Sean D. Johnson
@seanjohnson.bsky.social
710 followers 860 following 380 posts
Extragalactic astronomer; LSA Collegiate Fellow & Assistant Professor at @michiganastro. Dog lover. Pronouns: he/him/his 🏳️‍🌈
Posts Media Videos Starter Packs
seanjohnson.bsky.social
Seeing Frog at a lot of protests. My question: where is Toad??
protests.is
Reposted by Sean D. Johnson
niais.bsky.social
Are you someone who is interested in astronomy graduate school? This is a list of many/most departments and their expectations for admissions this year. Please feel free to spread it far and wide. If you are doing admissions and you'd like to update your entry, reach out as per the form!
US Astronomy Graduate Admissions, AY 2025-2026
docs.google.com
Reposted by Sean D. Johnson
byjoshmoody.bsky.social
MIT rejects "compact" proposed by the Trump administration.
MIT prez wrote: it "would restrict freedom of expression and our independence as an institution" and "is inconsistent with our core belief that scientific funding should be based on scientific merit alone."
orgchart.mit.edu/letters/rega...
Regarding the Compact | MIT Organization Chart
orgchart.mit.edu
seanjohnson.bsky.social
Terrifying & outstanding reporting by the best local paper I’ve ever been served by, @southsideweekly.bsky.social

“agents detained nearly every resident of the 130-unit building—including children and babies—placing them in zip ties and separating them by race into vans for more than two hours”
Bluesky
bysouthsideweekly.bsky.social
seanjohnson.bsky.social
Right! I was just thinking that Loeb must be the only person outside of the Doctor Who universe who thinks that the U.N. Is this powerful…
seanjohnson.bsky.social
With apologies, arxiv.org/pdf/2510.01405

You’ll be shocked to discover who Avi thinks should be the Director General of this new organization, reporting only to the U.N. Secretary General.
arxiv.org
seanjohnson.bsky.social
We should form a list of astronomers devoted to telling each other when one of us has gone off the rails. We’ll call it Emily’s List.
seanjohnson.bsky.social
I, too, would like 50 8-10 meter class telescope nights per year, 380 million dollars over two years, and 80 million dollars annually thereafter. If someone could arrange, that would be lovely.
seanjohnson.bsky.social
Buying a "newsletter" that costs subscribers $60/yr for a total price equivalent to nearly $1000 per paid subscriber seems like a not-good idea.
seanjohnson.bsky.social
Some devices with these tiny LEDs mistakenly end up in astronomical instruments/telescopes/domes, and people spend weeks trying to figure out where the hell the light is coming come 🤦‍♂️
seanjohnson.bsky.social
(Obviously, this turned into a longer conversation with the kid)
seanjohnson.bsky.social
Yesterday, 4-year old said of me (cis) and a friend (trans man): “you are guys because you don’t have hair on top of your head. Girls have it.”

And with that, after generations, Freudian and Lacanian theories of gender with maleness based on presence & femaleness based on absence went up in smoke.
Reposted by Sean D. Johnson
ebonyteach.blacksky.app
....sigh. Star Trek, I'll always love you, but not enough for me to keep subscribing to Paramount Plus.

Miss when Netflix had the streaming rights 10 years ago. Ah, well! Time for me to invest in some Blu Rays. 🖖🏾
seanjohnson.bsky.social
Google used to be useful as a quick calculator (though highly inefficient from an energy use standpoint), and could do unit conversions. Now, it often spits out bullshit that is orders of magnitude off. Ah well, AI ruins many things.
Reposted by Sean D. Johnson
assignedmedia.org
On Friday 18 blue state attorneys general BLASTED the Federal Trade Commission, telling it to back off trans youth healthcare and warning of an insidious attempt to reshape the regulation of medicine in the US.

And nobody covered it.

www.assignedmedia.org/breaking-new...
State AGs Defend Trans Americans in Stunning Rebuke to Trump’s FTC — Assigned
Eighteen state Attorneys General unite to stand up in defense of trans Americans, in opposition to a Federal Trade Commission investigation into trans healthcare.
www.assignedmedia.org
seanjohnson.bsky.social
They already caved on bills that were *not* clean earlier this year... so why pull out all the stops on the one clean bill that's been proposed? Am I missing something and they are actually playing 3D chess? Cause this seems like chaotic flailing about to no purpose.
seanjohnson.bsky.social
I am confused by the Dem strategy in the Senate & House. I'm all for using the filibuster as leverage. But so far as I can tell, the CR is actually clean, and the Appropriations Bills can be filibustered. Why not approve the CR, delay the bad proposals, & filibuster on Appropriations to remove them?
Reposted by Sean D. Johnson
ericmgarcia.bsky.social
Ok. So there's A LOT of misinformation about the government shutdown, the continuing resolution and gender-affirming care. There was one article in PinkNews that was VERY shoddy about what Trump said. So let's breakdown what's true and what's BS. 1/
www.thepinknews.com/2025/09/29/t...
Trump threatens to shut down US government unless all trans health care is banned
The US government's looming shutdown hinges on anti-trans measures after Donald Trump refused to speak to Democrats unless they were passed.
www.thepinknews.com
seanjohnson.bsky.social
Careful thread, & consistent with my read of the continuing resolution and budget bill proposals, which is where the actual horrors lie.

Keep calling your reps! But better to be informed on the details of the machinations while doing so. I wish we didn’t have to pay such close attention, but we do.
ericmgarcia.bsky.social
Ok. So there's A LOT of misinformation about the government shutdown, the continuing resolution and gender-affirming care. There was one article in PinkNews that was VERY shoddy about what Trump said. So let's breakdown what's true and what's BS. 1/
www.thepinknews.com/2025/09/29/t...
Trump threatens to shut down US government unless all trans health care is banned
The US government's looming shutdown hinges on anti-trans measures after Donald Trump refused to speak to Democrats unless they were passed.
www.thepinknews.com
seanjohnson.bsky.social
Was briefly impressed with my own revising when a draft paper came in 500 words shorter than before, only to discover a find-and-replace-all catastrophe while giving it what I thought was a final read.
a man wearing a blue hoodie and a beanie is walking down a sidewalk with a netflix logo in the corner
Alt: a man wearing a blue hoodie and a beanie is walking down a sidewalk with a netflix logo in the corner. From the umbrella academy
media.tenor.com