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James Tuttle Keane

@jtuttlekeane.bsky.social

planetary scientist 🪐 JPL 🚀 science illustrator 🎨 trekkie 🖖 dog dad 🐶 Pasadena 🌹 views are my own 🏳️‍🌈 he/him

321 followers5 following14 posts

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JTjtuttlekeane.bsky.socialDec 11, 2023 3:14am

Hello #AGU23!

A selfie of me, standing in Union Square in San Francisco, CA — which I am visiting for AGU (american geophysical union). I’m wearing my “I am Kenough hoodie, and nice glasses. Behind me is the very brightly lit christmas tree, with a red star on top. Behind that is Macy’s, with its wreaths in all windows. It’s a beautiful night!

JTjtuttlekeane.bsky.socialNov 29, 2023 4:09pm

Hey scientists, don’t use AI generated artwork. Hire an artist. #OPAG2023

Reposted by James Tuttle Keane

ERplanettreky.bsky.socialOct 24, 2023 3:49pm

The Planetary Science and Astrobiology Decadal Survey, Origins Worlds and Life, is now fully available WITH figures! nap.nationalacademies.org/read/26522/c...

JTjtuttlekeane.bsky.socialOct 13, 2023 2:14am

For All Mankind season 4 trailer dropped—and it looks like they’re ready for NASA’s “asteroid autumn.” What can go wrong with mining a rubble pile asteroid? 😬 #ForAllMankind #AsteroidAutumn

JTjtuttlekeane.bsky.socialOct 8, 2023 2:35am

What doesn’t come across in that first photo (and because I can’t post videos here) is that the gel pens are sparkly ✨🛰️✨

an oblique photo of the previous sketch, showing three spacecraft, drawn with a variety of gel pens. It shows JUICE, Juno, Europa Clipper. With this oblique view, you can really see some of the sparkling, particularly on Clipper. It’s very pretttyyy.

JTjtuttlekeane.bsky.socialOct 8, 2023 2:30am

The Juno open science team meeting is giving me an opportunity to play with some new tools… like my sparkly gel pens, and rainbow pencil. ✨🛰️🌈✨

A photo of a sketch of three spacecraft that currently, or will eventually, orbit Jupiter: Europa Clipper (blue, bottom); Juno (red, middle); JUICE (green, top). These are simple line sketches, showing almost orthographic, blueprint like views of the spacecraft. The most prominent features of each are their big solar arrays and high gain antennas. The drawing is in my sketch/science notebook, and some pens are on the side to give a sense of scale. The most fun part: I used sparkly gel pens for these, so it flickers in the light.

A sketch of the Juno spacecraft (and a few moons in the background). It’s drawn with a rainbow pencil, so the colors vary wildly along the lines, from purples to reds, blues, greens, and yellows. It’s a bit pop art and fun, even if not accurate. It’s all enclosed in a squiggly box. The text in the box identifies the venue: “Juno Galilean Satellite & Radiation Workshop (Oct 7-8 2023, San Antonio, TX)”. The rainbow pencil is off to the side.

JTjtuttlekeane.bsky.socialOct 6, 2023 1:29pm

Rutu Parekh—Europa’s young surface exhibits some dramatic mass wasting, including slides/flows, and even large displaced boulders. These will be interesting places for @EuropaClipper to look at to better understand active processes! #DPSEPSC2023

A sketch summarizing a poster by Rutu Parekh at DPS/EPSC 2023. The sketch is dominated by a large, perspective block diagram showing a ~few kilometer chunk of Europa’s chaos terrain. The chaos consists of isolated, elevated blocks. At the margins of these blocks are steep, gully-rich cliffs that are associated with a relatively limited, diffuse deposit below. These mass wasting deposits come in many flavors, from flows to slumps and individual displaced boulders. The block is colorful, with shades of gray, blue, and yellow/tan. An inset below shows a small, global view of Europa, with Jupiter (and Io) in the background. A couple of colored pencils rest on the notebook to the side, giving a sense of scale.

JTjtuttlekeane.bsky.socialOct 5, 2023 7:48pm

Adeene Denton @spacewhalerider.bsky.social —Pluto’s large moon, Charon, likely formed from a giant impact. New models that include strength of the bodies suggest this may have been more of a “kiss and run” impact, and not as catastrophic as previously thought. #DPSEPSC2023

A sketch of Adeene Denton’s talk at DPS/EPSC 2023. It shows the formation of the Pluto and Charon System from a giant impact. In the top left, you can see an impact are hitting a proto-Pluto. From there there are two different hypotheses: First, is the classic hypothesis of an energetic impact, typically with strengthless or low strength bodies that is very disruptive, and they produce a disk of debris that forms the moon. This is shown in the figure in the top right. Second, is the new hypothesis for a collision between worlds that have some substantial strength. In this case, the impactor is not completely obliterated, but rather “kisses” Pluto before retreating away to become Charon. This is shown in the bottom left. The two hypotheses continue won into the bottom right of the sketch to show Pluto today, with its large moon Charon, and the New Horizons spacecraft zipping by.

JTjtuttlekeane.bsky.socialOct 5, 2023 2:39pm

Alex Berne—Enceladus’s plume output is correlated with the amount of predicted strike-slip motion along the Tiger Stripes. There might be little “pull-aparts” becoming bigger/smaller over the tidal cycle, modulating these eruptions. #DPSEPSC2023

A sketch summarizing Alex Berne’s talk about Enceladus DPS/EPSC 2023. on the top, it shows a plot of Enceladus’s plume output as a function of its mean anomaly around Saturn. There is a well-known observation that the plume output varies as a function of tidal phase, with a peak shifted just slowly after 180°. Most previous models assume that opening and closing of these faults drives this activity, but they have struggled with fitting this observation. In this work, they look at strike slip motion. The bottom figure shows a hypothetical block. Diagram of the tiger stripes slipping in a strike slip sense. The block in the foreground is shifting to the left (as indicated by the large red arrow), and the background block is shifting to the right (indicated by another red arrow). Between the two blocks is a jagged tiger stripe hold with bends in it, and pull a parts that are open by this motion. Jets originate along the faults, and may be particularly focused at these pull aparts.

JTjtuttlekeane.bsky.socialOct 5, 2023 2:38pm

Erin Leonard—Most models of Enceladus’s geysers use simple subsurface structures. However, Earth shows us that subsurface magmatic/fluid systems can be very complex. They’re adapting a model developed by the oil/gas industry to explore Enceladus! #DPSEPSC2023

$A sketch of a talk from DPS/EPSC 2023, showing Erin Leonard’s talk about Enceladus. The major part of the sketch is a block diagram at the top showing the hypothetical subsurface structure beneath a tiger stripe. The block diagram is split into two without a black dash line running down the middle. On the left is a classic, but very simple, model of the Tiger stripe where there is just a open slots filled with water beneath the fracture. On the right, is a much more complex model, and includes a variety of sub surface, conduits and reservoirs, resulting in a tortuous path between the surface and the subsurface ocean. Erin is suggesting that the sub surface structure of Enceladus may be more like the right hand side of this diagram. They are developing a new model to explore fluid flow through complex and fractured material, which they are adapting from a industrial model, originally developed by the oil and gas industry. A little oil rig is shown in the bottom, right.$

James Tuttle Keane

@jtuttlekeane.bsky.social

planetary scientist 🪐 JPL 🚀 science illustrator 🎨 trekkie 🖖 dog dad 🐶 Pasadena 🌹 views are my own 🏳️‍🌈 he/him

321 followers5 following14 posts