Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 3hGood moonrise, good dogs. Our planet is really a neat one. Worth fighting for. 226 6
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 9hNeed something else to scream about? The CRASH Clock outerspaceinstitute.ca/crashclock is now down to 1.8 days, as of this weekend. 0120 12
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 10hThis week is bad, but next week everyone (really, everyone) will show up at the wrong time to all their meetings whether or not they are in a place that does daylight savings time... I guess I should give myself some slack on this, since even Weather Canada can't get it right, apparently??? 020 2
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 25/10/2026[animal husbandry] Meet this year's buck: Lord Buckingham! (He gets a fancy name because he was way too expensive). He seems happy now that he's got a wether for a buddy and a lot of hay and a little grain snack. Welcome, sir! The female goats can already […] [Original post on mastodon.social] 204 4
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 25/10/2026Barn cat update: he's now named "Spook" because he's mostly white and it's close to Halloween. Devil cat (surprisingly not named for Halloween, named for chomping me as a kitten, she's actually quite a sweet cat now) really does not like Spook, but he just […] [Original post on mastodon.social] 000 0
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 25/10/2026Started the morning with ridiculously high winds and a little bit of snow. Went into the city (found that there was no snow in the city) and bought perhaps a bit too much yarn from a bunch of local fibre producer fair. Came back home and took the squash out […] [Original post on mastodon.social] 004 4
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 23/10/2026This is a pretty good one too 010 1
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 23/10/2026By the time I get to Friday afternoon I've got no concentration left for writing. But I can still mess around with data visualization apparently. Please enjoy a silly movie version of some of the resonant behaviour plots I shared last Friday. 223 3
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 23/10/2026The new barn cat was meowing away at me as soon as I walked into the barn. It hung around while I milked the goats, didn't seem to bother the other 2 barn cats much, and fully expected me to feed it along with the other barn cats. I very briefly patted it […] [Original post on mastodon.social] 121 2
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 23/10/2026Good sunset and moonrise. Now time for 🎵 another stupid zoom meeting because time zones are haaaarrrrd and about to get harder 🎵 001 1
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 22/10/2026Looks like today is going to be the last nice day, maybe until April. And I have to teach and get my flu/covid shots and have a bunch of meetings indoors. LAME. 122 2
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 21/10/2026I have to fill in a bunch of US gov't forms to be an unfunded co-I on a NASA grant and this message is sitting at the top of every page making me want to rage-scream and throw my laptop out the window 5108 10
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 21/10/2026I woke up at 3:30am and couldn't get back to sleep. Luckily there were auroras and good stars, so I put on my snowsuit over my pajamas and got some nice photos. Going to be a very long day though. Starting with an important meeting that will be 100% […] [Original post on mastodon.social] 21914 19
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 21/10/2026[SpaceX-related screaming into the void] Uhhhhh WOW one of Kardashev's own papers includes this completely unhinged figure... 032 3
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 20/10/2026I made this plot to try to visualize how crowded these sun-synchronous terminator orbits are going to get with all the "orbital AI data centres" that companies want to launch. Diagram needs a bit of work still, but it's a start. These names are awful, huh? […] [Original post on mastodon.social] 184 8
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 19/10/2026Ooof I started grumpy posting way too early today. Let me start over and try again. Good morning. 2025 25
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 19/10/2026I also found a buck! Way more expensive than I wanted, but from a herd that's very unlikely to have diseases, and he's a fancy purebred Saanen. I actually bought a buck from this same woman 5 years ago and my best milkers are his offspring. I don't really […] [Original post on mastodon.social] 103 3
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 19/10/2026It took most of the day, but we finally took the rail off the barn, dug out all the rotten wood it was attached to, replaced it with new wood (well, nice wood that came with the farm), bought a new rail section to replace the one that was hopelessly warped […] [Original post on mastodon.social] 214 4
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 17/10/2026Lovely bike ride! We had a couple of very windy days, so most of the fall colour is already gone off the trees. Not too many animals out besides birds, and most of the birds have migrated away already. But I saw a grouse, and some good footprints (deer, moose […] [Original post on mastodon.social] 113 3
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 16/10/2026This is showing the behaviour of the equation below with different values of m and n. This is using the measured orbital elements of a real TNO, showing how it's constrained by Neptune on long timescales. Mean-motion resonances are SO COOL and I'd much rather work on this than satellite pollution. 111 1
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 16/10/2026Oh this is good too. You don't even need to know anything about what this is showing, it's just neat looking. 203 3
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 16/10/2026At least I finished a cool plot for the incredibly obscure mixed-mode resonant dynamics paper that maybe someday I'll actually get to finish writing. 413 4
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 15/10/2026Here's our new map of the outer Solar System: we detected and tracked 141 TNOs to high precision, 62 of which are in mean-motion resonances with Neptune. There's a tiny bit of science work testing a model of the hot classical belt orbital distribution, but […] [Original post on mastodon.social] 122 2
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 15/10/2026Sometimes TNOs show different behaviours in different parts of the orbital uncertainty. But most of the time our orbits were precise enough (and the phase space for different behaviours large enough) that the current dynamical behaviour of the real TNO is very clear. 110 1
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 15/10/2026We diagnosed resonances by taking clones of the TNOs' best-fit orbits within the orbital uncertainties, and integrating them forward for 30 million years using REBOUND, then carefully looking at the resonant angle of several nearby resonances to see if it's […] [Original post on mastodon.social] 110 1
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 15/10/2026The point of this survey was to find moderately high inclination TNOs, specifically, Plutinos in the 3:2 mean-motion resonance with Neptune that are also in the Kozai resonance. We picked 2 patches on the sky that we knew from models would probably have lots […] [Original post on mastodon.social] 120 2
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 15/10/2026It sounds like something truly terrible is happening to these goats. The truly terrible thing that's happening? I am not walking fast enough toward them with the evening grain bucket. Poor poor goats. 71125 25
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 12/10/2026The goats are very unhappy that they had to walk from one barn to the other and are now refusing to come out. The chickens won't even try. But the ducks and geese are delighted. They love snow! 204 4
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 12/10/2026Well, shit. At least it's pretty, I guess? Happy Thanksgiving... 4013 13
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 12/10/2026I had an incredibly lovely, tasty, fun, relaxing day with my partner and kids. I'm really grateful. Tomorrow is a holiday here but I have a bazillion very stressful things I need to work on writing, so I should probably mostly do that. It's also supposed to […] [Original post on mastodon.social] 4016 16
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 11/10/2026Fall is pretty!... ....short. It might snow tonight. 1012 12
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 10/10/2026Happy goats, delighted to eat invasive leafy spurge, burdock, and wormwood. Might be the last new grass patch they get this year before all the grass dies from cold weather and they switch to eating hay until like... May. We'll see... 012 2
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 08/10/2026First snow in the forecast. Sigh. 110 1
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 05/10/2026If I only share pretty pictures of the sky will that make the satellites go away? (I know the answer to this question... back to work...) 208 8
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 05/10/2026It's the kind of auroras right now where it just looks like a greenish smudge to your eyes, but then you take a photo and it's ABSOLUTELY INCREDIBLE Please enjoy this lovely instrument (a camera) that lets us see a bunch of colours too faint for our eyeballs! 22044 44
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 03/10/2026Fall is my absolute favourite season here. (I just have to not let myself think too much about the next season...) 105 5
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 03/10/2026Goats are on patrol out in the woods eating invasive leafy spurge (and everything else, but all the plants around here evolved to be eaten by buffalo, so they can handle some goat nibbles) 4112 12
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 03/10/2026A neighbour was out very late last night finishing up the harvest. A bit more light pollution than usual in photos, but found a tiny bit of auroras, and it was late enough that there weren't many satellite streaks. Yay. 041 4
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 02/10/2026You can still get photos with few/no satellite streaks, but it's hard (of course there's software processing to get rid of streaks, but that's not my point here). While there are still lots within ~2 hours of sunrise and sunset, we're getting to the time of […] [Original post on mastodon.social] 043 4
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 02/10/2026[incredibly depressing, satellites] So many satellite streaks in 13 second exposures (and one airplane, you can tell because it's dashed) 248 8
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 02/10/2026Feeling very stressed about everything, and I went out to do some astrophotography. I was hoping for auroras, and was first excited to see an orange glow on the horizon, then annoyed as I realized it's probably a combine, then delighted again as I realized […] [Original post on mastodon.social] 3036 36
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 01/10/2026They did a pretty good job! Only a few corn stalks left! 000 0
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 30/09/2026Post-frost garden cleanup done the best possible way 6040 40
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 30/09/2026Today is Truth & Reconciliation Day. I am grateful to live on Treaty 4, the land of the nêhiyawak, Anihšināpēk, Dakota, Lakota, and Nakoda, and the homeland of the Métis/Michif. To share my land with local Indigenous people in the original spirit of this […] [Original post on mastodon.social] 0029 29
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 29/09/2026I just started writing up complaints about several different things. And it's all just so far beyond what I can even complain about. So please enjoy these cats while keep writing about the terrible shit that's happening in orbit until my brain switches off for the night. 080 8
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 28/09/2026Day 2 of the horse trailer trial also went really well! Loading the goats is still a bit chaotic (and today the livestock guardian dog ended up in the middle of all the goats in the trailer briefly (there's a little door that he can get out that the goats […] [Original post on mastodon.social] 100 1
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 27/09/2026Academia is so freaking weird. Part of my job as a professor is actually to occasionally cosplay as a medieval wizard while helping hand out scholarships. 023 3
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 27/09/2026We recently bought a horse trailer from a neighbour and today was the first day we successfully herded all the goats into it (lured with a bin of apples), drove the goats to a different part of the farm in the trailer, set up the electronet fence and portable […] [Original post on mastodon.social] 5114 14
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 27/09/2026I don't want to talk about satellites and genAI (though I appreciate all the comments in my mentions. I just need a little break) I want to talk about goats and squash! Positive things I can directly affect! (Well, goats are you know, goats. So there are some limits to directly affecting them.) 5129 29