Reposted by Kevin Hardegree-UllmanDr. Jessie Christiansen @aussiastronomer.bsky.social · 30/09/2026On point B, the NASA Exoplanet Archive typically serves ~10-20TB of data per month. In July it jumped to 70TB. In August it jumped to 600TB. So either our user base organically grew *30x* in two months (... unlikely), OR the bots have taken over already. 311447
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 29/09/2026This is the first time I've seen polycyclic aromatic hydrocarbons (PAHs) written out in a non-astronomy context. 🔭 #SpaceDust 🌌 1111
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 27/09/2026I've been thinking about these points a lot lately with the rise of AI/LLM use recently. 010
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 23/09/2026So happy for my friend Allison who got to name this asteroid and meet the asteroid's namesake! 🔭🪗 Now if #exoplanets could catch up with asteroids on the naming front... 0248
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 21/09/2026AI anything should always be user needs to opt-in by default. AI companies know if they had to ask for consent, abide by copyright laws, etc. their models would be significantly less effective. Things like GitHub enabling using your data by default make me want to be less open with things like code. 1114
Reposted by Kevin Hardegree-UllmanKevin Hardegree-Ullman @kevinkhu.bsky.social · 18/09/2026This is an ultra cool result from @bemiles.bsky.social and team! The brown dwarf community has wanted to get time-series spectra since Spitzer data revealed near ubiquitous broadband variability. TACs take notice, we should study the weather on more brown dwarfs! 🔭 0153
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 18/09/2026This is an ultra cool result from @bemiles.bsky.social and team! The brown dwarf community has wanted to get time-series spectra since Spitzer data revealed near ubiquitous broadband variability. TACs take notice, we should study the weather on more brown dwarfs! 🔭 0153
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 15/09/20264yo: "Daddy, can I have candy?" Me: "Fine." 4yo: "I want the one that looks like bacon." Me: 🤨 "You mean Twizzlers?" 4yo: "Yes, Twizzlers look like bacon." 🥓 030
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 10/09/2026In #exoplanet transit land, we often seek planets further out in their orbit. In direct imaging land, it's all about pushing closer in. This new study from @caltechipac.bsky.social VGSRF @jayke.io finds a new close-in candidate in the classic HR 8799 system! 0134
Reposted by Kevin Hardegree-UllmanKevin Hardegree-Ullman @kevinkhu.bsky.social · 07/09/2026My older sister Emily has been Colorado State University's sole astronomer for the past decade! She has shared our family's love for space with thousands of students and the Northern Colorado community through her classes and outreach. She really is the best teacher! 🔭 collegian.com/articles/sci...collegian.comPhysics professor leads CSU astronomy, shares love for the starsThe Rocky Mountain Collegian Science 0161
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 07/09/2026My older sister Emily has been Colorado State University's sole astronomer for the past decade! She has shared our family's love for space with thousands of students and the Northern Colorado community through her classes and outreach. She really is the best teacher! 🔭 collegian.com/articles/sci...collegian.comPhysics professor leads CSU astronomy, shares love for the starsThe Rocky Mountain Collegian Science 0161
Reposted by Kevin Hardegree-UllmanKevin Hardegree-Ullman @kevinkhu.bsky.social · 07/09/2026On this soggy summer's eve, just shy of spooky season, the spotted orb-weaver silently sits at the center of its sizable silky web. 🕷🕸 021
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 07/09/2026On this soggy summer's eve, just shy of spooky season, the spotted orb-weaver silently sits at the center of its sizable silky web. 🕷🕸 021
Reposted by Kevin Hardegree-UllmanNature Astronomy @natastron.nature.com · 31/08/2026Agentic research is oxymoronic ☄️dlvr.itAgentic research is oxymoronicNature Astronomy, Published online: 31 August 2026; doi:10.1038/s41550-026-02954-yThe use of agentic large language models obviates human interpretation of scientific results, and will lead to substantial distrust in the literature. 191
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 30/08/2026I am thrilled about the successful Nancy Grace Roman Telescope launch this morning! I am, however, disappointed at the significant and often uncredited mission gen-AI, including a disgraceful AI video+song about Roman shown by NASA yesterday. It tells me people don't value artists and their art. 060
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 21/08/2026It is Tucson hot today in Pasadena 102°F/39°C! At least Tucson usually gets monsoons this time of year. No rain in sight here. 🥵 110
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 21/08/2026Almost every time an #exoplanet news article comes out... 39424
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 21/08/2026In recent years, Astronomy on Tap events have grown, hopefully reaching audiences that wouldn't normally go to public talks. However, as an astronomer who doesn't drink and has exactly zero interest in doing outreach at bars, are there other creative outlets you've seen for non-standard outreach? 🔭 4122
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 21/08/2026PSA: If you've recently served on NASA or NSF panels (especially dual anonymous panels), please comply with the panel guidelines and DO NOT state the panel you served on in your CV! You can say you have served on NASA/NSF panel(s) and which year(s), but please don't be more specific than that. 🔭🧪 0121
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 19/08/2026Excited that a group is doing homogeneous characterization of a large sample of stars for radial velocity targets. A uniform stellar catalog is the first crucial step in exoplanet demographics! arxiv.org/abs/2608.17734arxiv.orgA Catalog of Homogeneously Derived Stellar Parameters for Spectroscopic Survey StarsUniformly derived stellar parameters are vital for exoplanet demographic studies because they directly influence the inferred planetary masses, radii, and bulk densities. This study presents a new hom... 0146
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 13/08/2026Apparently work never stops, even when on vacation. It took 3 of us 3 partial days to remove this side of the old roof and re-shingle. Luckily, this time we had a nail gun. ~10 years ago we replaced the other side and there were only 2 of us and we had to hammer every single nail. 130
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 05/08/2026Peahen timeline cleanse featuring 4 baby peachicks! 🦚 092
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 04/08/2026Just two weeks before school starts, I learn that the public school has a uniform* policy. I guess I'll have to join the PTA now to try to get that changed. 🫠 *not a uniform, but kids can only wear plain school color shirts and tan or blue pants/shorts 4 days a week. 010
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 04/08/2026Ugh. I only learn 2 weeks before school starts that the public elementary school has a uniform policy. 🫠 000
Reposted by Kevin Hardegree-UllmanKevin Hardegree-Ullman @kevinkhu.bsky.social · 30/07/2026In public, I generally want to minimize human interaction (e.g., self checkouts should be everywhere and allow more than 10 items). But if I actually need to use a phone the way they were intended, I absolutely expect a human to answer and not some bullshit AI assistant. 041
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 30/07/2026Did anyone of the Windows 9x generation have Microsoft Encarta and play MindMaze? Most of my 90s computer memories were of edutainment games like MindMaze, Spelling Jungle, Museum Madness, and Challenge of the Ancient Empires. 021
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 30/07/2026In public, I generally want to minimize human interaction (e.g., self checkouts should be everywhere and allow more than 10 items). But if I actually need to use a phone the way they were intended, I absolutely expect a human to answer and not some bullshit AI assistant. 041
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 29/07/2026It took all my self control to not burst out laughing the other day when somebody in the doctor's office waiting room kept asking someone on the phone if "fart-ciga" was the drug they needed to ask the doctor about. 111
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 26/07/2026Netflix has always been terrible at suggesting things to watch. Now we know why. Time to drop Netflix. 120
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 22/07/2026Michelle Kunimoto pointing out the importance of *automated* vetting of #exoplanet candidates. Manual inspection introduces uncharacherizable biases! #Sagan2026 071
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 21/07/2026All Roman transiting #exoplanet demographics will require a uniform stellar catalog. Check out Ashley Elliott's #Sagan2026 poster about the Roman GBTDS All-Star Catalog! 070
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 21/07/2026#Sagan2026, we have more responses to the *interactive* poster, don't forget to add your own thoughts! 131
Reposted by Kevin Hardegree-UllmanDr. Alison Duck @astroalison.bsky.social · 20/07/2026#Sagan2026 is off to a great start!! We have many amazing posters everyone should check out! And if you are curious about designing your own poster the video recording of my PROTO session “Communication Tips & Tricks for Posters and Pops” is live on YouTube! youtu.be/1V4c64xlr7M?...youtu.bePROTO: Tips and Tricks for Effective Communication with Scientific PostersYouTube video by Sagan Summer Workshop 052
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 20/07/2026If you're at #Sagan2026, come check out my *interactive* #exoplanet poster! The Near-Infrared Transit Explorer (NITE) is a survey mission concept designed to find Earth-sized planets in the habitable zones of M dwarfs! 1175
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 18/07/2026This is funny to come home to for a split second before you realize what they got into. #DogShaming 060
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 17/07/2026Sounds like we need a mission dedicated to finding more habitable zone rocky planets around nearby M dwarfs! At least one has an atmosphere, there's bound to be more (and hopefully some closer to Earth size/mass)! 020
Reposted by Kevin Hardegree-UllmanDr. Jake Turner 📡🧲🪐 @astrojaket.bsky.social · 16/07/2026⭐Another new paper! ⭐🔭 Proud Advisor Moment 🤗 Skylar, my PhD student, just had their first PhD paper accepted for publication! They did a fantastic job 😀 We update the orbit of the sub-Neptune pi Men c and find evidence of another planet 👀 Paper here for free: arxiv.org/abs/2607.12088arxiv.orgTESS Photometry and Radial Velocity Analysis of the sub-Neptune Exoplanet π Mensae c and the Wider π Mensae Planetary SystemExoplanet characterization relies on precise measurements of planetary orbital and physical parameters. This is particularly important for planetary dynamics and atmospheric evolution, as orbital para... 1223
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 10/07/2026We had three very nice (partial) nights on IRTF earlier this week, so of course our last night of this semester is not very good. It also kinda looks like a big twirly storm is brewing south of Hawaii. 🔭😶🌫️🌀 031
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 01/07/2026Having an inquisitive 4 year old with an expanding vocabulary is great. Dictionary dad mode unlocked. 040
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 29/06/2026I am very excited to see this Spitzer Y dwarf variability paper out! We are studying weather on the coldest brown dwarfs that are close cousins of Jupiter! #exometeorology #astronomy #exoplanets 🔭 arxiv.org/abs/2606.26411arxiv.orgA Spitzer Space Telescope Exploration Science Program to Search for Y Dwarf VariabilityWe present the results of a Spitzer Space Telescope Exploration Science Program to search for and characterize variability in Y dwarfs. We observed 14 Y dwarfs over a 24 hr period at [3.6] and [4.5] a... 1183
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 20/06/2026I got new glasses a month ago and they have been bothering me with extra reflections and glare. Today I realized the edge of the lenses are polished rather than frosted. I've never had that issue before with my glasses. Would not recommend. #Optics 060
Reposted by Kevin Hardegree-UllmanCaltech IPAC @caltechipac.bsky.social · 17/06/2026Are you ready to P A R T Y #AAS248? 🥳 💃 🔭 It’s IPAC’s 40th birthday this year & we’re celebrating with free food, drinks, and #IPAC40 prizes! Grab your “Passport to the Universe” and join us: ⌚️ 6:30-8:00pm 📍 Conference Center Room 106 (bldg opposite of expo hall & downstairs) 073
Reposted by Kevin Hardegree-UllmanDr. Jessie Christiansen @aussiastronomer.bsky.social · 17/06/2026ANOTHER JOB AD! #jobs #exoplanets #aas248 NExScI is advertising for a postdoc to come and join our fabulous team in sunny SoCal. The role involves both programmatic support and independent science research, so it's perfect for someone thinking about a career at NASA!!! aas.org/jobregister/...aas.orgPostdoctoral Scholar - NExScI | American Astronomical SocietyJob Summary Caltech is a world-renowned science and engineering institute that marshals some of the world's brightest minds and most innovative tools to address fundamental scientific questions. IPAC,... 11112
Reposted by Kevin Hardegree-UllmanDr. Jessie Christiansen @aussiastronomer.bsky.social · 16/06/2026Hey #AAS248 - don't forget, we have two job ads out at the moment: 1) NASA Exoplanet Archive Staff scientist 🪐✨💾 2) NExScI AI Software developer 🤖💻🌟 Come to the NExScI table in the @caltechipac.bsky.social booth to ask questions! Or find me! 0124
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 15/06/2026#AAS248 come to Session 119 #Exoplanet I - 2pm - Ballroom A to learn about COUNTESS! 119.01 COUNTESS: Exoplanet Demographics with the TESS Continuous Viewing Zones (me) 119.02 COUNTESS: A Pipeline to Extract the Potential of the TESS Mission for Exoplanet Demographics @brandonradzom.bsky.social 171
Reposted by Kevin Hardegree-UllmanDr. Jessie Christiansen @aussiastronomer.bsky.social · 15/06/2026📣 TESS IS A STATISTICS MISSION 📣 1498
Kevin Hardegree-Ullman @kevinkhu.bsky.social · 15/06/2026New paper led by Andrew Hotnisky (grad student, University of Florida)! COUNTESS I: A Uniformly Vetted Catalog of Known and New Transiting Exoplanets in the TESS Northern Continuous Viewing Zone arxiv.org/abs/2606.13789 #Exoplanets #AAS248 🔭arxiv.orgCOUNTESS I: A Uniformly Vetted Catalog of Known and New Transiting Exoplanets in the TESS Northern Continuous Viewing ZoneThe Transiting Exoplanet Survey Satellite (TESS) has transformed the study of nearby exoplanetary systems; however, its nominal observing strategy limits sensitivity to planets with orbital periods sh... 1134