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Andrew Jaffe

@defjaf.bsky.social

Astrophysics, cosmology, Bayesian inference, parenthood, politics, rock ’n’ roll, & more. Professor at Imperial College. andrewjaffe.net He/him/his The Random Universe—coming in November. https://yalebooks.yale.edu/book/9780300250503/the-random-universe/

234 Followers  |  106 Following  |  141 Posts  |  Joined: 22.07.2023  |  1.5616

Latest posts by defjaf.bsky.social on Bluesky

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Cornhole is “American pétanque”.

06.08.2025 12:11 — 👍 1    🔁 0    💬 0    📌 0

Ulysses for longer things. Obsidian and apple notes for notes. MarsEdit for blogging from my Mac. Trying out @scripting.com’s Wordland. Plain text editors for LaTeX technical writing.

03.08.2025 03:51 — 👍 0    🔁 0    💬 0    📌 0

We left our home in London exactly a year ago for my sabbatical abroad. After stops in Japan & New York, tomorrow we depart from our last long-term stop — a temporary but already much-loved home — in Leiden, the Netherlands, with still a few weeks to go before our final return.

31.07.2025 10:34 — 👍 0    🔁 0    💬 0    📌 0

Congratulations to Imperial’s Professor Michele Dougherty, the UK’s new Astronomer Royal!

30.07.2025 07:39 — 👍 1    🔁 0    💬 0    📌 0

15% still seems like a lot.

28.07.2025 11:55 — 👍 0    🔁 0    💬 0    📌 0
The Random Universe by Andrew H. Jaffe
YouTube video by Yale Press The Random Universe by Andrew H. Jaffe

youtube.com/shorts/z1QJ4...

22.07.2025 16:27 — 👍 1    🔁 1    💬 0    📌 0

@ppfideas.bsky.social

18.07.2025 09:25 — 👍 2    🔁 0    💬 0    📌 0
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Past Present Future podcast Past Present Future is a bi-weekly History of Ideas podcast with David Runciman, host and creator of Talking Politics, exploring the history of ideas from politics to philosophy, culture to technology. David talks to historians, novelists, scientists and many others about where the most interesting ideas come from, what they mean, and why they matter.

. @ppfideas.bsky.social Thanks to the Past Present Future podcast episodes on the American Revolution, trial of Charles I & English Revolution, I finally understand the American Revolution against the tyranny of the King despite the British constitution’s weak monarch and strong Parliament.

18.07.2025 08:36 — 👍 0    🔁 0    💬 0    📌 1
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Freewheeling family fun in the Netherlands: a cycling and camping trip along the Maas river The Maasroute is the ideal entry-level, multiday bike trip for young children – flat with plenty of riverside cafes, family-friendly campsites and ice-cream stops en route

The latest from Lisa Lucas at the Guardian! Freewheeling family fun in the Netherlands: a cycling and camping trip along the Maas river. With special guests!

17.07.2025 07:24 — 👍 0    🔁 0    💬 0    📌 0

U.S. abandons hunt for signal of cosmic inflation | Science | AAAS

Now-canceled CMB-S4 project would have searched the afterglow of the Big Bang for signs of cosmic exponential growth spurt.

12.07.2025 07:16 — 👍 0    🔁 0    💬 0    📌 0

This is mildly clever, very slimy, and a little bit funny (since it only works against other slimy — or at least lazy — people).

07.07.2025 15:55 — 👍 2    🔁 0    💬 0    📌 0

@tedbunn.bsky.social Happy Birthday, Ted!

07.07.2025 15:35 — 👍 1    🔁 0    💬 1    📌 0

Thanks, Dave. It wasn't clear to me where to post feature requests; apologies for misusing/misunderstanding the infrastructure that you've set up.

07.07.2025 12:58 — 👍 0    🔁 0    💬 1    📌 0

@scripting.com Just trying to figure out how best to ask about my wordland.social questions/feature requests... (1. getting my posts into wordland when created/edited elsewhere; 2. direct markdown editing.) Are these hopeless?

07.07.2025 11:12 — 👍 0    🔁 0    💬 1    📌 0
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WORDLAND The best writer's toolkit for WordPress.

It seems that olive oil, cheap balsamic vinegar, greek yogurt, miso paste and garlic make a good chicken marinade. (Also, this is a Wordland test.)

06.07.2025 18:43 — 👍 0    🔁 0    💬 0    📌 0

www.youtube.com/watch

27.06.2025 14:03 — 👍 0    🔁 0    💬 0    📌 0

Always impressed that Stockholm Arlanda airport has eduroam WiFi.

26.06.2025 15:51 — 👍 1    🔁 0    💬 1    📌 0

Very impressed that Apple’s autocorrect knows that it’s apostrophes and not quotes in “rock ’n’ roll”.

24.06.2025 10:30 — 👍 1    🔁 0    💬 0    📌 0
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Flat tire in the Biesbosch (Holland, near Dordrecht).

15.06.2025 12:50 — 👍 2    🔁 0    💬 0    📌 0

Yes! (But you can pre-order today…)

11.06.2025 04:52 — 👍 2    🔁 0    💬 0    📌 0
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The Random Universe An award-winning astrophysicist looks at how the understanding of uncertainty and randomness has led to breakthroughs in our knowledge of the cosmos   All o...

From “aether” to “Zwicky, Fritz”, The Random Universe now has an index. yalebooks.yale.edu/book/9780300...

10.06.2025 18:25 — 👍 4    🔁 1    💬 1    📌 0
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My morning bicycle commute (Leiden, NL)

03.06.2025 13:21 — 👍 2    🔁 0    💬 1    📌 0

I love the Netherlands, and I especially love cycling in the Netherlands. I don’t love the various motorized vehicles that are allowed to share the cycle lanes in the Netherlands.

26.05.2025 13:37 — 👍 1    🔁 0    💬 0    📌 0

Well, now I have a story about the time I went to see The Mekons but accidentally saw a very loud hardcore band with two drummers instead. This was not my desired outcome. (The Mekons were upstairs. I am kind of bereft.)

18.05.2025 22:16 — 👍 0    🔁 0    💬 0    📌 0
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Horror, by Mekons 12 track album

Going to Amsterdam, in the fourth country over 35 years in which I’ve seen The @mekons.bsky.social, a band whose music and shows and philosophy of life, art, and politics have meant more to me than almost any other.

18.05.2025 17:38 — 👍 1    🔁 0    💬 0    📌 0
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Eight teamLab Sensory Playgrounds to Visit on Your Next Vacation The group’s psychedelic sensory playgrounds of light, sound, stars, bubbles, birds and more are expanding around the globe, dazzling millions of visitors a year.

The latest from the amazing Lisa Lucas at the NYT!

17.05.2025 10:21 — 👍 0    🔁 0    💬 0    📌 0

@yalepress.bsky.social

16.05.2025 15:42 — 👍 0    🔁 0    💬 0    📌 0

@yalebooks.bsky.social

16.05.2025 08:37 — 👍 1    🔁 0    💬 0    📌 0
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Proof!

Coming later this year, but you can pre-order from your favourite small bookseller today.

16.05.2025 08:17 — 👍 9    🔁 2    💬 3    📌 0

Apparently, my fingerprints are almost worn down (according to biometric scans of the Dutch Immigration and Naturalisation Service (IND).

15.05.2025 12:35 — 👍 0    🔁 0    💬 1    📌 0

@defjaf is following 20 prominent accounts