Sarah Hörst
@planetdr.bsky.social
Professor of planetary science at Johns Hopkins. Titan’s biggest fan. Pomeranian wrangler. Runner. Love many, trust few, always paddle your own canoe. She/her. sarahhorst.com
Planetdr.26 on signal
Planetdr.26 on signal
Reposted by Sarah Hörst
Hi #planetaryScience folks, we have an open position for a *Professor in Planetary Sciences* at the Space Research & Planetary Sciences Division of the @unibe.ch.
Application deadline: *Jan 31, 2026*
Full ad: ohws.prospective.ch/public/v1/jo...
Reach out to me if you have any questions!
🧵 1/5
Application deadline: *Jan 31, 2026*
Full ad: ohws.prospective.ch/public/v1/jo...
Reach out to me if you have any questions!
🧵 1/5
Uni Bern: Professor in Planetary Sciences
The Division of Space Research and Planetary Sciences of the Physics Institute, University of Bern, Switzerland, invites applications for a full-time position as a Professor in Planetary Sciences.
ohws.prospective.ch
November 17, 2025 at 3:51 PM
Hi #planetaryScience folks, we have an open position for a *Professor in Planetary Sciences* at the Space Research & Planetary Sciences Division of the @unibe.ch.
Application deadline: *Jan 31, 2026*
Full ad: ohws.prospective.ch/public/v1/jo...
Reach out to me if you have any questions!
🧵 1/5
Application deadline: *Jan 31, 2026*
Full ad: ohws.prospective.ch/public/v1/jo...
Reach out to me if you have any questions!
🧵 1/5
Reposted by Sarah Hörst
November 24, 2025 at 11:46 PM
Reposted by Sarah Hörst
Every Democrat in Congress should put out a video saying troops have an obligation to refuse unlawful orders. Make them prosecute all of you. This isn't a close call.
I'd add Republicans too if I thought any of them had the courage to actually cross Trump on this.
I'd add Republicans too if I thought any of them had the courage to actually cross Trump on this.
Hegseth is now threatening to recall Sen. Mark Kelly to active duty in order to court martial him.
November 24, 2025 at 5:52 PM
Every Democrat in Congress should put out a video saying troops have an obligation to refuse unlawful orders. Make them prosecute all of you. This isn't a close call.
I'd add Republicans too if I thought any of them had the courage to actually cross Trump on this.
I'd add Republicans too if I thought any of them had the courage to actually cross Trump on this.
Reposted by Sarah Hörst
Thanks to Champagne for linking to another article of mine, which offers further justification as to why telling students to audit a ChatGPT essay for errors is also ill advised. bsky.app/profile/mich...
These assignments encourage people to become DIY detectives, exacerbating a boom in conspiracy theories. The “permission structure of doubt” normalises suspicion as a default setting and suggests that another algorithm (like Google’s search) can discover the truth.
By @sonjadrimmer.bsky.social:
By @sonjadrimmer.bsky.social:
AI-Generated Images Are Spreading Paranoia and Misinformation. Can Art Historians Help?
An art historian argues that provenance research—rather than connoisseurship—is our best tool for authentication.
www.artnews.com
November 24, 2025 at 1:20 PM
Thanks to Champagne for linking to another article of mine, which offers further justification as to why telling students to audit a ChatGPT essay for errors is also ill advised. bsky.app/profile/mich...
Reposted by Sarah Hörst
This is not the way, and @cnygren.bsky.social and I lay out in detail why it isn’t in this essay here. static1.squarespace.com/static/55577...
November 24, 2025 at 1:16 PM
This is not the way, and @cnygren.bsky.social and I lay out in detail why it isn’t in this essay here. static1.squarespace.com/static/55577...
Reposted by Sarah Hörst
It’s blowing my mind that schools, universities, public services would run headlong into this. We spent 15 years documenting black boxes. This is a black box in a black hole!
I don't understand how anyone can watch how blatantly Grok is manipulated to answer the way ownership desires it to and then act like the other LLM chatbots couldn't possibly be similarly but less obviously compromised to produce responses in whatever way corporate interests and priorities dictate.
November 23, 2025 at 11:16 PM
It’s blowing my mind that schools, universities, public services would run headlong into this. We spent 15 years documenting black boxes. This is a black box in a black hole!
Do any of you lovely folks work at FB or meta?
November 24, 2025 at 2:26 PM
Do any of you lovely folks work at FB or meta?
I was out hiking and a mountain biker passed.
Me: have a nice ride!
Him: you too!
Him: *flustered realizing I wasn’t riding*
Him: *processing*
Him: *processing*
Him: enjoy your legs!
Well that settles that for my new trail greeting.
Me: have a nice ride!
Him: you too!
Him: *flustered realizing I wasn’t riding*
Him: *processing*
Him: *processing*
Him: enjoy your legs!
Well that settles that for my new trail greeting.
November 23, 2025 at 10:53 PM
I was out hiking and a mountain biker passed.
Me: have a nice ride!
Him: you too!
Him: *flustered realizing I wasn’t riding*
Him: *processing*
Him: *processing*
Him: enjoy your legs!
Well that settles that for my new trail greeting.
Me: have a nice ride!
Him: you too!
Him: *flustered realizing I wasn’t riding*
Him: *processing*
Him: *processing*
Him: enjoy your legs!
Well that settles that for my new trail greeting.
Reposted by Sarah Hörst
DOGE did not fail in any way to accomplish its goals.
Its goals were never efficiency or saving money.
Its goals were to destroy as much of government as possible forever, and to steal data for the Space Nazi.
DOGE is fading away like bank robbery gangs fade away after the robberies are done.
Its goals were never efficiency or saving money.
Its goals were to destroy as much of government as possible forever, and to steal data for the Space Nazi.
DOGE is fading away like bank robbery gangs fade away after the robberies are done.
Exclusive: DOGE 'doesn't exist' with eight months left on its charter reut.rs/4abeTdx
Exclusive: DOGE 'doesn't exist' with eight months left on its charter
The Department of Government Efficiency claimed to have slashed tens of billions of dollars in expenditures, but it was impossible for outside financial experts to verify that because the unit did not provide detailed public accounting of its work.
reut.rs
November 23, 2025 at 12:26 PM
DOGE did not fail in any way to accomplish its goals.
Its goals were never efficiency or saving money.
Its goals were to destroy as much of government as possible forever, and to steal data for the Space Nazi.
DOGE is fading away like bank robbery gangs fade away after the robberies are done.
Its goals were never efficiency or saving money.
Its goals were to destroy as much of government as possible forever, and to steal data for the Space Nazi.
DOGE is fading away like bank robbery gangs fade away after the robberies are done.
Reposted by Sarah Hörst
Journalist challenge: Use “Machine Learning” when you mean machine learning and “LLM” when you mean LLM. Ditch “AI” as a catch-all term, it’s not useful for readers and it helps companies trying to confuse the public by obscuring the roles played by different technologies. 🧪
November 22, 2025 at 4:50 PM
Journalist challenge: Use “Machine Learning” when you mean machine learning and “LLM” when you mean LLM. Ditch “AI” as a catch-all term, it’s not useful for readers and it helps companies trying to confuse the public by obscuring the roles played by different technologies. 🧪
Reposted by Sarah Hörst
About that exclusive, "closed-to-press" MAHA summit last week with RFK and JD Vance: I got in.
Here's what I saw. 🧵 🧪
www.nature.com/articles/d41...
Here's what I saw. 🧵 🧪
www.nature.com/articles/d41...
November 21, 2025 at 5:01 PM
About that exclusive, "closed-to-press" MAHA summit last week with RFK and JD Vance: I got in.
Here's what I saw. 🧵 🧪
www.nature.com/articles/d41...
Here's what I saw. 🧵 🧪
www.nature.com/articles/d41...
Reposted by Sarah Hörst
It's Friday, and apparently bluesky is ready for this fun revelation:
Dinosaurs lived on the other side the Galaxy.
Dinosaurs lived on the other side the Galaxy.
November 21, 2025 at 5:11 PM
It's Friday, and apparently bluesky is ready for this fun revelation:
Dinosaurs lived on the other side the Galaxy.
Dinosaurs lived on the other side the Galaxy.
So a while ago we got a department goose and wellllll things have been escalating
I do wonder what they are plotting
I do wonder what they are plotting
November 21, 2025 at 11:32 PM
So a while ago we got a department goose and wellllll things have been escalating
I do wonder what they are plotting
I do wonder what they are plotting
Reposted by Sarah Hörst
Zohran flip your hair again we need healthcare get him to give us healthcare.
November 21, 2025 at 9:26 PM
Zohran flip your hair again we need healthcare get him to give us healthcare.
Reposted by Sarah Hörst
He’s surrounded by such wormy little losers at the White House that I think he was like wow a cool guy
November 21, 2025 at 8:51 PM
He’s surrounded by such wormy little losers at the White House that I think he was like wow a cool guy
Reposted by Sarah Hörst
A health care industry rag featured a story on how hospitals want to use AI for nursing the day after the administration declares nursing degrees will no longer be considered professional degrees. So there’s the endgame folks.
Same for public education.
Same for public education.
November 21, 2025 at 8:05 PM
A health care industry rag featured a story on how hospitals want to use AI for nursing the day after the administration declares nursing degrees will no longer be considered professional degrees. So there’s the endgame folks.
Same for public education.
Same for public education.
Reposted by Sarah Hörst
New from me: I talked to CDC staffers about the new vaccines and autism page. They said things like:
“The best way I can put it is it feels like we’re on a hijacked airplane.”
“I think people are starting to see that we can’t fulfill our mission here.”
“The best way I can put it is it feels like we’re on a hijacked airplane.”
“I think people are starting to see that we can’t fulfill our mission here.”
“Embarrassing” and “horrifying”: CDC workers describe the new vaccines and autism page
"The best way I can put it is it feels like we're on a hijacked airplane."
www.motherjones.com
November 21, 2025 at 5:41 PM
New from me: I talked to CDC staffers about the new vaccines and autism page. They said things like:
“The best way I can put it is it feels like we’re on a hijacked airplane.”
“I think people are starting to see that we can’t fulfill our mission here.”
“The best way I can put it is it feels like we’re on a hijacked airplane.”
“I think people are starting to see that we can’t fulfill our mission here.”
Reposted by Sarah Hörst
Why do they give?
“If you’re a billionaire, you want to stay a billionaire,” John Catsimatidis told @bethreinhard.bsky.social. “I worry about America and the way of life we have.”
www.washingtonpost.com/politics/int...
“If you’re a billionaire, you want to stay a billionaire,” John Catsimatidis told @bethreinhard.bsky.social. “I worry about America and the way of life we have.”
www.washingtonpost.com/politics/int...
How billionaires took over American politics
The current concentration of wealth is unlike anything in history. So is billionaires’ involvement in politics.
www.washingtonpost.com
November 21, 2025 at 2:59 PM
Why do they give?
“If you’re a billionaire, you want to stay a billionaire,” John Catsimatidis told @bethreinhard.bsky.social. “I worry about America and the way of life we have.”
www.washingtonpost.com/politics/int...
“If you’re a billionaire, you want to stay a billionaire,” John Catsimatidis told @bethreinhard.bsky.social. “I worry about America and the way of life we have.”
www.washingtonpost.com/politics/int...
Reposted by Sarah Hörst
The partisan divide has grown, too. The wealthiest 100 tended to give more to Republicans than to Democrats before last year. But giving to the GOP spiked in 2024, with *84%* of donations going to back Republicans or conservative PACs.
November 21, 2025 at 2:56 PM
The partisan divide has grown, too. The wealthiest 100 tended to give more to Republicans than to Democrats before last year. But giving to the GOP spiked in 2024, with *84%* of donations going to back Republicans or conservative PACs.
Reposted by Sarah Hörst
If you receive an illegal order, you have a duty to disobey.
This isn’t controversial.
A President calling for the execution of anyone who reminds service members of this oath is showing us why the duty to disobey illegal orders is so important in the first place.
This isn’t controversial.
A President calling for the execution of anyone who reminds service members of this oath is showing us why the duty to disobey illegal orders is so important in the first place.
November 21, 2025 at 12:14 AM
If you receive an illegal order, you have a duty to disobey.
This isn’t controversial.
A President calling for the execution of anyone who reminds service members of this oath is showing us why the duty to disobey illegal orders is so important in the first place.
This isn’t controversial.
A President calling for the execution of anyone who reminds service members of this oath is showing us why the duty to disobey illegal orders is so important in the first place.
Reposted by Sarah Hörst
In between trips carrying water, sometimes one cannot help but step back and look with awe at the fire.
November 21, 2025 at 1:38 AM
In between trips carrying water, sometimes one cannot help but step back and look with awe at the fire.
Reposted by Sarah Hörst
New from me for @science.org: A major planetary science conference will require submitted abstracts to comply with Trump's anti-DEI executive orders.
This conference, LPSC, is a big deal. It's been running since 1970 and is one of the biggest planetary science conferences out there. 🧪🔭
This conference, LPSC, is a big deal. It's been running since 1970 and is one of the biggest planetary science conferences out there. 🧪🔭
‘This is censorship.’ Conference requires abstracts to comply with Trump anti-DEI order
NASA-funded planetary science institute previously scrubbed hundreds of records from its archive
www.science.org
November 20, 2025 at 7:12 PM
New from me for @science.org: A major planetary science conference will require submitted abstracts to comply with Trump's anti-DEI executive orders.
This conference, LPSC, is a big deal. It's been running since 1970 and is one of the biggest planetary science conferences out there. 🧪🔭
This conference, LPSC, is a big deal. It's been running since 1970 and is one of the biggest planetary science conferences out there. 🧪🔭