Anyone with eclipse shades (or a welder's mask) and clear skies should check out this massive sunspot 4466. 10x larger than the Earth, you can see it's *shape* with the naked eye. Incredible ☀️

Which is cat, and which is folded sweater? 🐈‍⬛

As far as I can tell, the Schmidt Observatory System is essentially “what are the best next-gen facilities coming online in the future? Ok yea let’s just build all of them nice and fast and synergize them w the rest of the community.” Incredible 📡🔭🔭🛰️

How cool is this - Cal Poly Pomona and SLO's float, the only one designed and built entirely by students, won the Rose Parade. The float's message is about the dangers of climate change, with a bunch of cute woodland animals repairing a damaged robot 🤖 www.cpp.edu/news/content...

Skydivers landing at Arizona Stadium?? #Tucson

Hey Martians, did I mention we now also have a video of epic Phobos passing over a Martian dust storm near Pavonis Mons? 🌪️🌋🥔 Video & full info: flic.kr/p/2rNN8wk Credit: ESA/DLR/FUBerlin/AndreaLuck CC BY @esa.int Mars Express HRSC 300 MP Photo quoted below Easy zoom: easyzoom.com/image/674026

I'm very happy I woke up at 4am this morning to catch 3I/ATLAS right before its closest approach to Earth (today!) This interstellar visitor is traveling over 60 km/s ☄️ At 269 million km (1.8 AU), I took a series of 2.5 min exposures with my Seestar 🔭

Just a little PSA - if you have any solar eclipse shades (or a welder's mask), you should try and check out the massive sunspot group that has rotated into view these past few days. It looks so big it may be naked-eye visible, which is pretty neat!

Today’s big Thanksgiving goal is to finally, after all these decades, beat 7th Saga 🎮 🐈‍⬛

Different setup today - go Cats! 🏈🍸

🎙️ and Bok Choy's got Hogan down for the count!! 🐱🤼

Shoot, they're renaming Arizona Stadium to the Casino Del Sol Stadium. I always liked that we had a normal stadium name without a dumb corporate name, but $60M I guess 🤷 arizonawildcats.com/news/2025/11...

Kitty Peak National Observatory 🐱 I have no idea where I stumbled on this but it's in my photos from the summer of 2020. And I love it! 🔭 Is the 90" supposed to be a cat tree? #astronomy #cats

Go cats! Bear down!🐱 🏈

What a title for a paper lol ☄️😳 Out of 10 billion simulated, ten thousand strike the Earth. arxiv.org/abs/2511.03374

Watching dopey Penn State in the new place 🏈

I'm gonna try posting to this blog each week. Back in Twitter's day I shared a lot of shuttle and space tidbits I thought were neat, and then used Twitter as a look-up reference. Now this blog will serve that role - I figure I might as well share it! 🚀 dennisjust.substack.com/p/oms-kit

From the makers of the Apollo in Real Time websites comes a new experience with 500 times more data. ISS in Real Time offers the chance to explore more than 9,000 days of photos, video and audio transmitted during the 25 years of continuous human residency on the International Space Station.

Fresh JWST view of Uranus taken Oct 6 2025 with NIRCam. Full size & more info: flic.kr/p/2rByidu 🔭🧪 Credit: NASA/ESA/CSA/STScI/Andrea Luck CC BY Proposal PI: Varun Bajaj Proposal ID: 8975 Filters: F150W2-F162M, F410M

Explaining Disco Elysium to my normie fiance... not an easy task 🍾🕺🏚

I usually don't have live plants in my office, since I work from home and other campuses all the time so I don't spend too much time there, but I grabbed this little fella on an impulse and I'm glad I did 🌱

A Long March 2D stage falling to Earth in Guinan county, Qinghai, following the launch of Shiyan-31 from Jiuquan on Oct. 13. Video: m.weibo.cn/detail/52219...

If this was space debris, that is absolutely wild and terrifying 😳 arstechnica.com/space/2025/1...

Today in Portland, a fed shooting pepper balls from the roof of the ICE facility was so eager to aim for people’s heads, that after shooting one photographer in the head and another in the upper arm, they accidentally shot a DHS agent in the head. This photo shows the moment of impact;

As a Kid Dynamite fan in the 90s - let’s go Mariners!

@gregdoucette.bsky.social Sorry if this is duplicate but your tracking of puppicide was always useful via Fsck em all

Are you someone who is interested in astronomy graduate school? This is a list of many/most departments and their expectations for admissions this year. Please feel free to spread it far and wide. If you are doing admissions and you'd like to update your entry, reach out as per the form!

No shutdown here, we're still uploading ! www.wikiarchives.space

There we GO! 🏈 Let’s go State

Saw the University of Arizona is on the list. Hope they stand up for what's right 🌵 apnews.com/article/trum...

I dunno if I’ve ever been this close to lightning before. Downtown Tucson is getting hammered right now, and my windows are shaking w each bolt 😨

Is it me or do we not even bother with adding “-gate” to this admin’s corruption and scandals? Between the relentless cadence and the deference the media shows. It’s shameful.

"Can LIGO Detect Daylight Savings Time?" "Yes, it can." Lol this is awesome. LIGO's detection probability varies with weekends vs weekdays, day vs night, and daylight savings time vs standard time. Some fun figures in here ☀️ arxiv.org/abs/2509.11849

Robert Redford did so many great movies, but one I think of right away was 2013’s All is Lost. It is *fantastic*, and has almost zero dialogue. Just relied on Redford’s wonderful acting. RIP 🛥️

Let’s go State! 🏈

When they were planning on flying shuttle from Vandenberg AFB in the 80s, a number of steps were needed to take the shuttle from the North Base (where it lands) to the South Base (where it launches). Hinged collapsible street signs, security booths on wheels, and new roads to avoid sharp turns ⛰️

What a graphic from Maxwell Zhu and Casey Dreier. I believe in collaborative exploration of space, and it's a shame to watch us disengage from it because our administration is so corrupt and stupid.

He’s just too cool 🐱

I will never not read people writing LFG on social media as looking for group 🎮

Touchdown! Let’s go State 🏈

Heads up #Tucson - there's a scheduled Falcon 9 launch from Vandy at 7:05pm, which is right after sunset. That gives it the potential to be a spectacular view if you look to the western sky. The sky will still be pretty bright, but who knows 🚀 rocketlaunch.org/mission-falc...

So the sandwich guy ... beat the wrap

Move over water worlds - it's time for soot planets 🪐 arxiv.org/abs/2508.16781

Today I learned Pepsi made this incredible can in the '80s 🚀

Posting this just as my own reminder that if I ever want to give Berger the benefit of the doubt, I shouldn't.

I love the look of a fresh COPV 🤩 #Smallsat2025

Candidate giant planet right next door! Astronomers used JWST for three epochs b/t last summer and this spring to view alpha Centauri A (i.e. Rigel Kent), and only detected the object (S1) once. Might've orbited out of view afterwards 🔭 Very cool stuff, hope it holds up! 🪐 arxiv.org/abs/2508.03814

While Loeb's comments about Juno are characteristically bad, here's a group of some excellent planetary scientists talking about Mars spacecraft that could flyby 3I/ATLAS 🛰️ arxiv.org/abs/2507.15755

Fun bit of shuttle trivia nerdery - Columbia is known as the only orbiter with black chines (the narrow, forward part of the wings). However, if you include non-flying orbiters, Pathfinder also had black chines 🚀 📸 - collectspace

Very much enjoyed taking this image of NGC 6992, the Veil Nebula. It's part of the larger Cygnus Loop supernova remnant, so you're only seeing one arc of the shell that was ejected when the star exploded ~10,000-20,000 yrs ago 🦢