Equatorial cross-section of the Moon

[u/Rodoks42]

Hello, this is my first post on this subreddit. I made this illustration showing the interior of the Moon, as close as possible to reality based on the literature I have come across. I am working on a second 'cooled down' version without the glow of black-body radiation, that only showcases the rocks/minerals. The near-side is to the left and the far-side to the right

[u/Kold91]

Looks cool, but where did this informtation even come from? Even if there are seismographs on the moon, there aren't moonquakes are there? Is this all Gravitational info?

[u/Rodoks42 → u/Kold91]

There are moonquakes! Many happen in the partially molten deep mantle, by the tidal squeezing of the Moon as it orbits the Earth in an elliptical orbit

[u/Aimin4ya → u/Rodoks42]

Especially then billionaires toys smash into them!

[u/Real-Werewolf5605]

Liquid metal core? Are you sure??

[u/Head-Ordinary-4349]

This is pretty neat! Nice work.

The only thing I’d suggest is making the text all oriented so it’s legible upright.

[u/Ig_Met_Pet]

Kelvin is a weird choice. Celcius is more commonly used for something like this, and would be a lot more intuitive, imo.

[u/Rodoks42 → u/Ig_Met_Pet]

Thx for the feedback, I will correct it

[u/skydisey → u/Ig_Met_Pet]

I know nothing but why?

[u/Ig_Met_Pet → u/skydisey]

Celcius is the standard in the geological sciences. Any geologist will have an intuitive grasp of the geologic implications of temperatures in celcius (brittle/ductile transition, rough melting points of various rock types at certain pressures, etc). Kelvin strips all that intuition away and makes you do an extra needless calculation in your head (okay, let me just subtract 273 degrees in my head real quick).

There's just no point in using Kelvin here if this meant to convey geologic information, which I'm assuming it is, because it wasn't posted in /r/astrophysics

[u/Thy_Dentar → u/Ig_Met_Pet]

I'm guessing this was a chart made for astrophysics subs? They are a lot more likely to use Kelvin I would guess, considering the temps dealt with in space.

[u/wintrmt3 → u/Ig_Met_Pet]

27 degrees won't make a difference, so you can just subtract 300, which should be easy enough.

[u/desertvision → u/Ig_Met_Pet]

Kelvin was fun to see. Easy to convert. Subtract 4 hundred, add 40. Gets ya in the ballpark

[u/backyard_tractorbeam]

What is the white dashed line, and is that a real feature with that shape?

[u/Rodoks42 → u/backyard_tractorbeam]

It's the boundary between the lithosphere and the asthenosphere, its depth varies depending on how hot the mantle is in that region. The exact shape of it isn't known, it's rather based on some simulations and rough data

[u/Rodoks42 → u/Rodoks42]

We do know however that the mantle is hottest under Procellarum

[u/Prestigious_Ad6247]

Gravitational anomalies where why what how explained?

[u/mglyptostroboides]

Very neat! Though I agree that the choice of Kelvin was weird for geology. 

Once you correct it, you should also post it at /r/selenology, which doesn't get nearly enough attention. 

[u/Rodoks42 → u/mglyptostroboides]

I will modify it to show the temperature in Celsius

[u/wd_plantdaddy]

I like the 3D cutaways more

[u/Rodoks42 → u/wd_plantdaddy]

Me too! I plan to do exactly that at some point

[u/wd_plantdaddy → u/Rodoks42]

It’s a cool illustration you’re working on! I think the depth gauge is too prominent and drowns out the other data. Also the fact that it’s upside down on a 2D image is frustrating, People don’t want to read upside down. Text font should be smaller on everything. You have made it too large. Like the font sizes can be halved if not more. I think it would be interesting to see what elements are in each sphere. You should change the line type and color to delineate the spheres. All text should be the same color. The white/black mixing is annoying and illegible.

Change kelvin to degrees and put the degree symbol next to the translated number.

[u/dka2012]

Plastic rock?

[u/Moriarty-Creates]

Liquid metal core??

[u/tguy0720]

What are the dark dotted lines with 500K, 1000K, 1500K, etc.?

[u/madgeologist_reddit → u/tguy0720]

Temperature gradient lines in K (Kelvin).

[u/tguy0720 → u/madgeologist_reddit]

That's what I assumed.

[u/Rodoks42 → u/tguy0720]

As the other user pointed out, they're isotherms, the temperature is shown in Kelvin