Doug Caldwell's Avatar

Doug Caldwell

@dacmess.bsky.social

Astronomer at the SETI Institute <> Exoplanets <> Data-Instrument interfaces <> dogs, cats, horses <> slow trail runner <> banjo?? <> he/him/his

1,096 Followers  |  859 Following  |  181 Posts  |  Joined: 13.03.2024  |  1.5253

Latest posts by dacmess.bsky.social on Bluesky

Deep cut!

06.02.2026 18:05 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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πŸš€ Reminder: The Roman Cycle 1 Call for Proposals is OPEN!

Now’s the time to propose new science with the WFI - data analysis, theory and lab work, and new observations. Check the Late Breaking News section for important updates to the call.

πŸ“… Deadline: Mar 17, 2026 (5 PM PDT)

πŸ“ bit.ly/4q3jbbL

06.02.2026 00:00 β€” πŸ‘ 6    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0

It’s 2026. There is a measles outbreak in the prison for babies

02.02.2026 07:15 β€” πŸ‘ 8508    πŸ” 2683    πŸ’¬ 109    πŸ“Œ 94

Academics vying for a spot in Epsteinβ€˜s world. There are so many. I feel the need to make a thread, so I don’t keep confusing them. 1/

31.01.2026 21:02 β€” πŸ‘ 2889    πŸ” 1412    πŸ’¬ 73    πŸ“Œ 218
Almost full moom filling the image, looking gray and kinda beaten up

Almost full moom filling the image, looking gray and kinda beaten up

Nearly full Moon (31 Jan) in a bright sky in San Jose, California. Taken with a borrowed Unistellar eVscope πŸ”­

01.02.2026 22:27 β€” πŸ‘ 19    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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🚨TONIGHT’S PROTEST IN MINNEAPOLIS IS INSANE:

CNN is STUNNED. Share this widely!

β€œI've covered many protests… I've not seen a crowd like this before.” It’s 8 degrees. β€œIt is freezing, but nothing, nothing is stopping these people.”

This isn’t a rally. It’s a movement. @calltoactivism.bsky.social

31.01.2026 00:59 β€” πŸ‘ 6444    πŸ” 1942    πŸ’¬ 88    πŸ“Œ 77
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Earth-size planet spotted with yearlong orbit Long-overlooked Kepler signal discovered by citizen scientists reveals promising world worth a closer look

New planet just dropped and it

1) is almost exactly Earth-sized

2) has a year that's almost exactly 1 Earth year.

3) orbits a star that is not a πŸ’’temperamental little shit M-dwarf πŸ’’but is instead a 🧑 good orange boi 🧑

Me for @science.org based on results presented at #RockyWorlds4: πŸ”­πŸ§ͺ

28.01.2026 21:42 β€” πŸ‘ 1538    πŸ” 434    πŸ’¬ 50    πŸ“Œ 103

New job opportunity at @stsci.edu: Senior Astronomical Data Scientist for data analysis tools, working closely with my team and me.

This role is very similar to mine. If you have questions, I'm happy to answer them. πŸ§ͺπŸ”­

27.01.2026 21:27 β€” πŸ‘ 22    πŸ” 17    πŸ’¬ 0    πŸ“Œ 1
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Rest in Peace Alex Jeffrey PrettiπŸ™πŸΎ The VA ICU Nurses send him off right πŸ’”

26.01.2026 05:04 β€” πŸ‘ 17692    πŸ” 6844    πŸ’¬ 317    πŸ“Œ 1136

Whatever is in the Epstein Files is so explosive that the leaders of the Department of Justice are openly breaking the law every day to keep us from seeing it. (Just a reminder amongst all the other stuff flying around.)

22.01.2026 15:03 β€” πŸ‘ 24562    πŸ” 8348    πŸ’¬ 658    πŸ“Œ 297

Fortune 500 companies that have contracts with ICE:

-Amazon
-AT&T
-Booz Allen Hamilton
-Caci
-Charter Communications
-Comcast
-Dell
-Ecolab
-FedEx
-General Dynamics
-L3Harris
-Motorola
-Thermo Fisher
-UPS

Know who profits from Trump's cruelty.

18.01.2026 19:00 β€” πŸ‘ 4459    πŸ” 2575    πŸ’¬ 186    πŸ“Œ 161

Baby is thinking β€œwhy are my feet so big and wings so small?”

15.01.2026 18:53 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Head shot of a very hairy brown miniature horse. Mane and forelock cover most of his naught little head

Head shot of a very hairy brown miniature horse. Mane and forelock cover most of his naught little head

Chocolate Chip in full winter coat mode

14.01.2026 17:26 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The Past 3 Years Have Been the Three Hottest on Record - Eos Extreme heat in 2023, 2024, and 2025 indicates a warming spike, a new analysis finds.

2025 was Earth’s 3rd hottest year since record-keeping began. The past 3 years represent a β€œwarming spike” that scientists don’t yet fully understand. πŸ§ͺ

Analyses by @berkeleyearth.org, @noaa.gov, @rhg.com & @climatecentral.org. Comments from @rarohde.bsky.social

eos.org/articles/the...

14.01.2026 17:06 β€” πŸ‘ 15    πŸ” 6    πŸ’¬ 1    πŸ“Œ 0
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2025 was an exceptional year for the Earth's climate
⬆️ Warmest ocean heat content
⬆️ Tied as second warmest surface temps
⬆️ Second warmest troposphere
⬆️ Record high sea level and GHGs
⬇️ Record low winter Arctic ice

New State of the Climate over at Carbon Brief: www.carbonbrief.org/...

14.01.2026 14:53 β€” πŸ‘ 346    πŸ” 222    πŸ’¬ 5    πŸ“Œ 24
Statement by Federal Reserve Chair Jerome H. Powell
YouTube video by Federal Reserve Statement by Federal Reserve Chair Jerome H. Powell

Here is the video message of Federal Reserve Chair Jerome Powell regarding the Justice Department’s criminal investigation related to the Fed’s building renovations.

Watch it.

youtu.be/KckGHaBLSn4

12.01.2026 00:52 β€” πŸ‘ 1837    πŸ” 615    πŸ’¬ 78    πŸ“Œ 53

Yay! Congratulations to you all and godspeed to Pandora

10.01.2026 00:14 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

We've removed the paywall from this guide so everyone can access it. πŸ‘‡ Stay safe.

08.01.2026 18:35 β€” πŸ‘ 14763    πŸ” 10294    πŸ’¬ 102    πŸ“Œ 101
A USPS mailbox in New York City

A USPS mailbox in New York City

USPS quietly changed its postmark rules β€” mail is no longer dated when you drop it off. The β€œofficial” date is when it hits automated sorting β€” sometimes days later

Which could have major implications for mail in voting β€” it’s a clever way to disenfranchise voters that’s going largely overlooked

29.12.2025 19:14 β€” πŸ‘ 7141    πŸ” 4822    πŸ’¬ 293    πŸ“Œ 638
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New study shows Alzheimer’s disease can be reversed to achieve full neurological recoveryβ€”not just prevented or slowedβ€”in animal models | CWRU Newsroom | Case Western Reserve University For more than a century, people have considered Alzheimer's disease (AD) an irreversible illness. Consequently, research has focused on preventing or ...

Another health breakthrough.

(h/t Gav)

29.12.2025 10:46 β€” πŸ‘ 2001    πŸ” 689    πŸ’¬ 88    πŸ“Œ 89
This edge-on illustration of our galaxy is presented as a Christmas tree shape surrounded by actual Christmas tree branches. The illustration itself reveals the galaxy's thin disc and central bulge from the side. Overlaid is a data visualisation, with colours ranging from blue to red.

This edge-on illustration of our galaxy is presented as a Christmas tree shape surrounded by actual Christmas tree branches. The illustration itself reveals the galaxy's thin disc and central bulge from the side. Overlaid is a data visualisation, with colours ranging from blue to red.

On the fifth day of Christmas, Gaia sent to us
This unexpected findingΒ 
The Milky Way's great wave 〰️

Discover the full image here πŸ‘‰ https://www.esa.int/Science_Exploration/Space_Science/Gaia/Gaia_discovers_our_galaxy_s_great_wave
πŸ”­

29.12.2025 16:02 β€” πŸ‘ 78    πŸ” 17    πŸ’¬ 2    πŸ“Œ 2
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In not-very-good news, extreme winds (114 mph gusts) on the early morning of the 25th caused significant damage to the 36" Great Refractor at Lick Observatory. Half of the main shutter broke off and landed on the main building.

27.12.2025 01:00 β€” πŸ‘ 86    πŸ” 30    πŸ’¬ 6    πŸ“Œ 7

Oh no! I’m hoping for speedy recovery and that everyone stays safe.

27.12.2025 01:30 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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A Day in the Life of Mary Hatch in the Alternate Bedford Falls 7:00-8:30 A.M. Wake up whenever I wantβ€”no kids! 9 A.M. Open library, feeling refreshed and ready for the day. 10:30 A.M. Send another overdue notic...

[SATIRE] "9:00 P.M. Crawl into bed exhausted from the cultural weight of being the town spinster librarian, but grateful I can read all day and enjoy peace and quiet and generally do whatever the hell I want. It actually is a wonderful life." www.mcsweeneys.net/articles/a-d...

23.12.2025 21:18 β€” πŸ‘ 26    πŸ” 5    πŸ’¬ 0    πŸ“Œ 0
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Save NCAR from being dismantled today! The Trump Administration has vowed to dissolve the center that provides critical extreme weather and climate data for our nation.

Are you an atmospheric scientist? Do you like knowing where smoke and other plumes go & what harmful chemicals might be in those plumes? Then you value NCAR even if you didn't know. Take a moment to tell your Rep and Senators, please: agu.quorum.us/campaign/151...

22.12.2025 13:57 β€” πŸ‘ 18    πŸ” 12    πŸ’¬ 1    πŸ“Œ 1

Surprisingly, or maybe not, I wonder that a lot. Thanks for the great post and the code

19.12.2025 20:12 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
SPHEREx First All-Sky Map β€” Spectrum
YouTube video by JPLraw SPHEREx First All-Sky Map β€” Spectrum

The first data from NASA's SPHEREx mission are out!

Check out this video, showing the entire sky in infrared light. The Milky Way runs as a band across the center. Each frame shows a different infrared wavelength, with light from stars, hot gas, and cosmic dust. πŸ”­πŸ§ͺ

www.jpl.nasa.gov/news/nasas-s...

19.12.2025 19:11 β€” πŸ‘ 365    πŸ” 94    πŸ’¬ 9    πŸ“Œ 4

REMINDER: We are currently accepting applications to the Mino Postdoctoral Fellowship. This research program offers an exceptional opportunity for talented early-career scientists worldwide to contribute significant advances in the following fields:

πŸ§ͺ

19.12.2025 00:19 β€” πŸ‘ 13    πŸ” 12    πŸ’¬ 1    πŸ“Œ 0
Post image 18.12.2025 17:16 β€” πŸ‘ 1230    πŸ” 220    πŸ’¬ 2    πŸ“Œ 5
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The administration dismantling NCAR is scientific vandalism, much like the Taliban demolishing cultural artifacts.
www.theguardian.com/world/2001/m...

17.12.2025 14:04 β€” πŸ‘ 258    πŸ” 89    πŸ’¬ 9    πŸ“Œ 8

@dacmess is following 18 prominent accounts