This evening we've had supernumerary rainbows in the Bay Area.
Supernumerary rainbows are so cool because they are generated not only by dispersion (prism) like normal rainbows but also by interference (soap bubble) on top of that.
If you look closely, you'll see more colors after violet.🌈
If you were wondering what those bright flames were seen in this infrared view - those are RCS puffs to bring the capsule in an optimal landing orientation to reduce impact loading during splashdown #Artemis
I hate when fantasy films I made a long time ago begin to come true in real life.
The voyage of the Katrin neutrino detector through the streets of Karlsruhe made for some amazing images.
posting this 'ol thing again for no reason
Don't you think we have a serious checks-and-balances gap here in the US?
It shouldn't be possible for a single maniac to take control of this much power so casually.
I mean, yeah, they are a bunch of maniacs, but all gathered around (and by) a single maniac.
The Artemis II core stage continues into space under the power of its four RS-25 engines as the two solid rocket boosters fall away.
This shot of the Artemis II launch goes hard
Credit: Brian Balail (@balail.bsky.social)
Artemis ii
Crescent view of Earth. NASA/Artemis II/Kevin M. Gill
Crescent Earth as viewed by the Artemis II crew yesterday (April 4th).
flic.kr/p/2s5Z9yc
Took me a while to track it down but for all the camera nerds asking the same question I did - high res version complete with EXIF data is here: images.nasa.gov/details/art0...
It was taken with a Nikon D5 with 14-24mm f2.8 lens, 1/4 sec at f4, ISO 51200
A full disc image of Earth, as seen from the Orion Crew Module. The planet is a pale blue, swirling with white clouds and glowing slightly lighter blue in place from reflected light. At lower left, a large brown landmass is Africa, with Spain and Portugal with twinkling lights where the planet curves. At top right, auroras glow in a thin green glow, just barely separated from the planet's surface. Earth is set against the black of space (pic: NASA/R.Wiseman)
More context on this #Artemis II image:
* This is the night side, lit by moonlight. You can see city lights in Spain & Portugal, & a sliver of day at lower right
* The Sun is entirely behind Earth, which makes it a kind of solar eclipse, but w/ Earth doing the eclipsing instead of the Moon:
☀️🌍🚀🌕
![4-panel comic. (1) [Black panel with white text boxes] TEXT BOX: And God said, "Let there be light," (2) [Sun radiating light.] TEXT BOX: And there was light. (3) [View of bright sun rising over Earth's horizo] (4) TEXT BOX: God saw that light was-- [Chat bubble from Earth] CHAT BUBBLE: Can you add support for dark mode?
Open xkcd.com to view toggles for different modes.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreigv4lnl5phqlsgrautsjkvbzclczdwkiditx4lkoipyqxmvnorwei)
4-panel comic. (1) [Black panel with white text boxes] TEXT BOX: And God said, "Let there be light," (2) [Sun radiating light.] TEXT BOX: And there was light. (3) [View of bright sun rising over Earth's horizo] (4) TEXT BOX: God saw that light was-- [Chat bubble from Earth] CHAT BUBBLE: Can you add support for dark mode? Open xkcd.com to view toggles for different modes.
CREATION
Happy April Fool's Day!
xkcd.com/3227/
Highlighted section of the Copilot ToS which says "Copilot is for entertainment purposes only"
www.microsoft.com/en-us/micros... is it good to build an entire economy and software infrastructure on this
Wait. You can just say "we might infringe on your rights" in your Terms Of Service?
Another massive battery storage record in California (CAISO) yesterday, March 29 🔋
At 7pm, batteries reached 12.3 GW of output, meeting 42.8% of demand!
And it's not just a short peak anymore. Batteries stayed above 20% of grid supply from 5.50pm to 9.35pm, almost four hours.
Hydrogen peroxide + UV light = restoring the color of old plastic parts that have yellowed over time.
The sky recently glowed bright red over Western Australia as Tropical Cyclone Narelle approached. Here is what to know about the phenomenon. www.nytimes.com/2026/03/29/w...
The TC-2 computer was used on the A-7 Corsair II aircraft. The computer is a gray box, a bit under a cubic foot. It has round military-style connectors on the front, as well as a black fan. It has stencilled text: "Caution: Weight over 60 pounds", "Grip Area Underneath". The fan has a red warning label: "No step. No lift. High temperature." Photo courtesy of Alex1970-14.
The AP-101S is the upgraded Space Shuttle computer. It is a rectangular metal box with U-shaped metal handles on the front, as well as round military-style connectors. The cover is removed, revealing about a dozen large circuit boards inside, as well as a large bundle of yellow and black wires.
In 1967, IBM introduced the System/4 Pi line of aerospace computers, packing mainframe performance into a compact box. 4 Pi computers powered everything from military aircraft to the Space Shuttle to sonar systems on submarines. Thread...
Autoportrait, hummingbird style. 😎
Half Moon bay, Cowell-Purisima Trail
Very amusing vowel space playground
editor.p5js.org/mimoi/full/x...
Nature is metal 🤘😜
From March 15 through March 26 there have been...
More than 100 monthly records & more than 700 daily records broken or tied.
Since March 1 there have been more than 1,100 daily records broken or tied across the nation.
Some record heat will remain through the weekend for areas of the Southwest.
Exactly! This is my Siggraph 2000 mug that I have been using since then, multiple times a day. Still as good as day one.
after much deliberation and giving AI the benefit of the doubt, Wikipedia editors have had enough of AI slop. New policy bans LLM generated content, periodt www.404media.co/wikipedia-ba...
New 225-m diameter lunar crater imaged by LRO, incidence angle 38°. Image width 950 meters, north is up.
A new 225-meter (740-foot) crater appeared on the Moon while nobody was looking. NASA's lunar orbiter imaged the dramatic aftermath.
Such large impacts are once-in-a-century events. This one happened in the spring of 2024. 🔭🧪
www.sciencenews.org/article/moon...
😆🔺
First you're struck by their silly, crazy costumes, and when they start playing you're hit again by the weird microtonal melodies.
But the most interesting part was me liking their music a lot. 🤯
youtu.be/0Ssi-9wS1so?...
Fun fact: the rover would be able to drive perfectly fine even if the inner 2/3 of the wheel rim totally breaks off. There is enough toque in the wheel motors to pull the entire rover up a vertical wall if only one of them was operating. It could drive fine if the wheels were square.
The US President casually announcing his intention to commit war crimes on social media. That's where you're at, America.
