John Debes
@johndebes.bsky.social
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ESA/AURA astronomer at STScI. Opinions my own. I study exoplanets and disks around stars.
pinned post!
I cracked 1000 followers on Blusky recently and excited to talk to folks about astronomy, exoplanets, being kind to your community, and of course furbabies
10 months ago
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1 day ago
Government funding bill cuts food safety regulations. See the provisions for yourself
www.snopes.com/fact-check/g...
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Government funding bill cuts food safety regulations. See the provisions for yourself
The bill prohibited the FDA from enforcing regulations aimed at increasing traceability of the supply chain, among other rules.
https://www.snopes.com/fact-check/government-shutdown-food-safety-cuts/
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Britt Lundgren
3 days ago
"According to project scientists working on NASA's next generation Nancy Grace Roman Space Telescope.. they were given only four days to empty a mission-critical laboratory."
www.space.com/space-explor...
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'This all must end now.' NASA lab closures at Goddard Space Flight Center under Congressional scrutiny
A congressional letter is putting NASA on blast.
https://www.space.com/space-exploration/this-all-must-end-now-nasa-lab-closures-at-goddard-space-flight-center-under-congressional-scrutiny
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European Space Agency
2 days ago
#3IATLAS
update: we've just pinpointed the comet's path with 10 times more accuracy, using data from our
#ExoMars
Trace Gas Orbiter spacecraft. 😎🧪🔭
www.esa.int/Space_Safety...
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Not by passive aggressively reposting articles…right? 🙃
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2 days ago
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Britt Lundgren
3 days ago
www.rockrivercurrent.com/2025/11/rock...
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Rockford Peach Helen 'Sis Waddell' Wyatt, who won a title with the team, dies at 95
By Kevin Haas Rock River Current Get our mobile app ROCKFORD — Helen 'Sis Waddell' Wyatt, a former Rockford Peach
https://www.rockrivercurrent.com/2025/11/rockford-peach-helen-sis-waddell-wyatt-who-won-a-title-with-the-team-dies-at-95/?fbclid=IwY2xjawODctBleHRuA2FlbQIxMQBzcnRjBmFwcF9pZAwzNTA2ODU1MzE3MjgAAR7ZZaafchNED3WpDpufSr-WhMg2GL3vH1XBPnvXoxZYqtTaL1_62OSk4EbCTw_aem_pv5OjRZ3EOf4Br51w31aCQ
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Space Telescope Science Institute
3 days ago
Get excited about the future of STEM with an afternoon full of future-focused hands-on discovery at the Maryland Science Center in Baltimore. STScI staff will deliver
#NASAWebb
and Roman telescope science content during the “Invent the Future” event on Saturday, November 15. 🔭 🧪
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Invent the Future | Maryland Science Center
Get excited about the future of STEM with an afternoon full of future-focused hands-on discovery.
https://www.mdsci.org/events/invent-the-future/
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European Space Agency
4 days ago
🆕 Astronomers have wanted to spot a 'coronal mass ejection', or CME, on a star other than our own for decades. And now they have! 👇
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Space Telescope Science Institute
4 days ago
“This record-breaking response reflects Webb’s exceptional performance and unprecedented capacity to inspire the scientific community and to transform our understanding of the universe,” said STScI Director Jen Lotz. 🔭 ☄️
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Heidi B. Hammel
4 days ago
JWST's recent Cycle 5 call garnered 2,935 proposals (requests to use this amazing telescope and its data 🔭), breaking the record that it set last year! The proposals represent 7,509 unique investigators over a range of career stages, and come from institutions in 59 countries and 47 U.S. states!
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The corrupt elites absolutely suck at writing comprehensible emails with good structure.
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4 days ago
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Chanda Prescod-Weinstein 🌌
4 days ago
Obscene in every way
theintercept.com/2025/11/11/c...
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Trump’s Military Occupations of U.S. Cities Cost $473 Million and Rising
Trump’s campaign to quell dissent by deploying the American military to U.S. cities comes at an immense price.
https://theintercept.com/2025/11/11/cost-trump-national-guard-military-occupation/?utm_content=buffer0e59f&utm_medium=social&utm_source=instagram&utm_campaign=theintercept
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Matthew Kenworthy
4 days ago
‘An Overview of Exocomets’
is a very comprehensive review led by Daniela Iglesias started at an
@issibern.ch
meeting. I worked on Figure 1 detailing comets around the Sun, Beta Pic and a white dwarf - I’m very proud of it, and it is available on
@github.com
:
Exocomet systems
#astrodon
#exoplanet
☄
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Sam Levin
5 days ago
NEW: The US has deported a longtime Oregon firefighter who was arrested by Border Patrol while deployed at a major wildfire in Washington state. José Bertin Cruz-Estrada, separated from his family, is speaking out from Mexico for the first time: “I feel betrayed ... What am I going to do now?"
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US firefighter detained on the job speaks out after deportation: ‘I feel betrayed’
Exclusive: Border patrol arrested José Bertin Cruz-Estrada while he was battling a wildfire in Washington. He is now in Mexico, separated from his family in Oregon
https://www.theguardian.com/us-news/2025/nov/11/washington-firefighter-deported-mexico
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Mike Boylan-Kolchin
4 days ago
A little less than a year ago, a large team of cosmologists reported evidence that dark energy (which drives the acceleration of the expansion of the Universe) evolves over time. This made a huge splash but has also been viewed with healthy skepticism. Today they report that evidence has weakened. 🧪
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The Dark Energy Survey Supernova Program: A Reanalysis Of Cosmology Results And Evidence For Evolving Dark Energy With An Updated Type Ia Supernova Calibration
We present improved cosmological constraints from a re-analysis of the Dark Energy Survey (DES) 5-year sample of Type Ia supernovae (DES-SN5YR). This re-analysis includes an improved photometric cross...
https://arxiv.org/abs/2511.07517
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European Space Agency
5 days ago
🌊 Why launch another sea-level satellite? To build resilience, we need to know how sea level is changing, and why. Satellites such as
#Copernicus
Sentinel-6B, set to launch on 17 November, are helping us uncover what’s driving sea-level change.
www.esa.int/Applications...
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Senator Bernie Sanders
7 days ago
Tonight was a very bad night.
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NPR
6 days ago
The pardons include 77 allies tied to efforts to overturn the 2020 election, including Rudy Giuliani, former White House Chief of Staff Mark Meadows, and former Trump attorney Sidney Powell.
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Trump grants pardons to Giuliani, Meadows, others linked to 2020 election efforts
The pardons include 77 allies tied to efforts to overturn the 2020 election, including Rudy Giuliani, former White House Chief of Staff Mark Meadows, and former Trump attorney Sidney Powell.
https://n.pr/47B3qm4
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Alex Plante 🐀👑
8 days ago
was watchin LD while doing market prep earlier and i’ll be honest… idk if there’s any other character dynamic that i adore and understand deep down to my very soul more than “feral ernie and bert”
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The Daily Show
9 days ago
New York millionaires: threatening to flee the city since 2009
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A little sneak peak from the MEAD survey of white dwarfs within 25 pc using MIRI 10 and 15 micron imaging filters. Visit 101 of the survey captured images of EGGR 199, which is just 16pc away. No planets down to 3 Mjup found nearby the white dwarf! (1/2)
#astrosci
🔭
9 days ago
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Daniel Pomarède
10 days ago
in the
#arXiv
The SPHEREx Satellite Mission by James Bock and co-authors
arxiv.org/abs/2511.02985
#SPHEREx
#Cosmology
🧪
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😵😵😵
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10 days ago
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Brett Morris
11 days ago
As feds seal off labs from staff at NASA Goddard in prep for hasty evac+demolition, union reports: “Closure activities are proceeding during the government shutdown, which may be illegal under the Antideficiency Act and further endangers property.” 🔭🧪
www.gesta-goddard.org/blog/gestas-...
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GESTA’s Summary of Goddard Building Closures Status
NASA Goddard Space Flight Center is the largest group of scientists, technicians and engineers in the US who develop Earth and space science flight missions. Below is GESTA's understanding of the...
https://www.gesta-goddard.org/blog/gestas-summary-of-goddard-building-closures-status
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Melina Thévenot🏳️⚧️
10 days ago
Beautiful bow shock nebula. I did not know that Cataclysmic variable stars could produce bow shocks. This one was also discovered with the help of amateur astronomers.
#amateurastronomy
🔭 I updated the wikipedia article about bow shocks:
en.wikipedia.org/wiki/Bow_shock
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Yes, please! Or the people can start showing up to Dem meetings and advocating for this directly! Go from voter to activist! Make things better!
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11 days ago
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Space Telescope Science Institute
12 days ago
In 2023,
#NASAWebb
observed a spectacular light show on Jupiter, the largest planet in our solar system. The planet’s auroras are hundreds of times brighter and more energetic than Earth’s. Credit: NASA, ESA, CSA, J. Nichols (University of Leicester), M. Zamani (ESA/Webb). 🔭 🧪
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Shannon Hale
12 days ago
More info about Marta Leiva, the woman I witnessed being assaulted by plainclothed men in the SLC airport last week. She has a work permit legal through 2029, mom of 4 with sick kids:
www.ksl.com/article/5139...
You can donate to her gofundme for legal expenses:
www.gofundme.com/f/apoya-madr...
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A little over 23 years ago, I wrote my first paper on white dwarf planetary systems and not only am I fortunate enough to still be able to go looking for them with JWST, that little paper (which almost got rejected) hit 400 citations
#astrosci
#exoplanets
12 days ago
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NPR
15 days ago
Immigration enforcement officers are sometimes forgoing license plates or otherwise masking their cars while apprehending migrants across the U.S.
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Camouflaging cars and swapping license plates: How agents make immigration arrests
Immigration enforcement officers are sometimes forgoing license plates or otherwise masking their cars while apprehending migrants across the U.S.
https://n.pr/3LdqXRe
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Laura Lopez
15 days ago
I gave a presentation at
@sacnas.bsky.social
on "archival astrophysics" in a session "Astronomy on the Cheap", showing tips on pursuing research using only archival data. Here are my slides, which include examples of different public archives & how to use them! 🔭
drive.google.com/file/d/1mw42...
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Indivisible ❌👑
16 days ago
As health insurance premiums are set to double for millions of Americans and 42 million working families face losing the benefits that keep them fed, the No Kings Alliance is organizing to provide mutual aid and care for our communities. Please join us this weekend:
www.mobilize.us/nokings/c/no...
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Mutual Aid
No Kings Alliance - Mutual Aid Table of Contents Find a Local Mutual Aid Group Do’s and Dont’s of Mutual Aid Common Items in Need Starting Your Own Project Create a donation drive for a local mutual ...
https://docs.google.com/document/d/1IYohpjDgaqlLZ0YHhnBecE-s3LkJ6VJr3_bea_ReG3c/view
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Space Telescope Science Institute
17 days ago
Check out some of the great costumes worn by Space Telescope Science Institute staff as they celebrate Halloween. 🎃
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Britt Lundgren
18 days ago
I know there's a lot going on, but the NC state employee health plan premium just tripled for 2026.
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Sometimes being an astronomer is hard. In those moments I’ll reach into my desk for something that cheers me up. After I find that thing I also will look at my vintage
@alyankovic.bsky.social
tape
18 days ago
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Phil Plait
18 days ago
This is an extremely important point. Every bit of anti-science BS erodes the public's ability to discern fact from fiction. And now we have anti-vaxxers and climate science deniers and more running the government.
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Marc Kuchner | Author
19 days ago
Congrats to NASA Citizen Scientist
@melina-iras07572.bsky.social
! In 2019, Melina discovered the oldest white dwarf with a debris disk. Now this white dwarf is in the news again.
@astroerika.bsky.social
et al. suggest it may have recently engulfed a rocky planet.
iopscience.iop.org/article/10.3...
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To ensure we keep this website safe, please can you confirm you are a human by ticking the box below.
https://iopscience.iop.org/article/10.3847/1538-4357/ae0ace
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NPR
23 days ago
Roughly 1.4 million federal workers are going without pay due to the government shutdown. About half of them are furloughed, while the other half has been deemed essential and is working without pay.
n.pr/4ngKyx3
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It's supposed to be payday for many federal workers. Instead, they're getting nothing
Roughly 1.4 million federal workers are going without pay due to the government shutdown. About half of them are furloughed, while the other half has been deemed essential and is working without pay.
https://n.pr/4ngKyx3
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Space Telescope Science Institute
24 days ago
A dead star has been spotted ripping a planet apart! “Something clearly disturbed this system long after the star’s death,” said co-investigator John Debes of the Space Telescope Science Institute. (1/4) 🔭 🧪 🧵
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Christine Pulliam
24 days ago
Munch, munch, munch! This white dwarf is snacking on one of its ex-planets.
www.stsci.edu/contents/new...
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Aging White Dwarf Still Consuming Its Planetary System
https://www.stsci.edu/contents/news-releases/2025/news-2025-404
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Emily Hunt
24 days ago
For anyone applying to grad school in the US this fall, the
@aas.org
has made a working group to monitor which programs have faced cuts - this spreadsheet contains all the info: 🔭☄️
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US Astronomy Graduate Admissions, AY 2025-2026
https://docs.google.com/spreadsheets/d/1n4ZCoZpJ44TlD_jnQFlCJ5d4PXVYh36ce6ZQiCoVo_E/edit?gid=0#gid=0
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Corey S. Powell
25 days ago
Astronomers have determined that an elderly white dwarf star, 3 billion years into its final stage of life, is still busily crushing and devouring its planets. Scientific data on the left. Artist's interpretation on the right. 🧪🔭
keckobservatory.org/white-dwarf/
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Érika Le Bourdais
25 days ago
Want to know more about my recent paper about this cool geriatric white dwarf eating its planets? 🤩 It’s all detailed in this news article by
@stsci.edu
! 🔭
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The Associated Press
25 days ago
In less than two months, President Donald Trump and Defense Secretary Pete Hegseth say the U.S. military has killed 32 people in strikes against drug-smuggling vessels in the Caribbean Sea. Here is a timeline of the U.S. military actions and the concerns among some lawmakers.
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A timeline of US attacks in the Caribbean and what Congress has had to say
In less than two months, President Donald Trump and Defense Secretary Pete Hegseth say the U.S. military has killed 32 people in strikes against drug-smuggling vessels in the Caribbean Sea.
https://bit.ly/3J8ymR9
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Aaron Rupar
26 days ago
Raskin details how he tried to get unanimous consent today to force Johnson to swear in Adelita Grijalva, but the Acting Speaker Haridopolos "scurried out of the room"
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Bruce Macintosh
27 days ago
Now with proper link! Inspiring people with science is a major part of UC Observatories' mission. We have an opening for a support astronomer at Lick Observatory to both support science and also to lead our amazing mountain-top public programming.
aas.org/jobregister/...
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Support Astronomer for Lick Observatory | American Astronomical Society
The University of California Observatories (UCO) at UC Santa Cruz seeks a Support Astronomer for Lick Observatory on Mt. Hamilton. UCO operates Lick and partners with Keck and TMT; this role ensures w...
https://aas.org/jobregister/ad/0cc5c549
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Who robbed the Louvre? Right answers only
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28 days ago
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Jackie Barrientes
28 days ago
In case you want to see something besides a dumb AI video, here's my boyfriend at Baltimore Comic Con yesterday. It took him 18 months to build this entire Medieval Spawn cosplay from a lot of foam and a little filament. And he took him 2nd place in the intermediate level!
#BaltimoreComicCon
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Karl Jacoby
29 days ago
Proud papa moment: my son J published a letter in the
@nytimes.com
today (in print tomorrow) on the need to think our definitions of autism.
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Blue Texas
29 days ago
No Kings-Chicago, IL
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Aaron Reichlin-Melnick
about 1 month ago
WHOA. The AP reports that in the latest strike on a boat alleged to be carrying drug smugglers (which has never been proven), there were actually survivors, and they've been rescued. The Pentagon has yet to formally acknowledge they have survivors in custody.
apnews.com/article/vene...
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US has seized survivors after strike on suspected drug-carrying vessel in Caribbean, AP sources say
The U.S. has seized survivors after a strike on a suspected drug-carrying vessel in the Caribbean, the first since President Donald Trump began launching deadly attacks in the region this summer.
https://apnews.com/article/venezuela-drug-smuggling-pentagon-strike-12820c173da3de80c1a7a559c252c743?taid=68f265bce79c550001824390&utm_campaign=TrueAnthem&utm_medium=AP&utm_source=Twitter
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