Brennan is a Percy Jackson stan confirmed ⚡️
09.03.2026 17:00
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Brennan is a Percy Jackson stan confirmed ⚡️
20yrs ago we knew of maybe a few thousand stellar rotation periods. Kepler/K2 was a massive step to about 50k. This is the next, and most dramatic leap in our understanding! Bravo!!!!
Apache Point Observatory, much closer to White Sands than VLA, just up the mountain from Alamogordo.
“Every record has been destroyed or falsified, every book has been rewritten, every picture has been repainted… every date has been altered... History has stopped. Nothing exists except an endless present in which the Party is always right.”
- 1984, George Orwell
Applications are open for our visiting grad student pre-doctoral program at the CCA @flatironinstitute.org !
More info here:
www.simonsfoundation.org/2023-flatiro...
Please know, in the era of "Big Data", Rubin, etc... I will never answer a single inquiry about "I found this thing in my data..." if the next sentence isn't "...and I looked directly at the data" or similar.
Your critical & physical reasoning skills cannot be outsourced.
Because “looking at images, not catalogs” is a dying pastime, the paper includes a tutorial on -how- to interpret images of galaxies. Qualitative information alone can get you a surprisingly long way towards a reasonable model, if you’re thinking through the links between morphology and physics.
We are a secular democracy. If you don't like the freedom of religion, you are welcome to move somewhere else.
In America, you can be Christian, Muslim, Jewish, or anything else. It's written into our Constitution. 🇺🇸🇺🇸🇺🇸
Get lost with this garbage.
Ahhhh, OK so they do trigger, but not briefly. Those timescales makes sense given the passage speed of nearby stars from Gaia
I'm trying to choose a textbook about galaxies & cosmology for 2nd year astronomy majors.. any recommendations?
Interesting, I will admit I did not know either of these were settled! I’ve certainly seen passing stars as comet triggers discussed lately
The late great. Miss his amazing astrophotography content 💔
I’m looking for speakers for a London event on the science of Star Trek. I’d really appreciate suggestions from underrepresented minorities in STEM, especially PoC/global majority.
(10 min, central London, Sept, currently unpaid but I’m trying to fix that)
Feel free to message
question for the astronomy hive mind, does anyone have a J band spectrum for the white dwarf standard HZ 4? will offer
- a beer or coffee at the next conference if there's a reference I've missed,
- coauthorship and eternal gratitude if failing that anyone can take a spectrum
* explicitly
Not just “we need this now, and it’s in an archive so maybe it will be useful eventually again” but also more of the “we should take this data because someday it might be useful”
TESS is a decades timescale instrument!
And yeah… there’s a lot of inter-generational discovery that needs to happen, and we should do more to enable it explit
Fast timescale astronomy gets all the glory these days, but I’ll continue to argue that the really interesting stuff right now is years to decades.
This can happen with “Post AGB” stars, leaving the last phase of giant star, pushing off their outer atmosphere to reveal a new white dwarf. For example, check out SAO 244567, central star of the Stingray Nebula, which has rapidly changed color!
en.wikipedia.org/wiki/Stingra...
I love seeing graphs like this… most stars don’t change color, but some do! On short timescales (hours) little red stars have bright blue flares. But over years, a small number of stars can change their entire color (i.e. temperature)!
Light curves of WOH G64.
Massive stars usually evolve gradually over millennia, but according to an article in Nature Astronomy, extreme star WHO G64 shifted from red to yellow in just a year, prompting the question whether this is due intrinsic instability or interaction with a hidden companion.
go.nature.com/4cYLEMp 🔭 🧪
Do you already have a Masters? Do you want to do a PhD in exoplanet radial velocity surveys with me at Macquarie University in Sydney?
Then have I got an ad for you!
Had the full rehearsal this evening for Ignite Seattle 50!! I laughed so much. I teared up from two talks. I saw 12 near-strangers give a ton of love and support for each other’s stories.
If you’re in Seattle next week, come to the show!!
igniteseattle.com/event/ignite...
🔭 Apply now for the John N. Bahcall Public Policy Fellowship to learn first-hand about policymaking while contributing your knowledge and analytical skills to the federal policymaking process.
Applications due by 15 April: aas.org/form/john-n-...
@policy.aas.org
The headline today is: "markets tumble as Iran conflict intensifies"
instead of: "illegal war claims innocent lives"
(Also WA) my memory is that permanent DST isn’t allowed unless Feds sign off. Permanent Std time would be implemented. My conspiracy theory is republicans campaign for DST knowing it won’t be deployed, so they can forever complain about gov’t not working
The kids continue to be alright. It’s the rest of us that should be tossed out the nearest airlock
Oh man. We’re like mortal enemies now. This is some supervillain origin story shit.
I think that’s exactly how we end up in this situation. Everyone agrees that switching time zones is horrible. When you phrase the question as “wouldn’t it be nice if we never stopped changing?!” It is wildly popular.
So yes, I agree, any one is better than switching
Standard Time or GTFO. Please LMK if you support permanent DST so I can block and unfollow you