Fund science, not war. Fund healthcare, not war. Fund clean energy, not war. Fund childcare, not war. Fund education, not war. Fund literally anything else but war.

Apollo 8 December 22, 1968 The Apollo 8 crew tries, but fails, to show the TV audience their view of the Earth at approximately 217,000km. Photos developed after the mission reveal what the TV audience missed. 44/n

Day moons are one of my favorite reminders that we’re all in space all the time.

Telling good science from bad – a user’s guide to navigating the scientific literature www.wiringthebrain.com/2021/08/tell...

This map is a source of endless delights.

What a shining light for over a century. We need more Betty Reid Soskins in this world.

1/n 2 NEW epic images of Phobos over Mars just released by @esa.int Mars Express This view is especially striking, with Phobos between the Tharsis volcanoes and Noctis Labyrinthus–Valles Marineris Full resolution 300MP(!) & info on: flic.kr/p/2rMW4so Credit: ESA/DLR/FUBerlin/AndreaLuck CC BY 🧪🔭

There are always people trying to argue that misinformation doesn’t matter. But every time I read the news there is some horrific story or policy grounded in false beliefs that have been circulating online.

This is a bigger deal than most people realize. There are some… encryption efforts that are dependent upon *precise* corrections to time stamps. NIST is one of those government agencies that a huge portion of the world is unaware of their dependence upon.

This means we have an opportunity to shift to an alternate timeline if we all work together. Who's with me?

It makes me bananas the way machine learning—the outcome of decades of specialized computer programming and collaborative scientific research—has been shoved into the same box as the fascist world-burning plagiarizing autocomplete text slop programs.

Stayed out all night on the Perseids peak that year. Caught nothing. I went out the next night, and I was shut out again. But in the morning I went through the card and found this one. On that second night, there was an owl in the tree the whole time.

Curious about Europa Clipper's observations of interstellar comet 3I/ATLAS? Come hear me talk about them in this @setiinstitute.bsky.social livestream today at 2:30 PT / 5:30 ET! youtube.com/live/cXqwsc2...

Yes this

I mean, just check out this stunning new image from SPHEREx, the latest NASA space mission. It's mapping the full sky in 102 colors, and choosing the right combinations can reveal different information about the Universe. Here's our galaxy in infrared colors that pick out stars:

WE HAVE A TELESCOPE 🚀 The Nancy Grace Roman Space Telescope has been fully assembled here in the cleanroom at NASA Goddard 😀🚀 and is on track to launch next fall!

While some people are out there doing awful things, other people are out there building telescopes and analyzing results that expand our collective consciousness. As a result, we can see new worlds being born into the universe *right before our eyes*.

Wow! Not only can we see the disks where planets are being born around young stars, now we can sense the pull of the worlds taking shape within. Blue ovals show orbits of 31 newfound stellar companions. Bottom right: a simulation of our solar system at the same age. 🔭🧪 www.esa.int/ESA_Multimed...

Europa Clipper has observed interstellar comet 3I/ATLAS with its ultraviolet spectrograph instrument! News here: www.swri.org/newsroom/pre...

I take it all back we should absolutely let AI run the vending machines

There’s wisdom in books, and sometimes going through your books you even find a little extra.

From NASA: Is Titan a “slushy” world?🍦 New research reanalyzing data from our Cassini mission suggests Saturn’s moon does not contain a global subsurface ocean, as once thought. It shows Titan is mostly ice, with slush layers & small pockets of liquid water. go.nasa.gov/3Y0ncBK

From NASA: One for the record books! 🏁 This is what the Perseverance Mars rover saw through its navigation cameras as it was setting a record for the longest distance traveled during one Martian day, 1,350.7 feet (411.7 meters). Details: go.nasa.gov/3KNqNQF www.youtube.com/watch?v=nNAa...

MY 4-YEAR OLD: *calmly, while coloring a picture of the Grinch* If baby grinches die, we can eat them. If they’re clean. That’s ok

LFG!!!

🔭JWST Program 9219 - NIRCam Observations of a Solar System Object: www.stsci.edu/jwst/phase2-... target: Solar_System_Target, released: 2025-12-06 NASA, ESA, CSA, STSci/ #JWST NIRCam 430, 212, 150-164 See below for Aurora intrigue and images ⬇️

100,000 hi-res views of the Martian terrain! For your viewing, science, and landing-site-selection pleasure. go.nasa.gov/4oXJQpu

Martian sky #art #watercolors #tradart #sciart

New paper out! Thanks to Laura for leading the efforts! 🔭🪐🧪 A Roadmap for the Exploration of Enceladus - Rodriguez - 2025 - Journal of Geophysical Research: Planets - Wiley Online Library agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Come on, 2025, there’s still time for a plot twist where something really good happens.

the good that you do persists in this world

It's true: Death cannot stop true love. We'll continue to benefit from the love Reiner put into his craft and charcters for a very long time.

Steve isn’t here anymore, but he always posted this picture on Hanukkah so I thought we could carry on his tradition and remember him.

One can never have enough Selfies from Mars! This one from Perseverance Rover was acquired on December 12, 2025 (Sol 1711) using the SHERLOC WATSON camera. Credits: NASA/JPL-Caltech #perseverance #marsrover #m2020 #nasa #science #space #exploration #solarocks #mars #selfie #jpl #SHERLOC #watson

Sea and sky folding into each other. Just layers of cold light and dark water sliding past, the planet breathing slowly. I remember thinking how thin the boundary is between things we name and things we feel. Arctic Ocean, somewhere north of everything.

There's always one detail that will crack your heart entirely open.

We shouldn’t have to live like this. I’m not THAT old, and I remember we *didn’t* live like this. Powerful segments of society have made a choice that the regular scene of dead bodies in classrooms is an acceptable cost of doing business, and we shouldn’t have to accept that. I’m sad and I’m angry.

Space artists: don’t forget to submit your work to The Art of Planetary Science exhibition by December 31st! The event is held in Tucson. Anyone can submit—all levels & types of human-made art. I’ll be submitting and attending again. 🐡🔭🧪 More details here: lpl.arizona.edu/art

I have been neglecting Uranus system for a long time now. So I decided to change that. Here's Uranus and Miranda visible above the canyons of Ariel. #SciArt #spaceart #astronomy #solarsystem #Uranus

Sam Altman: hey I made a machine that stole literally all your stuff in order to make CSAM of your child actors, sometimes it encourages people to kill themselves Disney: Holy shit here's a billion dollars Altman: the machine loses more than that each week but thank you. Soon it will become god.

New orbit movie just dropped. This one is for the newly discovered circumbinary planet HD 143811 AB b. This 9-year timelapse was made through an international collaboration with me, Nathalie Jones (Northwestern graduate student), and Vito Squicciarini (Exeter postdoc)

Great article about NASA's next planetary defense mission. Planetary defense has a lot of interlocking parts, and all the DARTs we can build won't help if we don't have the Rubin Observatories and NEO Surveyors (and their predecessors and successors) to find problem objects before they find us.

<chef's kiss>

NSF - Forced reorg - POs down ~ 40% (DRP, most rotators not renewed, retirements) - Forced move (and we have to pack and clean) to a building with no furniture, little to no conference space for panels, inadequate 🛜, …) I personally love the boxes they gave us for packing. “Details matter” 🙃

NASA's #InSight mission studied Mars' interior. Amy captured the silhouette of the spacecraft perfectly and, of course, included the seismometer! If you know someone who worked on this mission, please share this one-of-a-kind piece of wearable art with them! sciencesocks.co/collections/... 🧪🐡🎨

From a scorching closest approach to the Sun, to a flight past Venus for a gravity boost – 2025 has been quite a year for our #ESAJuice! Tune in to the latest episode of 'The journey of Juice' to go behind the scenes with the people working on the mission 👇 🔭 🧪

From NASA: Images captured as the Parker Solar Probe made its record-breaking approach to the Sun in 2024 have revealed details about how the Sun can recycle some of its magnetic energy — potentially influencing whether storms impact Earth go.nasa.gov/3MGtuE5 Video: www.youtube.com/watch?v=1iC5...

Well, it sounds like Musk has thought this through as much as he has for living on Mars.

I’ve worked in public libraries for 20 years, today was the first time we’ve had to tell someone they couldn’t bring their chainsaw in the library.

Calling the press “fake news” is harmful. Calling them “seditious, perhaps even treasonous” for publishing reporting is something else entirely. Treason is a capital crime. Suggesting journalists should face it for exercising their First Amendment rights and doing their jobs is dangerous.