Red Moon scaled one in sixty million

This is my interpretation of the Red Moon where it takes place Manifold: Origin, a hard science fiction novel full of gore, by Stephen Baxter. It has nothing to do with the real Earth's Moon1; in the book, it is a planetoid, a bit bigger than Mars, that suddenly appeared in the same place and orbit of the real counterpart, replacing it, and causing disasters on Earth after its huge tidal force. This post will be full of spoilers, so if you are planning to read the book, read it first.
I made this model using Ubuntu available tools, not because of having any advantage, but because I was forced to work on Linux at that time, so I challenged to myself to learn to use free-soft tools with this model. I used GIMP instead of Paint.net for drawing the topography; Octave instead of MATLAB for plotting the 3D model; MeshLab for simplifying the meshes, instead of Microsoft 3D Builder; Freecad2 instead of SolidWorks for the tunnel and the World Engine; and Blender for subtracting the tunnel and the chamber, and painting the outer surface, instead of 3D Builder or Paint 3D.
The file's names explained: name_1_x_10_y.stl is 1 : x * 10y. So _1_6_10_7 is 1:600000000 or one in 60 million.

Characteristics taken from the book

I took as much information as I could from the book, though I had to leave out some concepts that contradicts other, but the small details I had to make them up, as they are not as much detailed. I will list some of the features taken into account:
  • Its visible disc has five times as surface as Luna.3
  • It has one big continent mostly rounded as if the moon's center of mass was displaced from the geometric center.
  • There is a huge volcano at the center of the continent, nicknamed "Bullseye", surrounded by glaciers, and then, by vegetation. I made it twice as big as the real Olympus Mons.
  • From the Bullseye it is born a Nile like river that ends on the east coast.
  • The inland of the supercontinent is a rusted red, Mars like, dessert, with giant eroded craters. The vegetation is restricted to the coastlines. Two mountain beltways run along the east and west coasts.
  • There is a spherical chamber in the "very heart" of the moon. I made it displaced from the geometric center so that it can explain the displacement of the center of mass.
  • The chamber has something "blocky, obviously artificial," lurking within, that is the "World Engine". It is implied that this is huge but it does not occupy the whole chamber, but since the biggest scale I have made is something 13 cm in diameter, the space for something in the chamber is small (4 cm), so I decided to do like it is shown in one of the images. There is not a well detailed description of the engine in the book, so I made up a gyroscope-like stylised structure.
  • It is said that the entrance of the tunnel that leads to the chamber is placed in a small crater in the East coast, and that this crater is "diametrically opposite" to the Bullseye; however, this is not possible taking into account all the previous constrains, so I intentionally ignore this one.

Inhabitants of the Red Moon

From this point on, everything is a spoiler, so you are already warned. Many of the races listed behind are based on extinct pre-human species; they are not time-travelled hominines, but morphologically similar descendant of them, so they cannot be treated as the real species they are meant to be.
  • Runner folk. Homo erectus4. They are tall and thin, dark skinned, primitive face traits but recognisable as humans. They lore in groups of many, nomads, and they develop specific roles for each individual, making tools, starting fire, treating injuries, etc. When they have to do a group task, they do it without any synchronisation, chaotically. They speak a few weakly connected English words.
  • Elf folk. Australopithecus sp.4. Short, dark furred like a chimp but standing straight when walking. Speculative pointing ears and an oddly human face. They are an aggressive folk, gregarious, tree dwelling, and they lack any fluid communication.
  • Nutcrackers. Another australopithecine5 species. Herbivorous, with a big belly and a tall sagital crest, similar to that of gorillas. The author was likely referring to the genus Paranthropus, which is not widely agreed to be a separated genus, and are dubbed as "robust australopithecines".
  • Hams. Homo neanderthalensis. They are stocky, heavy built, with pronounced eyebrows and short chin. They speak a rough English, lacking verbal times, like the typical cartoonish cavemen speaking. They are named after biblical characters, and they said to came from a place they call the "Gray Earth"
  • English men. Homo sapiens. They are a few, old, male, Victorian Era English astronauts. They live in small towns and use other folks as servants.
  • Zealots. Homo sapiens. An ultra religious, Medieval Age civilization (or just a town?). They use Hams as slaves, Runners as load animals, and they hunt australopithecines5 for food. It's not clear if all of them, or just their leader, have tail.
  • Daemons. They are 3 m tall, knuckle walkers, fast moving, sapien australopithecines5, that evolved in a high O2 atmosphere. They are far more advanced than humans, and they developed magic-like technology called Mapping, that allows them to summon things and teleportation. They are tagged as Homo superior, they are not meant to represent any real animal, but it's possible that Baxter was winking at the problematic genus Meganthropus, though bigger.
  • Other species include: cats (presumably big felids), hyenas, bats, hunting ground birds (possibly phorusrhacids), deers, mouse deers, duikers, crocs, fish, glass shrimps, and an speculative aquatic hominid. The plants mentioned in the book are conifers, grass, brushes, pitcher plants, cloudberry plants and bananas.

Notes

  1. Probably inspired by the Blood Moon Prophecy
  2. A pain in the ... back.
  3. The circular visible disk corresponding to a distant point of view: S = π r2
  4. Homo erectus and some species of Australopithecus are most likelly to be chronospecies, that is, species that did not stand firmly on a separate clade, but some population of it, evolved into a new one; in this case, in more modern humans. So that, even late surviving individuals should not be considered the same species.
  5. "Australopithecines" refers to the sub-tribe Australopithecina, which cladistically includes humans; but in the book, the term is used in a paraphyletic way, including Australopithecus grade hominids, but not the genus Homo.

References



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Other astronomical objects

Object

Scale [1:x]

K = 103 (thousand)
M = 106 (million)
G = 109 (billion)

Image

Inner Solar System

Mercury 20M, 60M, 120M image
Venus 60M, 120M, 250M image
Earth 60M, 120M, 250M image
Luna 10M, 20M, 60M image
Mars 20M, 60M, 120M image
Phobos and Deimos 200K, 500K image

Man-made

Salyut 7 40, 48, 80, 160 image

Near Earth Asteroids

Moshup and Squannit 8K, 20K, 40K image
Ra-Shalom 20K, 40K image
YORP 1K, 3K image
Castalia 8K, 20K, 40K image
Bacchus 8K, 20K image
Bennu 3K, 8K image
Ryugu 3K, 8K, 20K image
Geographos 40K, 80K image
Phaethon 40K, 80K image
Itokawa 3K, 8K image
Eros 80K, 200K, 500K image
Nereus 3K, 8K image
Didymos and Dimorphos 8K, 20K image
Mithra 20K, 40K image
Golevka 8K image
Toutatis 40K, 80K image

Main Asteroid Belt

Gaspra 200K image
Annefrank 40K, 80K image
Braille 20K, 40K image
Vesta 2M, 4M, 10M image
Šteins 40K, 80K, 200K image
Iris 2M, 4M image
Hebe 1M, 2M, 4M image
Lutetia 500K, 1M, 2M image
Julia 1M, 2M, 4M image
Mathilde 500K, 1M image
Juno 2M, 4M image
Ceres 4M, 10M image
Pallas 4M, 10M image
Kleopatra 2M, 4M image
Ida 500K, 1M image
Psyche 2M, 4M image
Interamnia 2M, 4M image
Elektra 1M, 2M, 4M image
Hygiea 2M, 4M, 10M image
Antiope 1M, 2M image

Jovian System

Jupiter 500M, 1G image
Amalthea 2M, 4M image
Thebe 1M, 2M image
Io 20M, 60M image
Europa 20M, 60M image
Ganymede 60M, 120M image
Callisto 60M, 120M image

Saturn System

Saturn 500M, 1G image
Pan, Daphnis and Atlas 80K, 200K, 500K, 1M image
Prometheus and Pandora 1M, 2M image
Janus and Epimetheus 2M, 4M image
Mimas 2M, 4M, 10M image
Methone, Anthe and Pallene 40K, 80K image
Enceladus 4M, 10M image
Tethys 4M, 10M, 20M image
Telesto and Calypso 200K, 500K image
Dione 4M, 10M, 20M image
Helene 500K, 1M image
Rhea 10M, 20M image
Titan 60M, 120M image
Hyperion 2M, 4M image
Iapetus 10M, 20M image
Phoebe 1M, 2M, 4M image

Uranian System

Uranus 250M, 500M, 1G image
Puck 1M, 2M, 4M image
Miranda 4M, 10M image
Ariel 10M, 20M image
Umbriel 10M, 20M image
Titania 10M, 20M image
Oberon 10M, 20M image

Neptunian System

Neptune 250M, 500M, 1G image
Larissa 2M, 4M image
Proteus 2M, 4M, 10M image
Triton 20M image

Comets

Tempel 1 40K, 80K, 200K image
Wild 2 40K, 80K image
Churyumov-Gerasimenko 20K, 40K, 80K image
Hartley 2 20K, 40K, 80K image
Borrelly 40K, 80K, 200K image
Halley 80K, 200K image

Centaurs and TNOs

Hidalgo 500K, 1M image
Chariklo 2M, 4M image
Pluto and Charon 10M, 20M image
Styx, Nix, Kerberos and Hydra 500K, 1M image
Haumea, Namaka and Hiʻiaka 10M, 20M image
Arrokoth 200K, 500K, 1M image
Largest TNOs and their moons 10M, 20M image

Extrasolar

Exoplanets 120M, 250M, 500M image
Nearest white dwarfs 120M, 250M image
HD 189733 b 1G image
Pulsars 200K, 500K image
Cygnus X-1 accretion disk 10M, 20M image
M87* photon ring 1.5*1014 image

Sky maps

Heliosphere 7.5*1013, 1.5*1014 image
Constellations - image
CMBR 2*1028 image

Ancient

Earth (540 Mya to 20 Mya) 60M, 120M, 250M image
Luna (4 Gya) 20M, 60M image

Speculative

Planet Nine 250M, 500M image
Cube planet 60M, 120M, 250M image

Science Fiction

Ghroth 4M, 10M image
Arda 60M, 120M image
Life Foundation rocket 160, 200, 350, 500 image
B612 10, 20, 32, 40 image
Mesklin 500M, 1G image
Arrakis 60M, 120M image
Borg cube 8K, 20K, 40K image
Pern 60M, 120M image
Europa Monolith 200K, 500K image
Leonora Christine 500, 600, 1K, 3K image
Rama 80K, 200K, 500K image
Death Star 500K, 1M, 2M image
Starkiller Base 2M, 4M, 10M image
Z-95 40, 80, 160, 200 image
Eternia 60M, 120M image
Rocheworld 20M, 60M image
Visitors mothership 20K, 40K image
Wheel of Time Earth 60M, 120M, 250M image
Nirn, Secunda and Masser 20M, 60M, 120M image
ID mothership 2M, 4M, 10M image
ID troop transporter 200, 350, 500, 600, 1K image
Heptapod spaceship 1K, 3K, 8K image
Gaijin flowership 3K image
Red Moon 60M, 120M image
Halo Array 4M, 10M, 20M, 60M image
Gem Homeworld 120M, 250M, 500M image
Citadel of Ricks 200K image
The Skeld 40, 80, 160, 200, 350, 500, 1K image
Jean Jacket 350, 500, 600, 1K image

Misc

Mars (1962 reconstruction) 60M, 120M image
Flat Earth 250M image
Expanding Earth 60M, 120M image
Spaceship of Ezekiel 80, 160 image