Things that work: giant rocket, very precise math, orbital mechanics, cameras, iPhones

Things that don’t work: Microsoft Outlook, toilets, sat phones

#Artemis websites I am watching today:
Main commentated broadcast:
www.youtube.com/watch?v=m3kR...
Uncommentated feed:
www.youtube.com/watch?v=6Rwf...
Flickr photostream:
www.flickr.com/photos/nasa2...
Telemetry feed:
www.youtube.com/watch?v=6mtZ...
Amateur-produced live timeline:
x37b.nl/artemis/

Anthropic’s Project Glasswing—restricting Claude Mythos to security researchers—sounds necessary to me Anthropic didn’t release their latest model, Claude Mythos (system card PDF), today. They have instead made it available to a very restricted set of preview partners under their newly announced …

Wrote up some thoughts on Anthropic's Project Glassing, where their latest Opus-beating model is available to partnered security research organizations only. Given the recent alarm bells raised by credible security voices I think this is a justified decision.
simonwillison.net/2026/Apr/7/p...

Get more from acollierastro on Patreon science, data and (sometimes) academia

Sorry to advertise myself. I have a patreon where patrons vote on video topics and get a bonus video a month. Sometimes that video ends up on YouTube sometimes not.

We are also doing a livestream bookclub in ~3 weeks. We are reading The Left Hand of Darkness.

patreon.com/acollierastro

RetroCast Now And now, your RetroCast. Brought to you by The Weather Channel.

Found this out and now it’s bookmarked. A dose of nostalgia at the touch of a button. You’re welcome.

weather.com/retro/

Shooting for the Moon: Christina Koch’s Historic Journey From Johns Hopkins APL to Space Christina Koch, a former electrical engineer with APL, returned to the Laurel, Maryland, campus to share her experiences as a NASA astronaut.

Christina Koch’s journey included helping build and test an APL science instrument now at Jupiter and a record-setting 328-day mission in space. As Artemis II launches, revisit her path from APL engineer to astronaut: https://jhuapl.link/sio

On behalf of the Flight Software Workshop 2026 Organizing Committee, we thank you for attending and making the workshop a great place to learn and exchange ideas.

An 800+ mile long haboob sweeping across northwest Africa.

My oh my...

Soon!!!

Reminds me of the Squeezeboxes I had back in the day. I loved those things.

The planet Saturn is clearly banded in this infrared view, and its rings are glowing. The small bright point at lower left of the planet is the icy satellite Dione. The background is pitch black.

This new #JWST image of Saturn is AWESOME

Titan, Saturn’s largest moon, was discovered on March 25, 1655, by Christiaan Huygens. More than 350 years later, it remains a key target for exploration. Launching in 2028, NASA’s Dragonfly mission will investigate the complex chemistry of this ocean world. https://dragonfly.jhuapl.edu/Why-Titan

Scott Manley scottmanley.bsky.social of Science Communicator and Space Content Creator on YouTube,
Manley Media presents ""KEYNOTE | Adventures in Flying Safe"

Welcome to the 19th Annual Flight Software Workshop

FSWorkshop badge with a stylized solar system and my name

Good morning! @flightsoftware.org

Fun story, when I went to USAF OTS (in Montgomery, AL) I figured I'd road trip to my first base. I had plenty of west coast, Colorado, etc. bases on my dream sheet and was looking forward to the drive. I got Ramstein in Germany. (I didn't complain...)

Tampa, FL to Dayton, OH in one day (~15 hrs). Quite a few Dayton to AR trips (~9 hrs?). Several 2-day drives from MD to AR. (~15 hrs of driving time, but not doing that straight through with a baby...)

Dr. Elizabeth Turtle of JHU/APL @jhuapl.bsky.social presents "KEYNOTE | Dragonfly: Robotic Aerial Exploration of Prebiotic Chemistry and Habitability on Saturn's moon Titan"

"Realis by Austin Walker on Kickstarter April 2026" is layered over a science-fantasy image of four adventures.

Realis—the moon-hopping TTRPG by @austinwalker.bsky.social—lands on Kickstarter April 2026! Featuring 55 classes, 150+ NPCs, 100+ illustrations, expanded GM & homebrew guidance, and much more, bookmark the campaign today at: www.kickstarter.com/projects/cru... | teaser art: @decassette.bsky.social

What an incredible + RARE sky around 8:30a.
These photos by Chris Hager and Luke Fisher show super impressive display of atmospheric optics, including bright sun dogs on either side of the sun along with halos and arcs above. They form as sunlight passes thru ice crystals in high clouds.

Go Dragonfly!

What's My JND? Find your Just Noticeable Difference in colour perception. How small a colour difference can you actually see?

What's My JND? 0.0108
This was neat www.keithcirkel.co.uk/whats-my-jnd...

DREAMM DREAMM is a bespoke emulator for LucasArts, Lucasfilm, and Lucas Learning games.

Happy to announce that DREAMM 4.0 is now available for Windows, macOS, and Linux!

dreamm.aarongiles.com

Now with support for all Lucas-family games released prior to 2000 on DOS, Windows, and FM-Towns, including all 8 Lucas Learning games. Network play is also now supported (experimentally).

Composite image of NGC 1068 based on Hubble Space Telescope images from our project, created by Judy Schmidt. The heart of a spiral galaxy is centered in the frame with brown winding dust lanes sprinkled with blue regions of recent star formation. Some small red galaxies are visible in the background.

Composite image of NGC 4303 based on Hubble Space Telescope images from our project, created by Judy Schmidt. A spiral galaxy is centered in the frame with bright blue spiral arms highlighting regions of recent star formation while brown winding dust lanes meander throughout.

New paper day! In an effort led by PhD student Madison Markham, we determined the first accurate and precise distances to two famous AGN host galaxies: NGC 1068 and NGC 4303. Using the Hubble Space Telescope, we identified Cepheid pulsating stars and measured their pulsation periods and mags 🔭🧪(1/2)

Wallpaper worthy

as an amateur model-watcher, thanks for all your hard work!

Short musings on "cognitive debt" - I'm seeing this in my own work, where excessive unreviewed AI-generated code leads me to lose a firm mental model of what I've built, which then makes it harder to confidently make future decisions simonwillison.net/2026/Feb/15/...

The Japanese game music performance group "Fantom Iris" is a four-member band, but drummer Yamaoh frequently appears on social media

Today they're performing "Free Flyer" from NEMESIS (known in Japan as GRADIUS)

Everyone, enjoy watching!

Yamaoh from Fantom Iris will be playing the drums. The song is the classic "VAMPIRE KILLER" from Castlevania. Enjoy, everyone!

Fantom Iris drummer Yamaoh will perform the classic song "Power of Anger" used in Stage 1 of LIFE FORCE.
In Japan, it's famous under the title "Salamander(沙羅曼蛇)"
Have a great day, everyone!

Looks like some interesting papers at SpaceSec this year. (A workshop at NDSS) Sorry I couldn’t make it!