Lee Billings
@leebillings.bsky.social
2.1K followers 450 following 81 posts
CHNOPS in ferruginous saline. Multicellular aerobic chemoheterotroph; symbiont of photosynthetic autotrophs. Descendant of stardust; aspiring good ancestor. Senior Editor, Scientific American. Signal: @lee_billings.81
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leebillings.bsky.social
Hey just FYI I *think* the post to reply to for quantum physics isn't available anymore/has been deleted/is borked? From here: bossett.io/science-feed/. Just tried to reply to get on the science feed and got an error.
bossett.io
leebillings.bsky.social
lol, this mental image is exactly what I needed today. 😆
leebillings.bsky.social
Now on @sciam.bsky.social: A fresh look at old Cassini data shows surprising chemical complexity brewing within Enceladus. This time we've found oodles of chonky organic molecules that could be precursors to (or byproducts of) even chonkier biomolecules.

www.scientificamerican.com/article/is-l...
Is Life inside Enceladus? Saturn’s Ocean Moon Is Awash with Biology’s Raw Ingredients
A fresh analysis of old data has found rich organic chemistry within the hidden ocean of Saturn’s moon Enceladus
www.scientificamerican.com
Reposted by Lee Billings
caseydreier.bsky.social
In my latest piece for The Planetary Report, I argue that we’ve largely lost the rhetorical ability to defend the unquantifiable values of space exploration—beauty, curiosity, discovery—in the face of an unrelenting focus on utilitarian pragmatism.

www.planetary.org/articles/a-c...
A cosmic perspective worth fighting for
NASA's science budget is under threat. Here's what that could mean to the human endeavor of exploration.
www.planetary.org
leebillings.bsky.social
Thank you for the kind words, Phil!!!
Reposted by Lee Billings
philplait.bsky.social
This is a great article by my friends and colleagues Nadia and Lee.
Reposted by Lee Billings
danvergano.bsky.social
"Millennia ago a piece of the sky fell toward East Africa, streaking overhead, born of an ancient collision..."

www.scientificamerican.com/article/insi...

Shiid-birood, a fabled iron meteorite taken amid reports of violence, revealed tantalizing mysteries before vanishing into a shady underworld
The Meteorite That Vanished: A Tale of Lies, Death and Smuggling
How a space rock vanished from Africa and showed up for sale across an ocean
www.scientificamerican.com
leebillings.bsky.social
For Artemis III before taikonauts make moonfall, yeah, Starship’s the bigger concern there.

But more broadly problematic is this: the US has spent big $$$ supporting/building hardware for lunar return (Obama era counts, IMO) for decades on end—only to be here, reliant on a wild Hail Mary via SpaceX
leebillings.bsky.social
Possible, sure.

But is it more possible than, say, any alternative from “legacy” US aerospace firms eventually being an order of magnitude pricier than that?

😅
leebillings.bsky.social
Not trying to excuse or defend SpaceX; just noting how remarkably gently the NYT piece treats these other very problematic parts of the Artemis program.
leebillings.bsky.social
Lol’d at the NYT piece’s framing of SpaceX’s lunar lander as “riskiest”—something which is certainly true for Artemis III.

But meanwhile SLS and Orion are what make Artemis I-IV launches cost >$4 billion *apiece*.

That’s unsustainable—*riskily* so—and is why NASA went to SpaceX in the 1st place.
danvergano.bsky.social
Some interesting sociology of space news to watch with the NYT dropping a fairly thin, but obvious piece by one of their anointed today www.nytimes.com/2025/09/20/u... saying the obvious: NASA's SpaceX lunar landing plans are unlikely to work anytime soon despite a lot of U.S. chest beating. 1/n
U.S. Is Losing Race to Return to Moon, Critics Say, Pointing at SpaceX
www.nytimes.com
Reposted by Lee Billings
sarahexplains.bsky.social
We've reached 6,000 confirmed exoplanets! I talked with @aussiastronomer.bsky.social about where things go from here. (A great graphic by @unamandita.bsky.social visualizes the amazing jumps in planet finds since the first ones were confirmed in the 1990s.)
Want to Get Away? NASA Now Offers More Than 6,000 Alien Worlds to Daydream About
It’s a crowded galaxy, the latest exoplanet tally shows
www.scientificamerican.com
Reposted by Lee Billings
drfunkyspoon.bsky.social
Tomorrow!
NASA HQ 3 PM.
Free & open to the public.
drfunkyspoon.bsky.social
ASTROBIOLOGY AND…
Life, The Cosmos & the Human Story

Short talks by all the NASA/Library of Congress Astrobiology Chairs

DC area folks - This will be an amazing event next Wednesday (9/17) afternoon at NASA HQ - open to the public, not live-streamed. Attendance limited. Please RSVP & attend!
🧪
Astrobiology And…
Life, the Cosmos, the Human Story 

Wednesday, September 17, 2025
3-5pm EDT
Please RSVP here  to attend
https://docs.google.com/forms/d/e/1FAIpQLSeLMcW07jemIFTGOEoaeQzYO6f8PmZLvGChi28QAVqKHJ3WzQ/viewform

NASA Headquarters
300 Hidden Figures Way SW, Washington, D.C.
Webb Auditorium
leebillings.bsky.social
Good thread.
kenwhite.bsky.social
I have a couple of comments about the "free speech hero" narrative about Charlie Kirk.

First, was Charlie Kirk really notable for supporting the free speech of people he disagreed with? I haven't noticed that, though I could have missed it.

/1
Reposted by Lee Billings
philplait.bsky.social
So what I glean about this Mars announcement is that chemicals were found on Mars that on Earth are due to life, and no one knows any other way to make them on Mars. However, this is very far from knowing they *were* made by life. Reminds me of phosphine on Venus; "we don't know" doesn't mean life.
Reposted by Lee Billings
alexwitze.bsky.social
To sum up: we have

🪨 A cool rock from #Mars that may or may not hold evidence of ancient life

🛰️ An internal fight over whether NASA should spend its money on science or human exploration, and on what planet

🤔 A totally uncertain future for this amazing rock

🧪
Reposted by Lee Billings
alexwitze.bsky.social
Fundamentally the #Mars announcement NASA is making today boils down to: there could have been some chemical reactions in these ancient rocks that could have been mediated by living organisms. The word "could" is doing a LOT of heavy lifting there. 🧪