultrsat, ARIEL, UVEX, LISA, and astrophysical probes.
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Yoav Rotman @yoavrotman.bsky.social · 24/05/2025
Have we as a society figured out definitively if there's supposed to be a space before the letter in an exoplanet name? "TRAPPIST-1 e" looks wrong but so does "WASP-96b"
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Matt Nixon @nixonmatthew.bsky.social · 02/05/2025
Just shared a new paper on the arXiv, led my @luiswel.bsky.social and me, on the challenges associated with detecting gases in exoplanet atmospheres. As the field pushes towards new and exciting opportunities, we thought it was time to talk about what it really means to “detect” something!
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Chris Lintott @chrislintott.bsky.social · 01/05/2025
A new, thorough reanalysis of the data that led to claims of biosignatures on K2-18b from @luiswel.bsky.social & friends - a nicely written lesson on why this stuff is hard. They find no significant evidence for DMS, the gas the Cambridge team claimed to have found. arxiv.org/abs/2504.21788
arxiv.org
The Challenges of Detecting Gases in Exoplanet Atmospheres
Claims of detections of gases in exoplanet atmospheres often rely on comparisons between models including and excluding specific chemical species. However, the space of molecular combinations availabl...
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Alexandra Witze @alexwitze.bsky.social · 17/04/2025
"Not strong evidence" - @spschmidt.bsky.social "Almost certainly not life" - @tessafisher.bsky.social In which I round up some Community Response on the exoplanet biosignature paper from last night 🧪 www.nature.com/articles/d41...
nature.com
Signs of life on a distant planet? Not so fast, say these astronomers
Bold claims of ‘biosignature’ molecules trigger an outpouring of scepticism.
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Brett Morris @brettmorr.is · 19/03/2025
The atomic spectral lines in this app come from the NIST atomic spectroscopy group, which has provided the world with spectroscopic measurements for 120 years. Today we got word that the federal government is laying off the entire group. 🔭🧪
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Aditya Sengupta @adiastra.bsky.social · 13/03/2025
new blog post! I talk about the potential risks to science posed by "vibes-based" LLM programming, and how we could mitigate them aditya-sengupta.github.io/vibescience/
aditya-sengupta.github.io
The Impending Rise of Vibe Science
LLM-based programming is tempting for science because people mostly want to spend their time thinking about the problem they’re interested in, rather than writing code. This isn’t helped by the narrat...
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Yoav Rotman @yoavrotman.bsky.social · 11/03/2025
Inbox of pain and agony #JWSTCycle4
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Yaron Rotman @mash-and-coffee.bsky.social · 04/03/2025
קפה #1281 Coffee תראה @yoavrotman.bsky.social ! עשיתי לב לכבודך! אני מבטיח לשפר את כישורי ציור הלבבות שלי ב-25 השנים הבאות 😍
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Yoav Rotman @yoavrotman.bsky.social · 20/02/2025
Paper editing is uh..... not going well
An overleaf comment box that shows two comments from me. The first says "I still hate this sentence." The second one is dated one minute later and says "I still haven't figured out how to make it better."
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The Planetary Society @planetarysociety.bsky.social · 18/02/2025
The Planetary Society strongly opposes the sudden, indiscriminate dismissal of more than 1,000 scientists, engineers, and explorers at NASA — the largest involuntary workforce reduction since the end of the Apollo program. Read more on our stance. ⬇️
planetary.org
The Planetary Society Strongly Opposes Mass Layoffs of Probationary…
Sudden, indiscriminate layoffs at NASA do not serve the national interests in space leadership.
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The Planetary Society @planetarysociety.bsky.social · 18/02/2025
Sign our letter to urge Congress, President Donald Trump, and key officials to reverse this arbitrary decision. These letters have proven effective, helping us to save countless space missions, now lets save jobs. It takes less than 30 seconds to sign. Please share! www.planetary.org/advocacy-act...
planetary.org
Advocacy Action Center
The Planetary Society is organizing a new space constituency that is educated, empowered, and loud.
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Yoav Rotman @yoavrotman.bsky.social · 12/02/2025
Gotta respect the one student who decided to turn in a homework answer for density in units of grams per cubic kiloparsec (...and yes, the answer was correct)
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Darby Saxbe @darbysaxbe.bsky.social · 04/02/2025
🚨BREAKING. From a program officer at the National Science Foundation, a list of keywords that can cause a grant to be pulled. I will be sharing screenshots of these keywords along with a decision tree. Please share widely. This is a crisis for academic freedom & science.
list of banned keywords
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Katie Mack @astrokatie.com · 28/01/2025
I think some people hear “grants” and think that without them, scientists and government workers just have less stuff to play with at work. But grants fund salaries for students, academics, researchers, and people who work in all areas of public service. “Pausing” grants means people don’t eat.
washingtonpost.com
White House pauses all federal grants, sparking confusion
The Trump administration has put a hold on all federal financial grants and loans, affecting tens of billions of dollars in payments.
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Dr. Sarah Parcak @indyfromspace.bsky.social · 28/01/2025
Every professor/academic on here needs to call their elected officials tomorrow re OBM federal funding pause. Be polite and professional and express your concern. I will be doing this.
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Mike Boylan-Kolchin @mbkplus.bsky.social · 24/01/2025
I would guess that 75% of the graduate students in my department are funded entirely by federal grants. Virtually all of the postdoctoral researchers, too. If a funding pause were to come, it would be catastrophic for them (and there is no clear path to finding alternate employment quickly)
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Josh Busby @busbyj2.bsky.social · 28/01/2025
Call your Democratic Senators tomorrow and tell them to put down their work on nominations until OMB withdraws its power grab on appropriations. No more nomines go through. None.
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Mark Joseph Stern @mjsdc.bsky.social · 28/01/2025
Trump is attempting to unilaterally freeze trillions of dollars in federal spending that’s been duly appropriated by Congress. This is completely insane and illegal. He’s seizing unlawful control over the constitutional spending power? Five alarm fire www.washingtonpost.com/business/202...
washingtonpost.com
White House pauses all federal grants, sparking confusion
The Trump administration has put a hold on all federal financial grants and loans, affecting tens of billions of dollars in payments.
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Michael Wong @miquai.bsky.social · 24/01/2025
Calling all undergrads! Just one week left to apply for Carnegie’s 2025 summer internship and work with us on all kinds of interdisciplinary projects in Earth & planetary science! Campus won’t look quite like this in June, but it’ll still be a magical experience ✨ carnegiescience.edu/about/workin...
The Carnegie Science sign on a snowy campus
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Michael Wong @miquai.bsky.social · 24/01/2025
Today I was told to take out a line about being a mentor to students from diverse backgrounds and historically underrepresented groups from my biosketch for a proposal, because it might damage our chances of getting federal funding. How has it come to this? I feel absolutely sick.
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Dr. Skylar Grayson @skylargrayson.bsky.social · 23/01/2025
This is disgusting. It’s happening across government agencies, but there’s something viscerally horrible about seeing such hateful language underneath the NASA logo.
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Katie Mack @astrokatie.com · 23/01/2025
The price of eggs in the US is spiking, mostly due to #H5N1 bird flu. Solving the problem requires urgent, important communications from the CDC & FDA* and rapid development of research by the NIH** * Currently paused by Executive Order ** Grant reviews now all canceled www.kcur.org/news/2025-01...
kcur.org
Egg prices are soaring again. Here’s why and what to expect
Bird flu has killed millions of hens in recent weeks, shrinking the supply of eggs and hiking up prices at grocery stores.
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Science Magazine @science.org · 22/01/2025
“The impact of the collective executive orders and directives appears devastating.” scim.ag/40ureTO
scim.ag
Trump hits NIH with ‘devastating’ freezes on meetings, travel, communications, and hiring
Researchers facing
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Tal Lavin @swordsjew.bsky.social · 23/01/2025
use a burner email for this
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Jacquelyn Gill @jacquelyngill.bsky.social · 23/01/2025
NIH and other federal health agencies have been instructed to cease external communications indefinitely. This means that grant programs—the money that funds life-saving university and hospital research—are currently in limbo. This includes VA research on veterans’ health.
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Garrett Merz @garrettmerz.bsky.social · 23/01/2025
Oh no, what if this tip line received so many bogus reports from the general public that it became totally impossible to use???
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