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Paul Duffell

@paulduffell.bsky.social

I'm Paul and I do Hydro. Professor of Physics and Astronomy at Purdue University. Located in beautiful Lafayette, Indiana. Host of the Astrophysics Podcast. Group Website: http://physics.purdue.edu/duffell/ Podcast Website: rss.com/podcasts/astrophysics/

516 Followers  |  59 Following  |  329 Posts  |  Joined: 27.10.2024  |  2.049

Latest posts by paulduffell.bsky.social on Bluesky

Very surreal to see the names of people I know personally in these files, even when it's just things like this shortlist.

10.02.2026 17:42 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Every prospective postdoc I talk to is experiencing the same thing. It's not over til the Hubble cascade this month, but things are not looking good out there.

08.02.2026 19:51 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I haven't! I will take a look.

05.02.2026 17:34 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Love these results. I've already sent Rana to build off-axis models with predictions for sky images. We will email you once we are further along!

05.02.2026 17:20 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Halfway through feeding my baby, she starts pointing ominously at the clock, making me feel like I'm forgetting an appointment or something. But no, she just really likes clocks.

04.02.2026 23:14 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Logo for The Astrophysics Podcast.  Basically it's the name of the podcast above a glowing, fiery ball that looks kind of like the sun.  Actually it's a hydrodynamic simulation of a supernova remnant exhibiting hydrodynamic instability.

Logo for The Astrophysics Podcast. Basically it's the name of the podcast above a glowing, fiery ball that looks kind of like the sun. Actually it's a hydrodynamic simulation of a supernova remnant exhibiting hydrodynamic instability.

Photo of Dr. Gurtina Besla, an astrophysicist from the University of Arizona.

Photo of Dr. Gurtina Besla, an astrophysicist from the University of Arizona.

πŸ”­πŸ§ͺ

The latest episode of the #astrophysics #podcast is now available! I discuss interesting ways of learning about dark matter in the Milky Way with Dr. Gurtina Besla from the University of Arizona:

rss.com/podcasts/ast...

02.02.2026 18:11 β€” πŸ‘ 9    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

You should just get chatGPT to read it for you.

02.02.2026 17:52 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Can you come run our faculty meetings?

31.01.2026 16:33 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Pretty much all AI marketing is based on the assumption that you hate doing your job.

"You're a songwriter -- don't you hate having to write songs all day?"

30.01.2026 20:58 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
FUNKY SMUNKY, Y'ALL!

FUNKY SMUNKY, Y'ALL!

22.01.2026 11:43 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Your children will have great childhoods and lives just by virtue of having you as a mom.

18.01.2026 22:39 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Very often I see the entire first paragraph they are talking about themselves rather than talking about their student, which really doesn't send a good message, and my immediate thought is "OMG I don't care". But I'm sure it's possible to introduce yourself without sending that message.

14.01.2026 16:01 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Tips for writing recommendation letters, by someone reading them: πŸ§ͺπŸ”­

1. If you're writing to give a very strong recommendation, say that in the first sentence.
2. If they did research for you, say that in the first few sentences.
3. "First, a little bit about me for context..." <- delete this.

14.01.2026 15:15 β€” πŸ‘ 22    πŸ” 2    πŸ’¬ 2    πŸ“Œ 0

I feel like there's no way to do this without looking petty, even if you are in the right.

13.01.2026 15:09 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Every Monday I have "writing hour" with my students, we go to the coffee shop across the street for time purely devoted to writing. Some stay longer than an hour, but I think the idea of devoted time for writing is essential, however you do it.

12.01.2026 11:35 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Awesome!

06.01.2026 04:32 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Oh, sorry to hear that! Hope to catch you some other conference!

06.01.2026 04:31 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Oh hey! I'm there too! I'll try to keep an eye out for you!

05.01.2026 23:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Seems very well-timed to me! Summertime with the babies!

02.01.2026 16:24 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I had kind of assumed they did that already. Don't editors get holiday break? It's not like they're air traffic controllers or something.

14.12.2025 13:13 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Oh no! That will definitely happen to me one day because I will promptly forget this fact!

11.12.2025 10:38 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I'm just about to go teach my cosmology class in an hour, this is actually perfect!

09.12.2025 15:58 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Wow, congratulations!

08.12.2025 14:22 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Looks like the same status as TCAN, which is not reassuring.

05.12.2025 16:51 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Yeah Purdue generally has a very international grad student population, with a ton of amazing students from China. But I'd prefer not to talk over social media about what I've personally witnessed, so I'll leave it at that.

04.12.2025 16:09 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Purdue effectively bans grad students from China, other countries, faculty say Administrators have apparently urged departments to turn away certain international students.

Hmmm, interesting article.

www.jconline.com/story/news/l...

04.12.2025 15:41 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Dr. Kaitlin Kratter, Professor of Astronomy at the University of Arizona.

Dr. Kaitlin Kratter, Professor of Astronomy at the University of Arizona.

Logo of the astrophysics podcast, with a big bright supernova about to smack into the title.

Logo of the astrophysics podcast, with a big bright supernova about to smack into the title.

December's episode of the #astrophysics #podcast is here! This month, I interview Dr. Kaitlin Kratter of the University of Arizona. We talk about how she figures out how the planets form by putting a solar system on the computer! πŸ”­πŸ§ͺ

01.12.2025 16:31 β€” πŸ‘ 18    πŸ” 4    πŸ’¬ 1    πŸ“Œ 0

At least that helps you narrow down the list!

22.11.2025 01:02 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Every now and then, you check into a hotel from a certain era and it's like you're spending the night inside a Denny's.

17.11.2025 02:01 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

My daughter's current frustration: she wants to have her book and eat it too.

14.11.2025 18:00 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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