Katie Mack @astrokatie.com · 07/08/2026I am absolutely thrilled to present to you: How to Build a Universe (Theoretically Speaking) available for pre-order now, wherever you buy your books! www.simonandschuster.ca/books/How-to... 1693246736
Reposted by Katie MackDr Hannah M. Rowland @hannahmrowland.bsky.social · 11hHope your day was better than Darwin’s, on this day 165 years ago 15469781802
Reposted by Katie MackSimeon Schmauß @stim3on.bsky.social · 15hI hinted that there would be more images from the Juice flyby, so here is the timelapse of the full event! It's always amazing to get these views of our fragile Blue Marble from the spacecraft we send out to explore the solar system! 🔭🧪 #planetsci 821055
Reposted by Katie MackKieran Healy @kjhealy.co · 11hI keep seeing this Semafor graph that seems to show the Trump administration’s effect on international visits is comparable to the pandemic. My first thought was “that can’t be true” and indeed it is not. This is monthly data. We only have to Jun/Aug 2026. The lines are over-fitted to the months. 932986
Katie Mack @astrokatie.com · 17hI know I should always just block and delete but every time I get one of those LLM author scam e-mails I REALLY want to write back and yell at them for being awful. 😠 634712
Reposted by Katie MackAriel Edwards-Levy @aedwardslevy.bsky.social · 01/10/2026I think this qualifies you to be time's person of the year 24111321
Katie Mack @astrokatie.com · 01/10/2026I went to Geneva a few weeks ago and spoke on a panel about the nature of time for a Geneva Watch Days event. While I was there, on a lark, I entered a competition to most precisely calibrate a Swiss watch. And today I found out that I won! 😃 www.instagram.com/reel/Dd6hUTB... 3789773543
Reposted by Katie MackEarth @earthin24.bsky.social · 30/09/2026🌏 2026 🗓 29th - 30th September 🕛 12:00Z 🛰 Himawari8 111624
Katie Mack @astrokatie.com · 30/09/2026One of the most harrowing things about academia, when you're a grad student, is how vulnerable you are to how you're perceived by more senior researchers. Your career advancement depends on confidential letters of reference & private discussions amongst faculty. You have no information or control. 13869142
Katie Mack @astrokatie.com · 30/09/2026Several people are mad about this so I will briefly clarify! No, I’m not saying a novel is comparable to a real-life assault in any way. No, I’m not saying the author is bad or responsible for bad things. I am saying I’ve seen real bad stuff come from “consensual” student-faculty relationships. 1962042
Reposted by Katie MackBrian G. aka urbanbohemian 🪩🥂💖 @urbanbohemian.com · 30/09/2026We're on Bluesky, put the link in your post. Put the link in your post. Put. The. Link. In. Your. Post. Links in posts aren't buried or de-prioritized here. This is one of the last platforms you don't have to make interested users do detective work to find the link. Just put it in the post. 82046653
Reposted by Katie MackJeff VanderMeer @jeffvandermeer.bsky.social · 30/09/2026They quoted me in this New Yorker piece about AI today. www.newyorker.com/culture/the-... 115110632741
Reposted by Katie MackKatie Mack @astrokatie.com · 13/02/2025I am no longer accepting the argument "there are bigger problems than this!" unless you are personally working to stop the ultimate Heat Death of the Universe. 337187122155
Katie Mack @astrokatie.com · 29/09/2026In a variant on the "oh so you hate waffles" tedium, today I received "oh so you think pancakes and waffles are equally bad" 🙄 460318
Katie Mack @astrokatie.com · 29/09/2026A small quality-of-life thing I recently discovered is that if there is some artwork you really like or some photos that make you happy you can get them printed as a custom calendar (there are several print sites that do this) and every month a lovely new bit of joy is there for you on your wall. 1843720
Katie Mack @astrokatie.com · 29/09/2026Thinking a lot lately about the men I know who are willfully ignorant about power dynamics and how I don’t *know* they’ve done anything specifically worse than be willfully ignorant about power dynamics but also if I had to guess which of my acquaintances had, I’d guess them first. 121187136
Reposted by Katie MackHannah Vardit @hannahvardit.bsky.social · 29/09/2026you will encounter more opportunities in life to change the batteries on a smoke alarm than you will to run into a burning building and no one gives a shit you changed those batteries but it is still very important and why are you waiting on a burning building, know what i’m saying, it’s a metaphor 03621765
Reposted by Katie MackBen Winters @benwinters.bsky.social · 29/09/2026that chatbot doing that unsafe/violative thing is not it 'going rogue' or an 'unfortunate incident of unintended consequences,' it’s the logical and devastating consequences of an unsafe product put out by irresponsible companies that have been conditioned to believe consequences dont exist for them 7788252
Reposted by Katie Mack⭐ ᗰᗩᖇᛕ ᗩ. ǤᗩᖇᒪIᑕᛕ ⭐ @markgarlick.com · 25/09/2026Interior render of my space hotel scene, created in #Blender. All my own work except the character. #sciart #scicom #scifi 1318121
Reposted by Katie MackKelsey Atherton @atherton.bsky.social · 19/09/2026Kinda wild to see candidates tacking right to an imagined center when gas is on track to cost infinite dollars by election day 51104179
Katie Mack @astrokatie.com · 24/09/2026ATTENTION THE BEST THING ABOUT AUTUMN HAS FINALLY ARRIVED IT IS TIME FOR TINY DOGS IN TINY SWEATERS 1313222300
Katie Mack @astrokatie.com · 23/09/2026Good morning from @perimeterinstitute.bsky.social ! ☀️ 1448511
Katie Mack @astrokatie.com · 23/09/2026Excited to reflect, absorb, and emit light EXTRA WELL today ✨💃⚡️ #BiVisibilityDay 6711103
Reposted by Katie MackLisa 🇨🇦 @peacewind.aero · 23/09/2026Katie talks a bit about the Chipmunk trip to Oshkosh in this episode. But also she give some solid general life advice that EVERY SINGLE ONE OF YOU needs to hear. Go on! Give it a listen! 0567
Reposted by Katie MackCarl T. Bergstrom @carlbergstrom.com · 19/09/2026When we talk about the costs that LLMs impose on society we should not forget the fact that nothing works anymore because everyone is so scared of getting their shit scraped. I can't even use google scholar from my university or starlink because they send too much traffic. 984457966
Reposted by Katie Mackjamelle @jamellebouie.net · 23/09/2026i think you can fairly say that the second trump administration is the most racist federal administration since woodrow wilson and honestly i'm not sure that it isn't more racist than wilson's 164113102109
Katie Mack @astrokatie.com · 22/09/2026Today is my “recover from all the travel” day and my brain is switched off for the duration so here are some photos from my LA trip 95498
Reposted by Katie MackCedar Riener @criener.bsky.social · 21/09/2026Every innovation and change in business these days is either: We took this product you like and turned it into a subscription We took this subscription you begrudgingly pay and added some ads We took these ads you found annoying and found more ways to find you 15713221
Reposted by Katie MackMike In The Front✈️ @mikeinthefront.bsky.social · 20/09/2026We’re back with Season 2! Episode 16 features my friend @astrokatie.com who is known for her universal research. But did you know she’s also a warbird pilot? Check out our conversation here or wherever you get your podcasts! www.mikeinthefront.ca/e/ep-16-dr-k...mikeinthefront.caEP 16 - Dr. Katie Mack: From Dark Matter to Yellow Birds | Mike In The FrontDr. Katie Mack is known best for being a theoretical astrophysicist who studies questions in cosmology (the study of the universe from beginning to end) at the Perimeter Institute for Theoretical Phys... 111011
Katie Mack @astrokatie.com · 20/09/2026Fully electric aviation has some major challenges (mostly: batteries are heavy and don't get lighter as they get used up) but I love the idea of decreasing aircraft emissions through a hybrid approach, perhaps as a step toward new, clever solutions for fully electric air transport in the future. 741900320
Katie Mack @astrokatie.com · 20/09/2026I enjoyed fall more before I moved to Canada and it started carrying with it a sense of impending doom. 6391642
Katie Mack @astrokatie.com · 20/09/2026Apropos of the campus-setting novel I’m currently reading, I’d just like to put out there that I am available to authors to consult on what grad students and researchers and professors actually do and act like and my rates are reasonable. 39103685
Katie Mack @astrokatie.com · 19/09/2026If he just wants an existing government division without the R we can manage that with the legislative branch in November 1127613
Reposted by Katie MackMike In The Front✈️ @mikeinthefront.bsky.social · 18/09/2026What does the ultimate fate of the cosmos and my aviation podcast have in common? Tune in for Season 2 of the Mike In The Front Podcast to find out! Coming soon! MikeInTheFront.camikeinthefront.caMike In The Front | Mike In The FrontWelcome to the Mike in the Front podcast!</p> <p>Join your host, Mike, a Canadian professional airline pilot as he discusses his adventures in aviation and talks to friends, mentors, colleagues, and o... 0264
Reposted by Katie MackMark Dowhy @empiricalcuriosity.bsky.social · 18/09/2026Given all that is going on in the world, here’s a great discussion to make us feel there is hope. 😉😁 Thanks @particleclara.bsky.social @astrokatie.com youtube.com/shorts/_K4XZ...youtube.comThe universe will end one day #scienceYouTube video by Dr Clara Nellist 16013
Reposted by Katie MackDavid Blue @davidblue.bsky.social · 17/09/2026Pretty cool getting to see a friend kill in on a stage of badasses. But no surprise, as they are, themselves, a badass. Thanks for the invite @astrokatie.com! Cool getting to chill with @hankgreen.bsky.social , Mark Rober, Abigail Thorn, and so many more. More pics on my insta. 🖖 1513
Katie Mack @astrokatie.com · 15/09/2026I wrote back to an author-scam AI slop e-mail to tell them to go away and the bot replied that it would never contact me again and then a few days later the person replied at a completely different literacy level, offended I accused them of using AI and saying I should be nicer & give them a chance. 2166929
Reposted by Katie MackLuke Dones @lukemeister.bsky.social · 14/09/2026🧵 "... ∼40% of realizations [undergo] disruption or violent scattering before the white dwarf forms and ∼90% self-[destruct] within 3 Gyr. The outer Solar System’s dynamical lifetime thus collapses from 10^18 years to approximately a gigayear after white dwarf formation." 🪐😢 6655
Reposted by Katie MackCarl T. Bergstrom @carlbergstrom.com · 14/09/2026When we talk about how science is broken, maybe at least consider how a huge collaboration measured the ripples in spacetime resulting the collision of two black holes 1.3 billion light years away, as counterweight the guy who had to fake his data to show that people who procrastinate fall behind. 19876134
Reposted by Katie MackJonathan McDowell @planet4589.bsky.social · 14/09/2026Apparently the commander of the International Space Station brought her dancing pants to space with her 1163138704
Reposted by Katie MackMike Morrice @morricemike.bsky.social · 14/09/2026We’re throwing a party you don’t want to miss! 🎉 Join us as a Green Party of Canada member for a night of live music, astrophysics, comedy, and drag! Not a member yet? Sign up at mikeforleader.ca or at the door! RSVP here: action.qomon.org/3728b90b-ral... 0307
Reposted by Katie MackOlivia Campbell @oliviacampbell.bsky.social · 14/09/2026In which I recommend 5 recent/forthcoming books that sound intriguing. Featuring work by Moiya McTier @goastromo.bsky.social, Katie Mack @astrokatie.com, Hillary Rosner, Kristin Hugo @kristinhugo.bsky.social, & Caroline Tracey @cetracey.bsky.social oliviacampbell.substack.com/p/nature-is-...oliviacampbell.substack.comNature is Healing! - 5 Books I’m Looking Forward ToOr, science books are making a comeback 1202
Reposted by Katie MackRebecca Watson @skepchick.org · 12/09/2026If you’ve ever tried writing grants for a nonprofit you know how incredible this is. People work for weeks on proposals, jumping thru hoops to funds like Chan Zuckerberg asking for crumbs only to be rejected. And Scott just…throws money at orgs bc that’s what a good person does. 17905119
Katie Mack @astrokatie.com · 12/09/2026“these solutions are announced in a rush, leaving no time for a proper writeup, the isolation of new methods & ideas, & citing relevant previous work of others. … We are witnessing a general threat to intellectual work, with misalignment between the outcome of the use of AI and its initial purpose.” 9758177
Reposted by Katie MackAliette de Bodard @aliettedebodard.com · 10/09/2026Did you read the Belgian Maths society enquiry into the matter? It's clear, well balanced and completely searing as indictments go bms.ulb.ac.be/data/uploads... (Yes it's in LateX I am sorry)bms.ulb.ac.be 36719
Katie Mack @astrokatie.com · 10/09/2026A small request: If you're sending people a form in which there are fields for "Name" and "Title," please specify whether by "Title" you mean "honorific" (Dr/Prof/Ms/Mx etc) or "job title" (Professor of Physics) because I absolutely never know which is being requested and the answers are different. 4566723