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Katie Mack

@astrokatie.com
330K followers 1.5K following 13K posts

Cosmologist, pilot, author, connoisseur of cosmic catastrophes. TEDFellow, CIFAR Azrieli Global Scholar. Domain verified through my personal astrokatie.com website. She/her. Dr. Personal account; not speaking for employer or anyone else.

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Katie Mack @astrokatie.com · 49m
On the day of the competition they told me I was doing well but that I shouldn’t get my hopes up about winning because the CEOs of the big watch companies compete and are very invested 😳
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Reposted by Katie Mack
Dr Hannah M. Rowland @hannahmrowland.bsky.social · 14h
Hope your day was better than Darwin’s, on this day 165 years ago
I am very poorly today & very stupid & hate everybody &everything.

Charles Darwin
Letter to Charles Lyell
1st October 1861
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Reposted by Katie Mack
Simeon Schmauß @stim3on.bsky.social · 18h
I 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
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Katie Mack @astrokatie.com · 14h
😂
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Katie Mack @astrokatie.com · 14h
bsky.app/profile/astr... 🤷‍♀️
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Reposted by Katie Mack
Kieran Healy @kjhealy.co · 15h
I 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.
Semafor graph with catastrophic drops.
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Katie Mack @astrokatie.com · 15h
I agree with you that they are marvels! I'm sure that maintaining 0.77 s/d is as much up to the quality of the watch itself as to the calibration I did.
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Katie Mack @astrokatie.com · 18h
No one is claiming that abuse of power is a problem that's exclusive to academia; I can speak only about academia and share some useful information some people outside of it might not be aware of.
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Katie Mack @astrokatie.com · 18h
They didn’t tell me much about the specific movement. The final result was +0.77 s/d. The organization running the competition was COSC – Contrôle Officiel Suisse des Chronomètres.
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Katie Mack @astrokatie.com · 18h
I think the only thing that helped me from my day job is being patient and waiting to see what the effects of changes were before correcting them. This is also helpful in aviation!
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Katie Mack @astrokatie.com · 19h
I feel like maybe I’m obligated to become one now?
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Katie Mack @astrokatie.com · 19h
I did not get a watch; I got a very nice e-mail
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Katie Mack @astrokatie.com · 19h
🤣
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Katie Mack @astrokatie.com · 19h
I was told that the CEOs of all the big watch companies enter the competition each year and are very invested
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Katie Mack @astrokatie.com · 19h
They made me a reel and sent a nice e-mail with the calibration testing results.
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Katie Mack @astrokatie.com · 19h
😂
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Katie Mack @astrokatie.com · 19h
No, alas
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Katie Mack @astrokatie.com · 19h
Debating adding "champion amateur horologist" to my bio
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Katie Mack @astrokatie.com · 19h
Have you been alerting the people being impersonated or just leaving it alone? (I'm torn whenever I receive one of these)
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Katie Mack @astrokatie.com · 20h
🙄
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Katie Mack @astrokatie.com · 20h
I guess so. I imagine the cost to them of reaching each author is ~ $0 and probably the less successful ones are more likely to bite.
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Katie Mack @astrokatie.com · 20h
Ugh
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Katie Mack @astrokatie.com · 20h
Oh I've gotten a few of those as well.
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Katie Mack @astrokatie.com · 20h
"We center our audience’s experience around boundary-breaking non-fiction that functions as a direct catalyst for alternative self-reckonings" no you don't you're a chatbot preying on the hopes of authors and you should be permanently deleted for that phrasing alone
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Katie Mack @astrokatie.com · 20h
I 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. 😠
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Katie Mack @astrokatie.com · 20h
I had no idea what it even was before I did it!
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Katie Mack @astrokatie.com · 22h
They just labeled the movement as GWD26-12 (where GWD26 is presumably for Geneva Watch Days 2026). As for the precision, I got it to +0.77 s/d.
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Katie Mack @astrokatie.com · 23h
I’m not sure. I haven’t seen one
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Katie Mack @astrokatie.com · 01/10/2026
They did send me the detailed calibration results as a PDF
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Katie Mack @astrokatie.com · 01/10/2026
I have but it has been a very long time!
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Katie Mack @astrokatie.com · 01/10/2026
They did! They sent me a full report with all the numbers.
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Katie Mack @astrokatie.com · 01/10/2026
Ughhhh
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Katie Mack @astrokatie.com · 01/10/2026
No, alas
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Katie Mack @astrokatie.com · 01/10/2026
I think the prize is a feeling of accomplishment
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Katie Mack @astrokatie.com · 01/10/2026
Just bragging rights
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Katie Mack @astrokatie.com · 01/10/2026
It’s so disturbing. At least they (very slightly) toned it down for the film???
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Katie Mack @astrokatie.com · 01/10/2026
There was a computer screen with a graph and numbers telling me the rate and its drift so I could see if the tweaks were going in the right direction
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Katie Mack @astrokatie.com · 01/10/2026
😅
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Katie Mack @astrokatie.com · 01/10/2026
There are little tiny tiny bits that you rotate with a tiny poky thing and then you can tweak it a bit more with a tiny screwdriver
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Katie Mack @astrokatie.com · 01/10/2026
I don’t think there is a prize — at least, no one has mentioned one. But it’s still cool to have won!
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Katie Mack @astrokatie.com · 01/10/2026
I was certainly not aware that I could do this!
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Reposted by Katie Mack
Ariel Edwards-Levy @aedwardslevy.bsky.social · 01/10/2026
I think this qualifies you to be time's person of the year
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Katie Mack @astrokatie.com · 01/10/2026
I had no idea what I was doing I just tweaked the bits until the numbers looked good and apparently that was the correct thing
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Katie Mack @astrokatie.com · 01/10/2026
Yeah
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Katie Mack @astrokatie.com · 01/10/2026
😂
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Katie Mack @astrokatie.com · 01/10/2026
I 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...
Me peering through a little magnifier at a tiny watch mechanism connected to some monitoring equipment, while making adjustments with a small screwdriver
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Katie Mack @astrokatie.com · 01/10/2026
Wait who’s Ana?
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Earth @earthin24.bsky.social · 30/09/2026
🌏 2026 🗓 29th - 30th September 🕛 12:00Z 🛰 Himawari8
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Katie Mack @astrokatie.com · 01/10/2026
bsky.app/profile/astr...
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Katie Mack @astrokatie.com · 01/10/2026
Well explaining it ruins it of course but the allusion I was trying to make is that US tourism levels are approaching those of the time when a literal plague prevented travel 😐
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