David S. F. Portree

David S. F. Portree

@dsfpspacefl1ght.bsky.social

history guy, science writer, educator, map librarian, archivist, 58 yrs a space exploration nut, ex-NASA, ex-US Geological Survey, now doing local history among the pines in Flagstaff AZ USA Save NASA space science https://spaceflighthistory.blogspot.com

4,071 Followers 1,462 Following 7,192 Posts Joined May 2023
4 minutes ago

Good news

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10 hours ago
Rocks and sand.

NASA/JPL-Caltech/ASU/MSSS/Kevin M. Gill

Some rather gnarly looking rocks near the Mars Perseverance Rover, imaged yestersol (Sol 1799) using MastCam-Z.

flic.kr/p/2s23hvn

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2 hours ago
Preview
BBC Radio 3 - Through the Night, Beethoven Piano Concertos from Romania Andrei Licaret directs Beethoven's concertos 2, 3 and 4 from the piano.

🔊 #NowPlaying on #BBCRadio3:

#ThroughTheNight
- Beethoven Piano Concertos from Romania

Andrei Licaret directs Beethoven's concertos 2, 3 and 4 from the piano.


▶️ Relisten on BBCSounds

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11 hours ago
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HiPOD: A Light Outcrop in Aurorae Chaos

This observation shows a light, layered outcrop in Aurorae Chaos. The surrounding material is much darker than this outcrop. We can also look for variations between the layers.

https://uahirise.org/hipod/ESP_076804_1730
#Mars #science #NASA

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1 day ago
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March 13, 1969, Schweickart, Scott and McDivitt successfully conclude #Apollo9 with a splashdown in the Atlantic Ocean, just 4.5 nautical miles from their prime recovery ship the USS Guadalcanal.

contactlight.de

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1 day ago
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Navy frogman team prepares the #Apollo9 Spacecraft "Gumdrop", March 13, 1969

contactlight.de
forallmankind.de

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5 hours ago

So happy this video is available. I hadn't seen it before this. I recall that BBC World Service broadcast, though!

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12 hours ago
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Great to see #AerospaceBristol celebrating the 40th anniversary of @science.esa.int #Giotto encounter with #HalleysComet - a mission that put @esa.int on the world stage and showcased the space engineering talent in UK and #Bristol. 👏👏👏 @ukspaceagency.bsky.social @cmundell.esa.int

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5 hours ago
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This is a good lesson for journalists: Use plain language to state true things clearly.

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6 hours ago
Senator Tuberville on x writing a response to the @endwokeness account 

Original tweet from @EndWokeness - “less than 25 years apart”
Image 1 - the twin towers as they are hit by a the planes on 9/11/2001
Image 2 - Mayor Mamdani sitting on a prayer rug while hosting an Iftar  at city hall

Quote tweet from Senator Tuberville - “the enemy is inside the gates.”

Let there be as much outrage from politicians in Washington when kids go hungry as there is when I break bread with New Yorkers.

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8 hours ago

Once again: if Trump were a Russian agent actively attempting to bring about the downfall of the United States of America and aid Putin's Russia, what would he be doing differently?

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5 hours ago
Originally released as Viking Mosaic 211-5610

Southern Hemisphere/Aonia Terra - Revolution 402 - From Aster Cowart (terrasabaea.bsky.social) - https://flic.kr/p/ruafTV

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6 hours ago
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She pip at me.

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5 hours ago
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Two episodes of 'Doctor Who' were just rediscovered, a 'holy grail' of long-lost classic TV They have been restored by BBC archivists and will be available next month on the broadcaster's streaming service.

The two episodes have been restored by BBC archivists and will be available next month on the broadcaster's streaming service.
https://to.pbs.org/4uykX7U

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6 hours ago

Also applies to not necessarily superrich people like 5 term senators and supreme court justifices.

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5 hours ago

I am a big fan of the First Doctor. That being said - I really wish we could find more Second Doctor eps. The folks who destroyed so many early eps seem to have disliked that incarnation.

If I had a time machine, I'd go back and save the lot.

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8 hours ago
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🚨 EPISÓDIOS ENCONTRADOS 🚨

✨Dois episódios perdidos da década de 60 foram encontrados.

✨Os episódios, The Nightmare Begins e Devil’s Planet fazem parte do 3º serial, "The Daleks Master Plan". Escrito por Terry Nation e estrelando o 1º Doutor Willian Hartnell como o Doutor.

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8 hours ago
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150 US soldiers have been injured, 5,000 more heading into Iran today. Trump is a coward, criminal, five-time draft dodging piece of shit sending your kids to war.

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3 days ago
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A cat waiting for his order in Istanbul 😂

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8 hours ago

You may have seen that a major update in our lawsuit challenging the dismantling of the National Endowment for the Humanities went a bit viral this week.

Why? Because the outcome of this case affects a lot of people—not just historians.

Here’s what’s going on. 🧵

(1/5)

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8 hours ago
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We’re here to support libraries. Take action at action.everylibrary.org.

#library #libraries #read #reading #book #books #librarylove #author #publiclibrary #literature #lit

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8 hours ago
Star Trek Prodigy scene. An animated Katherine Janeway, in uniform, sits on her ready room desk. But like, fully sitting *on* the desk like a mermaid would but no seashells. Next to the desk stands a Tellarite who has pig-like features and a sick beard, and a humanoid appearing officer, both Starfleet. 
Closed caption reads, "My--my brains are fine. I'm just busy thinking real hard, that's all." Alts in image 1!
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1 day ago

So to review: Oil > $100 a barrel, ~30% increase at pump. Mortgages >6%. We replaced one Supreme Leader with his more hardline son, whose whole family we killed. We murdered ~160 girls. Everybody in world but Bibi is pissed at us. Spent more in 1 week on war than USAID costed for 6 months.

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8 hours ago
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🛰️☄️ La sonde chinoise #Tianwen2, lancée en 2025, a parcouru à ce jour environ 700 millions de kilomètres et devrait atteindre l'astéroïde géocroiseur 2016HO3 en juillet (date non officielle).
📷 Selfie d'octobre 2025

Rappel de la mission : reves-d-espace.com/t...

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8 hours ago

THE WORLDWIDE FLAG OF ANTIFASCIST RESISTANCE

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10 hours ago
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Remembering Douglas Rain, born March 13, 1928 and passed away November 11, 2018.

Full Post
www.facebook.com/photo/?fbid=...

. #TodayInNerdHistory #March13 #DouglasRain #2001ASpaceOdyssey #2010TheYearWeMakeContact #HAL9000 #HAL #Macbeth #Birthday #History #News #OTD #FYP #Nerd .

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10 hours ago
A graphic with a photo of Elon Musk. The text says, "Elon Musk's DOGE stole EVERYONE'S private Social Security data and took it to a private company. That's 350 million felonies."

It is a felony to steal someone’s private Social Security data and give it to a third party without consent.

Elon Musk's DOGE did that 350 million times.

350 MILLION FELONIES.

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2 days ago
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Many Issues Are Present With U.S. Lunar Landers, OIG Report Finds Having announced its audit back in July 2024, NASA's Office of Inspector General (OIG) recently released its report into the SpaceX and Blue Origin Human Landing Systems (HLS), contracted to land astr...

The Office of Inspector General at NASA has found several issues with Artemis' lunar landers, including their schedules, systems development speed, and astronaut usable systems

For @proximareport.bsky.social -> proximareport.com/articles/iss...

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15 hours ago
Fuelling of the Giotto spacecraft in French Guiana, July 1985 (© ESA ECSR) Mission operations at ESA ESOC, Giotto scientist Gerhard Schwehm in foreground (© ESA ECSR)

It’s almost inconceivable to talk about ESA’s early years without looking at the many firsts that the Giotto mission achieved in 1986, including first cometary encounter and first reactivation of a spacecraft. So that’s exactly what we are doing today 😊

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15 hours ago
ESA Giotto project manager David Dale presenting mission to press at encounter media event, 13 March 1986 ( © ESA ECSR) Giotto flight operations summary for 13 March 1986 ( © ESA ECSR)

A very special opening of material from the #ESAarchives celebrates the 40th anniversary of Giotto’s historic flyby of Comet Halley, in photos, images and documentation.

historicalarchives.esa.int/giotto-comet...

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