John F Wu @jwuphysics.bsky.social · 09/10/2026Update: Baltimore confirmed the best. Neighbor Ms. Ruth is the best. 040
John F Wu @jwuphysics.bsky.social · 09/10/2026Reason number 829 that Baltimore is the best: a neighborhood grandma randomly knocks on your door and hands you a giant lemon pound cake 1130
John F Wu @jwuphysics.bsky.social · 08/10/2026why does my toddler remind me of Susie from Calvin and Hobbes 060
John F Wu @jwuphysics.bsky.social · 02/10/2026By popular demand, I wrote a blog post explaining the web app that I built last week: the Galaxy Manifold. jwuphysics.github.io/blog/2026-10... 1152
John F Wu @jwuphysics.bsky.social · 25/09/2026By popular demand: you can now filter out galaxies colored by missing values! In this case, I'm showing sSFR vs Mstar, colored [and filtered] by HI/Mstar. galaxy-manifold.github.io#p=ssfr&c=log... (Also, this is what it looks like on a desktop, not mobile.) 2162
John F Wu @jwuphysics.bsky.social · 25/09/2026Built a thing that #aatrosky may enjoy: galaxy-manifold.github.io 2386
John F Wu @jwuphysics.bsky.social · 28/07/2026Having grown up in Sulphur, Louisiana, I can verify that this wikipedia picture of "downtown" is a representative view of Sulphur 030
John F Wu @jwuphysics.bsky.social · 17/07/2026Gonna J-lens the crap out of that first and only token 030
John F Wu @jwuphysics.bsky.social · 15/07/2026Okay fine now it's kind of uncomfortable in Baltimore (46C heat index) 010
John F Wu @jwuphysics.bsky.social · 11/07/2026I don't think I've ever seen a soccer throw-in bat flip 0172
John F Wu @jwuphysics.bsky.social · 10/07/2026Winds are starting to pick up now and the eye is showing up on radar. Bavi is a ridiculously large storm! 100
John F Wu @jwuphysics.bsky.social · 08/07/2026I need to find @depthsofwikipedia.bsky.social while holding this in my hand (just eaten in Ningxia night market) 070
John F Wu @jwuphysics.bsky.social · 29/06/2026Views of National Taiwan University and the city of Taipei, from my office building in the Academia Sinica Institute of Astronomy and Astrophysics (ASIAA). 281
John F Wu @jwuphysics.bsky.social · 27/06/2026So excited to give a colloquium in Taiwan... hm let's see what to pack based on the weather 291
John F Wu @jwuphysics.bsky.social · 17/06/2026Pinging @depthsofwikipedia.bsky.social Mostly just because of "Liking for gravy" with an arrow, annotated 20th C., pointing to the UK, and "A novelty Pizza topping" for some reason off the coast of Oman? 120
John F Wu @jwuphysics.bsky.social · 02/06/2026This is the worst looking photo they could snap of Mamdani 😭 151
John F Wu @jwuphysics.bsky.social · 29/05/2026About as beautiful weather as it gets... 25C at Camden Yards 060
John F Wu @jwuphysics.bsky.social · 28/05/2026Gemini 3.5 flash is a bit better, although I'm not sure if that's simply scaffolding 020
John F Wu @jwuphysics.bsky.social · 03/05/2026When life gives you 韭菜, obviously you have to make 韭菜肉包 190
John F Wu @jwuphysics.bsky.social · 16/04/2026So cool that Annual Reviews sent me a physical volume of ARA&A 63! A great memento from when I served as a guest reviewer. 170
John F Wu @jwuphysics.bsky.social · 11/04/2026My 20 month old son looking like the old Indian man meme 260
John F Wu @jwuphysics.bsky.social · 08/04/2026The two main findings about AI in for learning: AI impairs performance and it reduces persistence. 040
John F Wu @jwuphysics.bsky.social · 01/04/2026FWIW I didn't read this paper, just skimmed, so I don't know how much of the findings hinge on the *photometric* catalogs. The DESI targeting catalogs are much more conservative and don't seem to be as susceptible to shreds. The photometric catalogs on the other hand... 010
John F Wu @jwuphysics.bsky.social · 30/03/2026The joy of being a STScI astronomer 🤩 Spotted at BWI airport 183
John F Wu @jwuphysics.bsky.social · 10/03/2026To what extent are star cluster ages encoded in their environments? Congrats to my coauthors Javier Viaña, Janice Lee, Andrew Vandenburg, and the PHANGS collaboration on this paper! (and be on the lookout for a part two 👀) arxiv.org/abs/2603.07289 0101
John F Wu @jwuphysics.bsky.social · 09/03/2026This week I'll be delivering a talk and leading a tutorial for the Language AI in Space Sciences Workshop in Baltimore, hosted at STScI. So excited to see folks from all disciplines join the conversation -- including astronomers, engineers, computer scientists, librarians, and linguists. 081
John F Wu @jwuphysics.bsky.social · 28/02/2026I kind of like Zitron because he had the intellectual humility to admit that he doesn't know a thing about software engineering, but he's also now staked his career on writing about how AI can't do anything (including software engineering). 040
John F Wu @jwuphysics.bsky.social · 25/02/2026Ugh, not good. FWIW, I got a better answer... got the same answer with Gemini 3.1 Pro. But lack of reliability is a big reason why I don't currently don't trust these for literature search/citations. 110
John F Wu @jwuphysics.bsky.social · 19/02/2026Couldn't log in to my gas/electricity provider, and the email address on file didn't work. Clicked "Forgot email?" and entered my account number; was greeted by this... 140
John F Wu @jwuphysics.bsky.social · 15/02/2026Thinking enabled it right -- default free does not. 110
John F Wu @jwuphysics.bsky.social · 06/02/2026Registration closes today for the Astrophysics x NLP conference! Happening March 9-12! www.stsci.edu/contents/eve... #astronomy 🔭 🧪 🌌 050