Stefan Payne-Wardenaar
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stefanpw.bsky.social
Stefan Payne-Wardenaar
@stefanpw.bsky.social
I make astronomy (and other science) visualizations in Blender.
I lured them all to one side of the map, covering the retreat with AoEs (Wall of flame, spike growth, fireball, explosive arrows). Only one character lost more than temp HP.
November 5, 2025 at 1:10 PM
Jumping into the grit of Owl House finales/climaxes but right away :)

Frankie! <3

Aww that's cute, she's missing some teeth, must have gotten into some scrapes!
(Later) ... Oh ...
September 20, 2025 at 7:33 PM
You made me rethink assumptions about my own OCs...

Enhancing my tomboy's early frustration, maybe they were not fast friends, but after learning more and standing up for each other they became friends. That's probably more narratively satisfying and engaging, highlighting her struggles and flaws.
August 12, 2025 at 11:49 PM
What kinda changes? O3o
August 12, 2025 at 5:00 AM
Technically incorrect: while 46.5 bly is the current radius of the observable universe, unless expansion slows light will be too slow to ever reach objects at that proper distance.
August 10, 2025 at 1:32 PM
Thanks for the correction: I misremembered the timeframe of PMS stars.

Which reminds me of an anecdote from a geo prof: Many people once thought the Sun shone from gravitational collapse alone, until radiometric dating showed the earth was much older than the ~20my that would last!
July 22, 2025 at 3:30 PM
That two independent teams predicted it last year has my hopes up.

That it's supposedly a way younger pre-MS star is crazy (if true).

Urge to animate it... But I've got plenty of other work to get through first ;p
July 21, 2025 at 8:00 PM
July 17, 2025 at 12:13 PM
Iggy is down by the student camp / basement entrance.
July 17, 2025 at 11:38 AM
<3. Carcharo? Giga?
June 15, 2025 at 1:30 PM
Nice looking Milky Way at 1:55, atleast ;)
May 31, 2025 at 11:27 AM
That closeup shot with the egg is by far my favorite shot from ep 1
May 27, 2025 at 7:41 PM
Here's the paper. arxiv.org/abs/2309.07209
Tilted ~30 degrees they suggest, and probably not quite that thin (but still 'triaxial': different x, y, z lengths).
Hmm, I might be underestimating the flare in my model...
A Tilted Dark Halo Origin of the Galactic Disk Warp and Flare
The outer disk of the Milky Way Galaxy is warped and flared. Several mechanisms have been proposed to explain these phenomena, but none have quantitatively reproduced both features. Recent work has de...
arxiv.org
May 23, 2025 at 2:16 AM
Our supermassive black hole (Sag A*) is 4.3 million solar masses... but the Milky Way is about 1.5 trillion.
Several thousand stars directly orbit the central black hole, but unlike in the solar system, things orbit the center of mass of the whole galaxy (icl dark matter whch dominates further out)
May 23, 2025 at 1:57 AM
All spiral galaxies are rather flat like this, the up and down motion of gas tends to cancel out, making the thin disk of newer stars pretty thin. We can measure this directly now with GAIA, along with just the visual clue Galileo figured out that the Milky Way appears as a band.
May 23, 2025 at 1:52 AM
It uses data on real stars and dust near the sun, then transitions to procedural details further out, informed by H.

It's made in Blender, using a number of base-textures constructed from data and Hubble images,then used to inform procedural volumetrics and star particles!
(it's stupid complicated)
May 23, 2025 at 1:48 AM
This is my rendering. It incorporates some new data where possible (on the structure of dust near the sun, a new angle of the bar, etc), but is a best-guess for areas further out.
May 23, 2025 at 1:44 AM
The two main proposals to explain the warp are that it's caused by a colliding dwarf galaxy (probably Sag dSph, seen faintly bottom left of center), or from a non-spherical dark matter halo.
The Galaxy Song
YouTube video by StefanPW
youtu.be
May 23, 2025 at 1:42 AM
I made a version of that song with my old galaxy model and some updated lyrics.
Need to make an updated one with my new model... and better singing / music ;p

youtu.be/hFGXmO5GqeQ?...
The Galaxy Song
YouTube video by StefanPW
youtu.be
May 23, 2025 at 1:41 AM