S.M. Pritchard @smpritchard.bsky.social · 10/10/2026M 27, the Dumbbell Nebula, a planetary nebula in the constellation of Vulpecula. It is remarkable among planetary nebula due to the size of the central white dwarf, which is almost 6 Earth-radii across. 🔭 0325
S.M. Pritchard @smpritchard.bsky.social · 09/10/2026I have so many plans for both scientific observations and astrophotography this winter, so long as the weather co-operates! Can't wait for 11-12 hour nights! I'm gonna need more disk space... 010
S.M. Pritchard @smpritchard.bsky.social · 09/10/2026He has more empathy towards an inanimate, unthinking piece of software than he does his own flesh-and-blood daughter. 030
S.M. Pritchard @smpritchard.bsky.social · 05/10/2026Devices need to go back to being big and chonky with lots of buttons, dials, and switches 000
S.M. Pritchard @smpritchard.bsky.social · 23/09/2026Amazing to think this thing will be flying through the skies of Titan in a little less than a decade! 000
S.M. Pritchard @smpritchard.bsky.social · 23/09/2026I thought it was an explicit design goal for amethyst meant to encourage players to build infrastructure around geodes to farm them? Making them silk touchable would remove that gameplay. 141
S.M. Pritchard @smpritchard.bsky.social · 17/09/2026Just a simple filter-mounted diffraction grating called a StarAnalyzer. It's pretty nifty, although limited, but it's a great tool to learn the basics of spectroscopy. rspec-astro.com/star-analyser/rspec-astro.comThe Star Analyser SA-100 and SA-200 - RSpec / Real-time SpectroscopyThe Star Analyser 100 grating screws onto your camera nose or filter wheel 011
S.M. Pritchard @smpritchard.bsky.social · 17/09/2026On 09/01, a new supernova was found in the galaxy NGC 7331, so last night I tried to image it and record a spectrum. It's about mag 12 right now. The spectrum shows the silicon absorption of a type 1a supernova. From this I got an expansion velocity of about -9200 km/s (3% the speed of light). 🔭🧪☄️ 1192
S.M. Pritchard @smpritchard.bsky.social · 14/09/2026Nope, it's water ice. It's too warm on Titan for methane ice, though only just. 120
Reposted by S.M. PritchardJonathan McDowell @planet4589.bsky.social · 14/09/2026Here is our (very simple) paper: Elvis M. and McDowell J.C. (2026) No cities on the Moon: a billion tons of water is not enough for sustainability; Frontiers in Space Technologies 7, 2026.1894104 www.frontiersin.org/journals/spa...frontiersin.orgFrontiers | No cities on the Moon: a billion tons of water is not enough for sustainabilityWe show that, with reasonable consumption rate estimates, that (1) power is not a strong constraint on the lunar population but (2) the roughly 1 billion ton... 47025
S.M. Pritchard @smpritchard.bsky.social · 12/09/2026I think it's supposed to be a parody of that ex-AI worker post from a few days ago. 1150
Reposted by S.M. PritchardKen Burnside @kenburnside.bsky.social · 07/09/2026RT if you’ve never had a tab of ChatGPT open, ever. Nor Grok, Claude, or anything else. And I turn it off the moment it tries to pop into other apps. I use @kagi.com to avoid AI summaries of my web searches. 1156
S.M. Pritchard @smpritchard.bsky.social · 04/09/2026Yeesh. I had a sense morale was bad there but I didn't realize it was *that* bad. We're not going to recover from this in our lifetime. 020
S.M. Pritchard @smpritchard.bsky.social · 03/09/2026I thought Hubble's and Roman's focal ratios were driven in part by their science objectives, even if ultimately constrained by the KH-11 bus? And even if an "off-the-shelf" KH-11 is optimized for surface imaging, it would still have utility as a photometric survey tool at the very least, no? 120
S.M. Pritchard @smpritchard.bsky.social · 03/09/2026All of these should be placed under civilian control and turned outwards to contribute to astronomy, so they can actually do something good for society. 230
S.M. Pritchard @smpritchard.bsky.social · 01/09/2026And undergrads who also felt like astronomy was their calling, like myself, have basically had our future careers ended before they could even begin. Maybe it's actually a blessing I've not had luck getting into grad school. Guess I should get used to industry. 000
S.M. Pritchard @smpritchard.bsky.social · 25/08/2026Dolly Parton was a paragon of humanity, supporting childhood literacy and even helping save lives by donating $1 million of her own money to COVID vaccine research during the pandemic. While her loss is saddening, she made the world better for having lived in it. May we all aspire to such a legacy. 075
S.M. Pritchard @smpritchard.bsky.social · 22/08/2026Yup! You can even detect some of them with apertures as small as 4-inches, depending on conditions (although you're much more limited in targets). Some people even had success using DSLRs! 001
S.M. Pritchard @smpritchard.bsky.social · 22/08/2026My latest exoplanet transit observation from a few nights ago, so far my first and only clear night this entire month. This is TOI-2046 b, a hot Jupiter orbiting an F-type star 289 lightyears away in the constellation of Cassiopeia. It has a radius of 1.44 Jupiters and orbits in just 1.5 days. 🔭🧪☄️ 2192
S.M. Pritchard @smpritchard.bsky.social · 22/08/2026This depends on the eccentricity of the orbit though, yes? I'm not sure how well-constrained our eccentricity measurements are for most M-dwarf terrestrial planets, but IIRC anything above like 0.2 is more likely in some kind of non 1:1 synchronous rotation similar to Mercury. 110
S.M. Pritchard @smpritchard.bsky.social · 21/08/2026Surely it's the Sift, or a version of the Sift as recounted through villager legends. A dimension of souls, origin of the allays, font of all life in the overworld, etc. 020
S.M. Pritchard @smpritchard.bsky.social · 20/08/2026It would be a generational marketing blunder if they added an entirely new dimension to MCD but didn't also add it to Vanilla. We might not hear about it immediately, but I suspect it will be coming in the near future. 160
S.M. Pritchard @smpritchard.bsky.social · 17/08/2026We should absolutely have networks of research bases on the Moon, Mars, Callisto, and Titan, like we do in Antarctica. But the idea of entire cities or nation-states is frankly silly. 080
S.M. Pritchard @smpritchard.bsky.social · 17/08/2026So baby sifter is not the final name. Given it looks similar to the nester, is it just a baby nester? 100
S.M. Pritchard @smpritchard.bsky.social · 15/08/2026Lots of smoke tonight, so I didn't even bother setting up even though the sky is relatively clear. 000
S.M. Pritchard @smpritchard.bsky.social · 14/08/2026I hate that between the clouds and now recently these last few years, the wildfire smoke, doing any astronomy during the summer where I live is basically impossible. 060
S.M. Pritchard @smpritchard.bsky.social · 10/08/2026There was a paper that came out recently that showed via atmospheric chemistry that an ancient ocean is unlikely, so it's interesting how confident they seem in their interpretation. www.nature.com/articles/s41...nature.comA dry Venusian interior constrained by atmospheric chemistry - Nature AstronomyThe composition of the volcanic gas supplied to Venus’s atmosphere indicates that the planet has a dry interior and is unlikely to have condensed liquid water on its surface, substantially constrainin... 120
S.M. Pritchard @smpritchard.bsky.social · 10/08/2026I hope we'll get another dev diary soon!! It feels like there's a lot less marketing for this game than there was for MCD1. 150
S.M. Pritchard @smpritchard.bsky.social · 08/08/2026This is one of the things that bothers me the most about solarpunk as aesthetic; the complete lack of any real ecological consideration or systems thinking. For instance, you know what else is solarpunk? Earthships. Xeroscaping. Windcatcher towers. But you almost never see those in solarpunk art! 1395
S.M. Pritchard @smpritchard.bsky.social · 07/08/2026Hmmm, I'll take 200 eyes, but each eye is a hyperspectral imager each tuned to a small band of frequencies, such that the whole ensemble gives me an extremely detailed perception of everything from like 200 to 1000 nm. 040
S.M. Pritchard @smpritchard.bsky.social · 05/08/2026Maybe not every technology needs to be developed. For being supposed experts in systems thinking, engineers almost always fail at understanding the systems that drive the use and development of tech for authoritarian ends. The prisoners are designing their own panopticon. 080
S.M. Pritchard @smpritchard.bsky.social · 03/08/2026Will this be recorded for people who have already graduated? 100
Reposted by S.M. PritchardRobert "The Bobby Yaga" McNees @mcnees.bsky.social · 01/08/2026“Not to know what’s beyond is like spending your life in the cellar, being completely oblivious of all the wonderful things around us.” Astronomer Helen Sawyer Hogg was born #OTD in 1905. She was an authority on variable stars and globular clusters, and a sci-com pioneer. 🧪 👩🔬 🔭 Image: U. Toronto 06712
S.M. Pritchard @smpritchard.bsky.social · 28/07/2026Is it even likely thst there ever would be a commercial quantum computer? They seem like they'll only ever be a hyperspecialized device with very little practicality outside of that. 001
Reposted by S.M. PritchardPeter Coles 🏳️🌈 🏳️⚧️ 🇮🇪 @telescoper.bsky.social · 28/07/2026The argument that curiosity-driven research should be supported because it reflects an essential part of human nature does not work if you try it on people who lost their essential humanity a long time ago. 02911
S.M. Pritchard @smpritchard.bsky.social · 23/07/2026They also seem to abhor society as a concept entirely 080
S.M. Pritchard @smpritchard.bsky.social · 22/07/2026GOES sats are in geostationary orbit, they'll stay up there essentially forever. Generally they're bumped up into a graveyard orbit at EoL to make room for new sats since slots in the geostationary band are limited. 120
S.M. Pritchard @smpritchard.bsky.social · 20/07/2026Maybe I'm not understanding something, but personally I don't see an issue with saying that consciousness could exist in a hypothetical non-biological system. Obviously, LLMs cannot be conscious, nor can any traditional form of computer. But I don't think there's anything special about "meat". 230