Channon Visscher
@cvisscher.bsky.social
Professor of Chemistry & Planetary Sciences at Dordt University (IA) and Research Scientist with the Space Science Institute (CO)
Github: https://cvisscher.github.io/
Github: https://cvisscher.github.io/
Reposted by Channon Visscher
*8* postdoctoral positions in atmospheric physics, from the Earth to Exoplanets:
aas.org/jobregister/...
This is part of the Multiscale Physics of Clouds Across Planetary Atmospheres collaboration, funded by the Simons Foundation, led by Prof. @astrocaroline.bsky.social!
aas.org/jobregister/...
This is part of the Multiscale Physics of Clouds Across Planetary Atmospheres collaboration, funded by the Simons Foundation, led by Prof. @astrocaroline.bsky.social!
Postdoctoral Researchers — Multiscale Physics of Clouds Across Planetary Atmospheres | American Astronomical Society
The Multiscale Physics of Clouds Across Planetary Atmospheres collaboration, funded by the Simons Foundation, is seeking 8 postdoctoral researchers to develop new approaches to understanding clouds ac...
aas.org
September 18, 2026 at 6:49 PM
*8* postdoctoral positions in atmospheric physics, from the Earth to Exoplanets:
aas.org/jobregister/...
This is part of the Multiscale Physics of Clouds Across Planetary Atmospheres collaboration, funded by the Simons Foundation, led by Prof. @astrocaroline.bsky.social!
aas.org/jobregister/...
This is part of the Multiscale Physics of Clouds Across Planetary Atmospheres collaboration, funded by the Simons Foundation, led by Prof. @astrocaroline.bsky.social!
Reposted by Channon Visscher
rip annie dillard
September 16, 2026 at 3:29 PM
rip annie dillard
Reposted by Channon Visscher
August 26, 2026 at 3:13 PM
Reposted by Channon Visscher
Got a good job down at the Data Center. I work on the line, and it's hard work but it's honest and the wage is fair; my family and I are grateful for it. I rivet the word "absolutely" onto the little apologies that chatbots do when they misunderstand a prompt.
Hassett: "Data centers are very good for towns bc they create so many jobs & bring people in with high incomes that can buy houses & stuff like that. So if you take a sleepy town that hasn't seen much in the last 30 years & put a data center there, there are gonna be a bunch of happy residents."
July 31, 2026 at 3:01 PM
Got a good job down at the Data Center. I work on the line, and it's hard work but it's honest and the wage is fair; my family and I are grateful for it. I rivet the word "absolutely" onto the little apologies that chatbots do when they misunderstand a prompt.
Reposted by Channon Visscher
🔭 New paper day! 🪐
This time from Merle Schrader, a PhD student in the brown dwarf group at Trinity College Dublin. Today, they're publishing a fresh look at SIMP-0136, using principal component analysis, identifying the mechanisms driving its atmospheric variability.
arxiv.org/abs/2607.26182
This time from Merle Schrader, a PhD student in the brown dwarf group at Trinity College Dublin. Today, they're publishing a fresh look at SIMP-0136, using principal component analysis, identifying the mechanisms driving its atmospheric variability.
arxiv.org/abs/2607.26182
The JWST weather report: Unravelling the atmospheric variability of isolated worlds using principal component analysis
Brown dwarf variability directly probes atmospheric dynamics beyond the Solar System, and recent JWST time-resolved spectroscopy has opened a new window into these processes. Principal component analy...
arxiv.org
July 30, 2026 at 5:38 AM
🔭 New paper day! 🪐
This time from Merle Schrader, a PhD student in the brown dwarf group at Trinity College Dublin. Today, they're publishing a fresh look at SIMP-0136, using principal component analysis, identifying the mechanisms driving its atmospheric variability.
arxiv.org/abs/2607.26182
This time from Merle Schrader, a PhD student in the brown dwarf group at Trinity College Dublin. Today, they're publishing a fresh look at SIMP-0136, using principal component analysis, identifying the mechanisms driving its atmospheric variability.
arxiv.org/abs/2607.26182
Modest Mouse
What band or artist do all your music tastes suggests that you probably should like and yet you don't. Me
Plastic People of The Universe.
Chet Baker.
Plastic People of The Universe.
Chet Baker.
July 15, 2026 at 12:16 AM
Modest Mouse
Reposted by Channon Visscher
Holy COW. Text analysis of comments on the OMB rule: overwhelming opposition, overwhelmingly not form letters. (But 9 in 10 comments supporting the rule ARE form responses, LOL)
Whatever happens next, folks have stepped up.
Whatever happens next, folks have stepped up.
July 13, 2026 at 8:14 PM
Holy COW. Text analysis of comments on the OMB rule: overwhelming opposition, overwhelmingly not form letters. (But 9 in 10 comments supporting the rule ARE form responses, LOL)
Whatever happens next, folks have stepped up.
Whatever happens next, folks have stepped up.
The Federal OMB has proposed a sweeping set of rule changes for research grants: *changes that would be harmful to scientific research* If you'd like to speak out, they are still accepting comments on the proposed changes until July 13: www.federalregister.gov/documents/20...
Regulation for Federal Financial Assistance
The Office of Management and Budget (OMB) proposes to revise the Guidance for Federal Financial Assistance to improve government- wide policies and requirements related to the management of grants, co...
www.federalregister.gov
July 1, 2026 at 6:06 PM
The Federal OMB has proposed a sweeping set of rule changes for research grants: *changes that would be harmful to scientific research* If you'd like to speak out, they are still accepting comments on the proposed changes until July 13: www.federalregister.gov/documents/20...
Reposted by Channon Visscher
This is exactly it. The work is the point.
June 8, 2026 at 4:10 PM
This is exactly it. The work is the point.
I don’t have strong feelings about it but personally prefer a geophysical definition of a planet, which would include Pluto
But I do think that if a reporter asks about Pluto, you should immediately mention how NASA funding & our ability to study interesting objects like Pluto is under dire threat
But I do think that if a reporter asks about Pluto, you should immediately mention how NASA funding & our ability to study interesting objects like Pluto is under dire threat
April 30, 2026 at 6:37 PM
I don’t have strong feelings about it but personally prefer a geophysical definition of a planet, which would include Pluto
But I do think that if a reporter asks about Pluto, you should immediately mention how NASA funding & our ability to study interesting objects like Pluto is under dire threat
But I do think that if a reporter asks about Pluto, you should immediately mention how NASA funding & our ability to study interesting objects like Pluto is under dire threat
Reposted by Channon Visscher
A model of the early Solar System that cools too quickly to reach chemical equilibrium generates mineral regimes resembling important classes of meteorites
go.nature.com/4sPuG7t
go.nature.com/4sPuG7t
Rapid cooling shaped the formation of the first meteorites in the Solar System
A model of the early Solar System that cools too quickly to reach chemical equilibrium generates mineral regimes resembling important classes of meteorites.
go.nature.com
April 24, 2026 at 3:39 PM
A model of the early Solar System that cools too quickly to reach chemical equilibrium generates mineral regimes resembling important classes of meteorites
go.nature.com/4sPuG7t
go.nature.com/4sPuG7t
Reposted by Channon Visscher
If you’ve been moved & inspired by Artemis, NASA needs your help. Literally during A2, the president proposed cutting NASA science 47%, canceling 54 missions, including many already in-flight. To help stop these cuts, check out @planetarysociety.bsky.social www.planetary.org/save-nasa-sc...
Save NASA Science Action Hub
Updates and actions on the proposed cuts to NASA science in FY 2027.
www.planetary.org
April 11, 2026 at 1:53 AM
If you’ve been moved & inspired by Artemis, NASA needs your help. Literally during A2, the president proposed cutting NASA science 47%, canceling 54 missions, including many already in-flight. To help stop these cuts, check out @planetarysociety.bsky.social www.planetary.org/save-nasa-sc...
Reposted by Channon Visscher
The FY 2027 NASA budget request hides its science cuts by omitting mission names instead of explicitly zeroing them out.
We did the work and found 54 missions cancelled in this proposal.
This is another extinction-level event for NASA science.
Full list: planetary.org/save-nasa-science
We did the work and found 54 missions cancelled in this proposal.
This is another extinction-level event for NASA science.
Full list: planetary.org/save-nasa-science
April 9, 2026 at 2:16 PM
The FY 2027 NASA budget request hides its science cuts by omitting mission names instead of explicitly zeroing them out.
We did the work and found 54 missions cancelled in this proposal.
This is another extinction-level event for NASA science.
Full list: planetary.org/save-nasa-science
We did the work and found 54 missions cancelled in this proposal.
This is another extinction-level event for NASA science.
Full list: planetary.org/save-nasa-science
Reposted by Channon Visscher
This is possibly the most incredible tracking video of a rocket launch that I have ever seen, and Shuttle had some really incredible videos too!
Just look at those gorgeous flame dynamics and then the booster separation... 🔭🧪 #Artemis
Just look at those gorgeous flame dynamics and then the booster separation... 🔭🧪 #Artemis
April 8, 2026 at 9:42 PM
This is possibly the most incredible tracking video of a rocket launch that I have ever seen, and Shuttle had some really incredible videos too!
Just look at those gorgeous flame dynamics and then the booster separation... 🔭🧪 #Artemis
Just look at those gorgeous flame dynamics and then the booster separation... 🔭🧪 #Artemis
Reposted by Channon Visscher
Genuinely just bonkers to watch the USA do this to one of the most successful and innovative hubs of scientific research the world has ever seen. All those years of Free Speech On Campus debates and it turns out they actually wanted less cancer research. Absurd.
March 16, 2026 at 3:57 PM
Genuinely just bonkers to watch the USA do this to one of the most successful and innovative hubs of scientific research the world has ever seen. All those years of Free Speech On Campus debates and it turns out they actually wanted less cancer research. Absurd.
Reposted by Channon Visscher
This is the entire budget of NASA's Planetary Science Division for *four years*
WASHINGTON (AP) — Pentagon tells Congress the first week of the Iran war cost the US $11.3 billion, an AP source says.
March 12, 2026 at 4:04 AM
This is the entire budget of NASA's Planetary Science Division for *four years*
Reposted by Channon Visscher
Americans: we live in a fallen state—embroiled by sin, cheating, lying, and evil. You cannot trust anyone, not even those who claim to know you best
Canadians: I love my neighbors and my friends!
Canadians: I love my neighbors and my friends!
March 5, 2026 at 4:10 PM
Americans: we live in a fallen state—embroiled by sin, cheating, lying, and evil. You cannot trust anyone, not even those who claim to know you best
Canadians: I love my neighbors and my friends!
Canadians: I love my neighbors and my friends!
Reposted by Channon Visscher
Publication day for our paper on the T2.5 brown dwarf/exoplanet analog SIMP0136! We find cloud formation appears to drive upper atmospheric temperature and chemical structure. We also debut a new, novel method for vertical mapping extrasolar atmospheric dynamics.
iopscience.iop.org/article/10.3...
iopscience.iop.org/article/10.3...
Mapping the Cloud-driven Atmospheric Dynamics and Chemistry of an Isolated Exoplanet Analog with Harmonic Signatures
Mapping the Cloud-driven Atmospheric Dynamics and Chemistry of an Isolated Exoplanet Analog with Harmonic Signatures, Plummer, Michael K., Cocchini, Francis P., Kearns, Peter A., McCarthy, Allison M., Artigau, Étienne, Cowan, Nicolas B., Akhmetshyn, Roman, Vos, Johanna M., Nasedkin, Evert, Visscher, Channon, Benneke, Björn, Doyon, René, Metchev, Stanimir A., Rowe, Jason F., Suárez, Genaro
iopscience.iop.org
February 27, 2026 at 2:21 PM
Publication day for our paper on the T2.5 brown dwarf/exoplanet analog SIMP0136! We find cloud formation appears to drive upper atmospheric temperature and chemical structure. We also debut a new, novel method for vertical mapping extrasolar atmospheric dynamics.
iopscience.iop.org/article/10.3...
iopscience.iop.org/article/10.3...
Reposted by Channon Visscher
I present the most interesting graph ever made.
HUMAN ON BICYCLE beats every other living thing.
www.scientificamerican.com/article/a-hu...
HUMAN ON BICYCLE beats every other living thing.
www.scientificamerican.com/article/a-hu...
February 5, 2026 at 5:49 AM
I present the most interesting graph ever made.
HUMAN ON BICYCLE beats every other living thing.
www.scientificamerican.com/article/a-hu...
HUMAN ON BICYCLE beats every other living thing.
www.scientificamerican.com/article/a-hu...
Reposted by Channon Visscher
The US immigrant population generated more in taxes than they received in benefits from all levels of government every year from 1994 to 2023.
The Cato study provides the first-ever 30-year analysis of the fiscal effects of immigration on government budgets.
https://ow.ly/jy8a50Y8kM3
The Cato study provides the first-ever 30-year analysis of the fiscal effects of immigration on government budgets.
https://ow.ly/jy8a50Y8kM3
February 3, 2026 at 5:27 PM
The US immigrant population generated more in taxes than they received in benefits from all levels of government every year from 1994 to 2023.
The Cato study provides the first-ever 30-year analysis of the fiscal effects of immigration on government budgets.
https://ow.ly/jy8a50Y8kM3
The Cato study provides the first-ever 30-year analysis of the fiscal effects of immigration on government budgets.
https://ow.ly/jy8a50Y8kM3
Reposted by Channon Visscher
Great article on the cosmic shoreline. I was fortunate to have an office near Kevin’s for my 20 years at NASA Ames. He is the most creative planetary scientist I know.
How do planetary atmospheres form, and how are they lost? These two questions are carving out a new map of habitable alien realms.
The Road Map to Alien Life Passes Through the ‘Cosmic Shoreline’ | Quanta Magazine
Astronomers are ready to search for the fingerprints of life in faraway planetary atmospheres. But first, they need to know where to look — and that means figuring out which planets are likely to…
www.quantamagazine.org
January 17, 2026 at 4:54 PM
Great article on the cosmic shoreline. I was fortunate to have an office near Kevin’s for my 20 years at NASA Ames. He is the most creative planetary scientist I know.
Reposted by Channon Visscher
They're going to *throw out* one-of-a-kind NASA archives?!
Not even a year since the Inauguration & we're already at the 2nd-time-as-farce version of the burning of the Library of Alexandria.
Not even a year since the Inauguration & we're already at the 2nd-time-as-farce version of the burning of the Library of Alexandria.
December 31, 2025 at 7:55 PM
They're going to *throw out* one-of-a-kind NASA archives?!
Not even a year since the Inauguration & we're already at the 2nd-time-as-farce version of the burning of the Library of Alexandria.
Not even a year since the Inauguration & we're already at the 2nd-time-as-farce version of the burning of the Library of Alexandria.
Reposted by Channon Visscher
This is actually quite brilliant, up to and including the final sentence 🔥
December 1, 2025 at 11:09 AM
This is actually quite brilliant, up to and including the final sentence 🔥
we had spent much of the (chilly) evening in the countryside away from any lights, but my favorite image of the night ended up being the aurora just casually, majestically, filling the sky above our homes
November 12, 2025 at 4:35 PM
we had spent much of the (chilly) evening in the countryside away from any lights, but my favorite image of the night ended up being the aurora just casually, majestically, filling the sky above our homes