David R. Rice
@davidrrice.bsky.social
Astrophysicist and rock-enjoyer. Slartibartfast's apprentice. Postdoc at ARCO, Open University of Israel. PhD from UNLV. Northwestern University Alumni.
I made a travel map generator ✈️🌍
Drop in a list of country codes or names → see your visited & planned trips on a world map.
Runs fully in-browser (GitHub Pages).
Try it here: davidrrice.github.io/TravelMap/
#Travel #Maps
Drop in a list of country codes or names → see your visited & planned trips on a world map.
Runs fully in-browser (GitHub Pages).
Try it here: davidrrice.github.io/TravelMap/
#Travel #Maps
September 29, 2025 at 7:59 AM
I made a travel map generator ✈️🌍
Drop in a list of country codes or names → see your visited & planned trips on a world map.
Runs fully in-browser (GitHub Pages).
Try it here: davidrrice.github.io/TravelMap/
#Travel #Maps
Drop in a list of country codes or names → see your visited & planned trips on a world map.
Runs fully in-browser (GitHub Pages).
Try it here: davidrrice.github.io/TravelMap/
#Travel #Maps
Our new hydrosphere phase diagram is live for Magrathea: github.com/Huang-CL/Mag.... H2O ices, liquid, vapor, and supercritical. Largely inspired by the AQUA phase diagram from Haldemann et al. 2020, but with a couple of our own tweaks and ready to update with future EOS measurements.
September 28, 2025 at 10:11 AM
Our new hydrosphere phase diagram is live for Magrathea: github.com/Huang-CL/Mag.... H2O ices, liquid, vapor, and supercritical. Largely inspired by the AQUA phase diagram from Haldemann et al. 2020, but with a couple of our own tweaks and ready to update with future EOS measurements.
Once you have these it's easy to draw sillier reference frames like alpha Centauri A centric-frame or even better the Charon-centric frame.
August 20, 2025 at 11:56 AM
Once you have these it's easy to draw sillier reference frames like alpha Centauri A centric-frame or even better the Charon-centric frame.
Spent a day re-convincing myself that I know what an orbit is. Here are the barycentric orbits of Pluto-Charon and Alpha Centauri AB with correct proportions. Fun is that the radii of Pluto and Charon are even to scale with the orbit. #planetsci
August 20, 2025 at 11:56 AM
Spent a day re-convincing myself that I know what an orbit is. Here are the barycentric orbits of Pluto-Charon and Alpha Centauri AB with correct proportions. Fun is that the radii of Pluto and Charon are even to scale with the orbit. #planetsci
My MIL handed me pharma-grade DMSO for mosquito bites. Not FDA approved, but my self-study found it more statistical significance than DMS on K2-18b. #exoplanets
July 21, 2025 at 2:06 AM
My MIL handed me pharma-grade DMSO for mosquito bites. Not FDA approved, but my self-study found it more statistical significance than DMS on K2-18b. #exoplanets
Our new preprint just hit the arXiv: arxiv.org/abs/2507.10942 💥 We take a look at how the core mass fraction of planets may change through galactic time. My largest contribution is this plot with the planets from Weeks et al. 2025 reanalyzed with our interior model. 🔭🪐
July 16, 2025 at 3:13 AM
Our new preprint just hit the arXiv: arxiv.org/abs/2507.10942 💥 We take a look at how the core mass fraction of planets may change through galactic time. My largest contribution is this plot with the planets from Weeks et al. 2025 reanalyzed with our interior model. 🔭🪐
Preparing to trade salt for fresh water—can you guess where I’ll be working next?
Big move next summer, big science starting sooner. Excited for what’s ahead in 2026!
Big move next summer, big science starting sooner. Excited for what’s ahead in 2026!
July 12, 2025 at 6:39 PM
Preparing to trade salt for fresh water—can you guess where I’ll be working next?
Big move next summer, big science starting sooner. Excited for what’s ahead in 2026!
Big move next summer, big science starting sooner. Excited for what’s ahead in 2026!
I get a bit carried away with @matplotlib.org's hatching. But it's so helpful! The left plot you can pick any point in the middle and pretty quickly tell which 4 hatch marks are overlapping.
May 4, 2025 at 11:43 AM
I get a bit carried away with @matplotlib.org's hatching. But it's so helpful! The left plot you can pick any point in the middle and pretty quickly tell which 4 hatch marks are overlapping.
...and how to transform the ternary to WMF - R-CMF plot.
I think we're up to at least 10 groups using MAGRATHEA, our interior modeling code, and we're always excited for new users! github.com/Huang-CL/Mag...
I think we're up to at least 10 groups using MAGRATHEA, our interior modeling code, and we're always excited for new users! github.com/Huang-CL/Mag...
April 24, 2025 at 8:47 AM
...and how to transform the ternary to WMF - R-CMF plot.
I think we're up to at least 10 groups using MAGRATHEA, our interior modeling code, and we're always excited for new users! github.com/Huang-CL/Mag...
I think we're up to at least 10 groups using MAGRATHEA, our interior modeling code, and we're always excited for new users! github.com/Huang-CL/Mag...
Our new planet interior paper is accepted and up on arXiv, arxiv.org/abs/2504.16201! Explore all the knobs you can twist when modeling an Earth-like planet, in this case Trappist-1 f.
Don't miss the appendix where I detail the "correct" way to plot a ternary diagram (below)....
#exoplanets 🔭🧪🪐
Don't miss the appendix where I detail the "correct" way to plot a ternary diagram (below)....
#exoplanets 🔭🧪🪐
April 24, 2025 at 8:47 AM
Our new planet interior paper is accepted and up on arXiv, arxiv.org/abs/2504.16201! Explore all the knobs you can twist when modeling an Earth-like planet, in this case Trappist-1 f.
Don't miss the appendix where I detail the "correct" way to plot a ternary diagram (below)....
#exoplanets 🔭🧪🪐
Don't miss the appendix where I detail the "correct" way to plot a ternary diagram (below)....
#exoplanets 🔭🧪🪐
Ah! I forgot to post when my newest paper was published in Sept. We find that in exoplanet systems with complex spacings between multiple planets (C) there are less sub-Neptunes and more super-Earths. The radius valley and peas-in-a-pod are related:
iopscience.iop.org/article/10.3...
iopscience.iop.org/article/10.3...
November 19, 2024 at 9:01 AM
Ah! I forgot to post when my newest paper was published in Sept. We find that in exoplanet systems with complex spacings between multiple planets (C) there are less sub-Neptunes and more super-Earths. The radius valley and peas-in-a-pod are related:
iopscience.iop.org/article/10.3...
iopscience.iop.org/article/10.3...
I will be shamelessly reposting my old tweets. 🔭
November 17, 2024 at 12:06 PM
I will be shamelessly reposting my old tweets. 🔭
Movie poster out for what will surely be a hit film!
The movie poster perfectly captures Nicholas Hoult debating how many of his own publications to recommend the authors cite.
#AcademicChatter #phdlife #Reviewer2
The movie poster perfectly captures Nicholas Hoult debating how many of his own publications to recommend the authors cite.
#AcademicChatter #phdlife #Reviewer2
October 3, 2024 at 3:01 PM
Movie poster out for what will surely be a hit film!
The movie poster perfectly captures Nicholas Hoult debating how many of his own publications to recommend the authors cite.
#AcademicChatter #phdlife #Reviewer2
The movie poster perfectly captures Nicholas Hoult debating how many of his own publications to recommend the authors cite.
#AcademicChatter #phdlife #Reviewer2
I need a new break-time distraction. What's something that you can do at work that takes your mind off of things? Currently I move men around a map online, but I'm losing sleep over it.
August 20, 2024 at 8:58 AM
I need a new break-time distraction. What's something that you can do at work that takes your mind off of things? Currently I move men around a map online, but I'm losing sleep over it.
Michael, the other postdoc in my group, kept my rattlesnake plant alive for a year! So nice to be back in my desk that sat empty for most of the year at the Open University.
July 29, 2024 at 11:47 AM
Michael, the other postdoc in my group, kept my rattlesnake plant alive for a year! So nice to be back in my desk that sat empty for most of the year at the Open University.
Ever had an unyielding desire, to see EVERY confirmed planet all at once? No, just me?
Enjoy a long scroll at davidrrice.github.io/ExoSystemPlo... It's only about 14 meters long.
(works best on desktop)((only transiting planets, sorry to the less cool discovery methods)) #Exoplanets 🪐🔭
Enjoy a long scroll at davidrrice.github.io/ExoSystemPlo... It's only about 14 meters long.
(works best on desktop)((only transiting planets, sorry to the less cool discovery methods)) #Exoplanets 🪐🔭
March 27, 2024 at 8:43 PM
Ever had an unyielding desire, to see EVERY confirmed planet all at once? No, just me?
Enjoy a long scroll at davidrrice.github.io/ExoSystemPlo... It's only about 14 meters long.
(works best on desktop)((only transiting planets, sorry to the less cool discovery methods)) #Exoplanets 🪐🔭
Enjoy a long scroll at davidrrice.github.io/ExoSystemPlo... It's only about 14 meters long.
(works best on desktop)((only transiting planets, sorry to the less cool discovery methods)) #Exoplanets 🪐🔭
First time being upside down! Traveling around NZ before ExSS
March 12, 2024 at 8:31 AM
First time being upside down! Traveling around NZ before ExSS
You might be used to seeing the Trappist-1 planets on super tiny orbits. But what if you take Mercury's period and put it around T1, aka where is an 88 day orbit in the T1 system? Well here it is!
I've wanted this plot for a long time so finally made it.
I've wanted this plot for a long time so finally made it.
March 1, 2024 at 10:32 PM
You might be used to seeing the Trappist-1 planets on super tiny orbits. But what if you take Mercury's period and put it around T1, aka where is an 88 day orbit in the T1 system? Well here it is!
I've wanted this plot for a long time so finally made it.
I've wanted this plot for a long time so finally made it.
Meet TOI-1751 b, a warm Uranus around a sun-like star, which I "helped discover"! Orbiting its star in just 37 days, it most likely has an interior of super-critical water under a relatively small atmosphere. Paper arxiv.org/abs/2402.07110.
February 13, 2024 at 2:49 PM
Meet TOI-1751 b, a warm Uranus around a sun-like star, which I "helped discover"! Orbiting its star in just 37 days, it most likely has an interior of super-critical water under a relatively small atmosphere. Paper arxiv.org/abs/2402.07110.
Fighting with a Reddit user about if moons orbit the sun, we keep going in circles, quite hilarious.
December 20, 2023 at 3:39 AM
Fighting with a Reddit user about if moons orbit the sun, we keep going in circles, quite hilarious.
Thrilled to visit Yerkes Observatory! The passionate but small staff made our mini-tour unforgettable. Walking in the footsteps of Hubble, Kuiper, Chandrasekhar, Roman, and Sagan was truly inspiring!
December 18, 2023 at 6:13 PM
Thrilled to visit Yerkes Observatory! The passionate but small staff made our mini-tour unforgettable. Walking in the footsteps of Hubble, Kuiper, Chandrasekhar, Roman, and Sagan was truly inspiring!
10 years ago I failed my first every Astronomy midterm. At least the whole class failed.
October 25, 2023 at 4:39 AM
10 years ago I failed my first every Astronomy midterm. At least the whole class failed.
Classic AoT Vegas final question.
Put in order from smallest to largest:
A. Years since the discovery of a variable star in Andromeda
B. Number of keys on a grand piano
C. Number of countries recognized by the United Nations
D. Traditional number of collectible Power Stars in a Super Mario game
Put in order from smallest to largest:
A. Years since the discovery of a variable star in Andromeda
B. Number of keys on a grand piano
C. Number of countries recognized by the United Nations
D. Traditional number of collectible Power Stars in a Super Mario game
October 6, 2023 at 1:38 AM
Classic AoT Vegas final question.
Put in order from smallest to largest:
A. Years since the discovery of a variable star in Andromeda
B. Number of keys on a grand piano
C. Number of countries recognized by the United Nations
D. Traditional number of collectible Power Stars in a Super Mario game
Put in order from smallest to largest:
A. Years since the discovery of a variable star in Andromeda
B. Number of keys on a grand piano
C. Number of countries recognized by the United Nations
D. Traditional number of collectible Power Stars in a Super Mario game
After using the clip art on 3 talks, I wonder how many people I've confused by the falling petunias.
Great time presenting at the first exoVAST! They need more speakers on exoplanet software. emac.gsfc.nasa.gov/seminars/
Great time presenting at the first exoVAST! They need more speakers on exoplanet software. emac.gsfc.nasa.gov/seminars/
September 20, 2023 at 7:13 PM
After using the clip art on 3 talks, I wonder how many people I've confused by the falling petunias.
Great time presenting at the first exoVAST! They need more speakers on exoplanet software. emac.gsfc.nasa.gov/seminars/
Great time presenting at the first exoVAST! They need more speakers on exoplanet software. emac.gsfc.nasa.gov/seminars/
New apartment and this new zoom background is fire. Accurate camera quality.
August 18, 2023 at 11:27 PM
New apartment and this new zoom background is fire. Accurate camera quality.