Prof. Carl E. Fields 💥
@carlnotsagan.github.io
Computational Astrophysicist and Assistant Professor @uarizona.bsky.social & @stewardobservatory.bsky.social. #Forbes30u30, Science 2021. He/Him. carlnotsagan.github.io.
Reposted by Prof. Carl E. Fields 💥
Astro BlueSky:
Be my boss!
Penn State Astro needs a new department head and I need YOUR help to find them.
Who is your ideal department head? Who can maintain a vibrant, collegial, politics-free atmosphere that supports all members (undergrads, grads, staff, all kinds of faculty)?
🧪
Be my boss!
Penn State Astro needs a new department head and I need YOUR help to find them.
Who is your ideal department head? Who can maintain a vibrant, collegial, politics-free atmosphere that supports all members (undergrads, grads, staff, all kinds of faculty)?
🧪
September 30, 2026 at 1:40 PM
Astro BlueSky:
Be my boss!
Penn State Astro needs a new department head and I need YOUR help to find them.
Who is your ideal department head? Who can maintain a vibrant, collegial, politics-free atmosphere that supports all members (undergrads, grads, staff, all kinds of faculty)?
🧪
Be my boss!
Penn State Astro needs a new department head and I need YOUR help to find them.
Who is your ideal department head? Who can maintain a vibrant, collegial, politics-free atmosphere that supports all members (undergrads, grads, staff, all kinds of faculty)?
🧪
Reposted by Prof. Carl E. Fields 💥
Check out this @sciam.bsky.social interview with @toomanyspectra.bsky.social, author of Cloudy with a Chance of Starships, on the Drake equation, the slippery definition of "intelligent life," and our constant search for it: buff.ly/2yrffkp
Where are all the aliens? A new book explores possible answers
Seven Rasmussen, an astrobiologist and author of the new book Cloudy with a Chance of Starships, gives readers a tour of the astonishing science behind modern searches for alien life
buff.ly
September 25, 2026 at 6:02 PM
Check out this @sciam.bsky.social interview with @toomanyspectra.bsky.social, author of Cloudy with a Chance of Starships, on the Drake equation, the slippery definition of "intelligent life," and our constant search for it: buff.ly/2yrffkp
Reposted by Prof. Carl E. Fields 💥
Choose your favorite NSF–DOE Rubin Observatory palette! 🎨✨
Rubin sees a wider range of colors than our eyes do, and when mapped to colors we do see:
🔴 Redder galaxies are farther.
🔵 Blue stars are hotter.
🌈 In the Trifid & Lagoon Nebulae, pink traces hydrogen while blue reveals hot stars.
🔭🧪
Rubin sees a wider range of colors than our eyes do, and when mapped to colors we do see:
🔴 Redder galaxies are farther.
🔵 Blue stars are hotter.
🌈 In the Trifid & Lagoon Nebulae, pink traces hydrogen while blue reveals hot stars.
🔭🧪
September 26, 2026 at 3:15 PM
Choose your favorite NSF–DOE Rubin Observatory palette! 🎨✨
Rubin sees a wider range of colors than our eyes do, and when mapped to colors we do see:
🔴 Redder galaxies are farther.
🔵 Blue stars are hotter.
🌈 In the Trifid & Lagoon Nebulae, pink traces hydrogen while blue reveals hot stars.
🔭🧪
Rubin sees a wider range of colors than our eyes do, and when mapped to colors we do see:
🔴 Redder galaxies are farther.
🔵 Blue stars are hotter.
🌈 In the Trifid & Lagoon Nebulae, pink traces hydrogen while blue reveals hot stars.
🔭🧪
Reposted by Prof. Carl E. Fields 💥
Congrats to CIERA's Adam Miller, named a 2026 NSF-Simonyi Scholar, one of just 24 nationwide! The distinction recognizes contributions to Rubin Observatory's Legacy Survey of Space and Time. bit.ly/3TPxVQY
CIERA's Adam Miller named NSF-Simonyi Scholar
Northwestern University's Center for Interdisciplinary Exploration and Research in Astrophysics member Adam Miller, assistant professor in the Department of Physics and Astronomy, has been named a 202...
bit.ly
September 25, 2026 at 11:15 PM
Congrats to CIERA's Adam Miller, named a 2026 NSF-Simonyi Scholar, one of just 24 nationwide! The distinction recognizes contributions to Rubin Observatory's Legacy Survey of Space and Time. bit.ly/3TPxVQY
Reposted by Prof. Carl E. Fields 💥
🔭 #AAS249 Plenary Speaker: Yao-Yuan Mao (茅耀元)
Assistant Professor at Univ of Utah, Mao studies low-mass galaxies — developing new observational methods to find these faint systems and using them to probe galaxy evolution & the nature of dark matter.
Early reg closes 12 Oct: aas.org/meetings/aas...
Assistant Professor at Univ of Utah, Mao studies low-mass galaxies — developing new observational methods to find these faint systems and using them to probe galaxy evolution & the nature of dark matter.
Early reg closes 12 Oct: aas.org/meetings/aas...
September 18, 2026 at 6:47 PM
🔭 #AAS249 Plenary Speaker: Yao-Yuan Mao (茅耀元)
Assistant Professor at Univ of Utah, Mao studies low-mass galaxies — developing new observational methods to find these faint systems and using them to probe galaxy evolution & the nature of dark matter.
Early reg closes 12 Oct: aas.org/meetings/aas...
Assistant Professor at Univ of Utah, Mao studies low-mass galaxies — developing new observational methods to find these faint systems and using them to probe galaxy evolution & the nature of dark matter.
Early reg closes 12 Oct: aas.org/meetings/aas...
Reposted by Prof. Carl E. Fields 💥
*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 Prof. Carl E. Fields 💥
📣 We're looking for the next fellows in Space Science!
The 2026 deadline for the #ESAResearchFellowship in Space Science Programme is fast approaching.
Apply until 21 September here 👉 jobs.esa.int/job/Villanue...
Details 👉 www.cosmos.esa.int/web/space-sc...
🔭 🧪 ☄️
The 2026 deadline for the #ESAResearchFellowship in Space Science Programme is fast approaching.
Apply until 21 September here 👉 jobs.esa.int/job/Villanue...
Details 👉 www.cosmos.esa.int/web/space-sc...
🔭 🧪 ☄️
September 16, 2026 at 6:44 AM
📣 We're looking for the next fellows in Space Science!
The 2026 deadline for the #ESAResearchFellowship in Space Science Programme is fast approaching.
Apply until 21 September here 👉 jobs.esa.int/job/Villanue...
Details 👉 www.cosmos.esa.int/web/space-sc...
🔭 🧪 ☄️
The 2026 deadline for the #ESAResearchFellowship in Space Science Programme is fast approaching.
Apply until 21 September here 👉 jobs.esa.int/job/Villanue...
Details 👉 www.cosmos.esa.int/web/space-sc...
🔭 🧪 ☄️
Reposted by Prof. Carl E. Fields 💥
Congratulations to Emily Levesque on becoming the new AAS journals editor-in-chief!
Emily succeeds Ethan Vishniac, who is awesome and did a wonderful job.
Emily is also awesome and I'm sure will also do a wonderful job! Great choices by AAS!
aas.org/press/emily-...
Emily succeeds Ethan Vishniac, who is awesome and did a wonderful job.
Emily is also awesome and I'm sure will also do a wonderful job! Great choices by AAS!
aas.org/press/emily-...
Emily Levesque Named Next Editor in Chief of AAS Journals | American Astronomical Society
Emily Levesque (University of Washington) has been named the next Editor in Chief of the prestigious suite of AAS journals, beginning her term in August 2027.
aas.org
September 15, 2026 at 12:18 AM
Congratulations to Emily Levesque on becoming the new AAS journals editor-in-chief!
Emily succeeds Ethan Vishniac, who is awesome and did a wonderful job.
Emily is also awesome and I'm sure will also do a wonderful job! Great choices by AAS!
aas.org/press/emily-...
Emily succeeds Ethan Vishniac, who is awesome and did a wonderful job.
Emily is also awesome and I'm sure will also do a wonderful job! Great choices by AAS!
aas.org/press/emily-...
Reposted by Prof. Carl E. Fields 💥
There’s a nice comparison between ESA’s Euclid and NASA’s Roman here:
August 30, 2026 at 12:01 PM
There’s a nice comparison between ESA’s Euclid and NASA’s Roman here:
first day of class for me. teaching undergrad stellar astro again! was great to meet all of our incredible seniors who will likely be applying to your programs for next year! you can be certain they will know how to use MESA! 💥
August 26, 2026 at 12:47 AM
first day of class for me. teaching undergrad stellar astro again! was great to meet all of our incredible seniors who will likely be applying to your programs for next year! you can be certain they will know how to use MESA! 💥
Reposted by Prof. Carl E. Fields 💥
A government actively (and not just passively) against science and scientists is producing predictable results in the US.
jobs.physicstoday.org/article/phys...
jobs.physicstoday.org/article/phys...
Briefing: Physics PhDs Are Leaving the US at a Record-high Rate | Physics Today Jobs
Briefing: Physics PhDs Are Leaving the US at a Record-high Rate - read this article along with other careers information, tips and advice on Physics Today Jobs
jobs.physicstoday.org
August 17, 2026 at 11:03 PM
A government actively (and not just passively) against science and scientists is producing predictable results in the US.
jobs.physicstoday.org/article/phys...
jobs.physicstoday.org/article/phys...
Reposted by Prof. Carl E. Fields 💥
Congratulations to our Undergraduate and Graduate Research Showcase winners and thank you to everyone who participated this year 😊😊
August 10, 2026 at 7:29 PM
Congratulations to our Undergraduate and Graduate Research Showcase winners and thank you to everyone who participated this year 😊😊
Reposted by Prof. Carl E. Fields 💥
NEW: A lot of bad has happened to American science over the last year but nothing comes even close to what’s about to happen if we don’t speak out in opposition to the OMB rule changes and I hope @aaas-socsci.bsky.social @apsphysics.bsky.social and others will launch public campaigns about this. 🧪🔭⚛️
It's the End of American Science As We Know It
We have 45 days to express our opposition to catastrophic changes.
news.chanda.science
May 29, 2026 at 6:00 PM
NEW: A lot of bad has happened to American science over the last year but nothing comes even close to what’s about to happen if we don’t speak out in opposition to the OMB rule changes and I hope @aaas-socsci.bsky.social @apsphysics.bsky.social and others will launch public campaigns about this. 🧪🔭⚛️
Reposted by Prof. Carl E. Fields 💥
🧵 Public science in the US has taken some heavy hits over the last year, but the White House OMB is proposing a series of changes that will result in a TKO for science as we know it unless we fight back. Here's what's happening, and why it matters. 1/n
May 29, 2026 at 7:04 PM
🧵 Public science in the US has taken some heavy hits over the last year, but the White House OMB is proposing a series of changes that will result in a TKO for science as we know it unless we fight back. Here's what's happening, and why it matters. 1/n
Reposted by Prof. Carl E. Fields 💥
We need you to help classify shapes and features of galaxies detected by NSF–DOE Rubin Observatory! 🔭🧪
Join Rubin scientists and the @galaxyzoo.org team on @zooniverse.bsky.social in the new citizen science project, Galaxy Zoo: Rubin 🌌
www.zooniverse.org/projects/zoo...
Join Rubin scientists and the @galaxyzoo.org team on @zooniverse.bsky.social in the new citizen science project, Galaxy Zoo: Rubin 🌌
www.zooniverse.org/projects/zoo...
May 19, 2026 at 12:52 AM
We need you to help classify shapes and features of galaxies detected by NSF–DOE Rubin Observatory! 🔭🧪
Join Rubin scientists and the @galaxyzoo.org team on @zooniverse.bsky.social in the new citizen science project, Galaxy Zoo: Rubin 🌌
www.zooniverse.org/projects/zoo...
Join Rubin scientists and the @galaxyzoo.org team on @zooniverse.bsky.social in the new citizen science project, Galaxy Zoo: Rubin 🌌
www.zooniverse.org/projects/zoo...
Reposted by Prof. Carl E. Fields 💥
While we're talking percentages, let's talk about the proposed cuts to NASA's science budget.
NASA is currently 0.36% of US federal spending. www.planetary.org/space-policy...
The proposed budget cuts NASA science by 47%.
NASA science is already on a shoestring, and that string is about to break
NASA is currently 0.36% of US federal spending. www.planetary.org/space-policy...
The proposed budget cuts NASA science by 47%.
NASA science is already on a shoestring, and that string is about to break
Your Guide to NASA's Budget
How big is NASA's budget right now? What was it like in the past? How does it compare to the rest of government spending? These answers, as well as…
www.planetary.org
April 23, 2026 at 1:50 AM
While we're talking percentages, let's talk about the proposed cuts to NASA's science budget.
NASA is currently 0.36% of US federal spending. www.planetary.org/space-policy...
The proposed budget cuts NASA science by 47%.
NASA science is already on a shoestring, and that string is about to break
NASA is currently 0.36% of US federal spending. www.planetary.org/space-policy...
The proposed budget cuts NASA science by 47%.
NASA science is already on a shoestring, and that string is about to break
Reposted by Prof. Carl E. Fields 💥
THE EDGE OF SPACE-TIME DEBUTED AT #9 ON THE INDIE BESTSELLER LIST!!!!!!!!! AHHHHHHHH!!!!!
What I love most about this is that it means people are supporting indie bookstores ♥️♥️♥️♥️♥️♥️
www.bookweb.org/sites/defaul...
What I love most about this is that it means people are supporting indie bookstores ♥️♥️♥️♥️♥️♥️
www.bookweb.org/sites/defaul...
April 16, 2026 at 12:36 AM
THE EDGE OF SPACE-TIME DEBUTED AT #9 ON THE INDIE BESTSELLER LIST!!!!!!!!! AHHHHHHHH!!!!!
What I love most about this is that it means people are supporting indie bookstores ♥️♥️♥️♥️♥️♥️
www.bookweb.org/sites/defaul...
What I love most about this is that it means people are supporting indie bookstores ♥️♥️♥️♥️♥️♥️
www.bookweb.org/sites/defaul...
Reposted by Prof. Carl E. Fields 💥
Members of the AAS & the American Association of Physics Teachers are on the Hill today to advocate for science and STEM education funding! Join them by requesting a meeting with your local congressional office: aas.org/posts/news/2... #WeekofAction #SaveScience 🔭
April 15, 2026 at 1:45 PM
Members of the AAS & the American Association of Physics Teachers are on the Hill today to advocate for science and STEM education funding! Join them by requesting a meeting with your local congressional office: aas.org/posts/news/2... #WeekofAction #SaveScience 🔭
Reposted by Prof. Carl E. Fields 💥
The Annie Jump Cannon Award is presented for outstanding research & promise for future research by a postdoctoral woman researcher. Know someone deserving? Submit nominations by 30 June (self-noms allowed). aas.org/grants-and-p... 🔭
📷 AAS President Dara Norman & 2025 winner Maya Fishbach
📷 AAS President Dara Norman & 2025 winner Maya Fishbach
April 14, 2026 at 2:28 PM
The Annie Jump Cannon Award is presented for outstanding research & promise for future research by a postdoctoral woman researcher. Know someone deserving? Submit nominations by 30 June (self-noms allowed). aas.org/grants-and-p... 🔭
📷 AAS President Dara Norman & 2025 winner Maya Fishbach
📷 AAS President Dara Norman & 2025 winner Maya Fishbach
Reposted by Prof. Carl E. Fields 💥
Outstanding itemization of how the FY27 budget request for NASA, NSF, and DOE impacts astronomy by the @aas.org Policy Team, Colin Hamill and Roohi Dalal 🔭🧪: aas.org/posts/news/2...
April 9, 2026 at 10:48 PM
Outstanding itemization of how the FY27 budget request for NASA, NSF, and DOE impacts astronomy by the @aas.org Policy Team, Colin Hamill and Roohi Dalal 🔭🧪: aas.org/posts/news/2...
Reposted by Prof. Carl E. Fields 💥
The President's Budget Request proposes a 47% cut to NASA Science, a 55% cut to NSF, and a 13% cut to the DOE Office of Science. AAS President Dr. Dara Norman sent a call to action to AAS members via email today. Urge your members of Congress to reject these cuts now! aas.org/reject-2027-...
April 3, 2026 at 4:07 PM
The President's Budget Request proposes a 47% cut to NASA Science, a 55% cut to NSF, and a 13% cut to the DOE Office of Science. AAS President Dr. Dara Norman sent a call to action to AAS members via email today. Urge your members of Congress to reject these cuts now! aas.org/reject-2027-...
Reposted by Prof. Carl E. Fields 💥
More context on this #Artemis II image:
* This is the night side, lit by moonlight. You can see city lights in Spain & Portugal, & a sliver of day at lower right
* The Sun is entirely behind Earth, which makes it a kind of solar eclipse, but w/ Earth doing the eclipsing instead of the Moon:
☀️🌍🚀🌕
* This is the night side, lit by moonlight. You can see city lights in Spain & Portugal, & a sliver of day at lower right
* The Sun is entirely behind Earth, which makes it a kind of solar eclipse, but w/ Earth doing the eclipsing instead of the Moon:
☀️🌍🚀🌕
April 3, 2026 at 3:54 PM
More context on this #Artemis II image:
* This is the night side, lit by moonlight. You can see city lights in Spain & Portugal, & a sliver of day at lower right
* The Sun is entirely behind Earth, which makes it a kind of solar eclipse, but w/ Earth doing the eclipsing instead of the Moon:
☀️🌍🚀🌕
* This is the night side, lit by moonlight. You can see city lights in Spain & Portugal, & a sliver of day at lower right
* The Sun is entirely behind Earth, which makes it a kind of solar eclipse, but w/ Earth doing the eclipsing instead of the Moon:
☀️🌍🚀🌕
Reposted by Prof. Carl E. Fields 💥
If all goes according to plan, in a few hours, a crew of astronauts will begin a journey that will take them on a loop around the moon. Here's a video that NASA put together to help people visualize the journey through space, first orbiting the earth before looping around the moon and flying home 🔭
April 1, 2026 at 4:19 PM
If all goes according to plan, in a few hours, a crew of astronauts will begin a journey that will take them on a loop around the moon. Here's a video that NASA put together to help people visualize the journey through space, first orbiting the earth before looping around the moon and flying home 🔭
Reposted by Prof. Carl E. Fields 💥
Among the firsts of Artemis II, it will be the first time a person of color and Black astronaut (Victor Glover), first woman astronaut (Christina Koch), and first Canadian and non-US citizen astronaut (Jeremy Hansen) travel beyond low Earth orbit and to the Moon. 🚀
April 1, 2026 at 1:10 PM
Among the firsts of Artemis II, it will be the first time a person of color and Black astronaut (Victor Glover), first woman astronaut (Christina Koch), and first Canadian and non-US citizen astronaut (Jeremy Hansen) travel beyond low Earth orbit and to the Moon. 🚀