Exoplanets sizes: TRAPPIST-1 versus the Solar System
by peridot_faceted, published
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This is a script that generates models of the star and planets in a planetary system; I've used it to generate models for our solar system and for TRAPPIST-1, a system with many earth-like planets around a much smaller star. These models are to the same physical scale, so the (piece of the) Sun is in proportion to the star of TRAPPIST-1, as are all the planets.
The script is included and allows you to generate such models at any scale and of other planetary systems for which you know the sizes.
Yes; see below
The small TRAPPIST-1 printed pretty well with no bottom and zero infill, in spite of the spheres, but the larger Solar System model failed badly even when I tried to skimp on the infills; the tricky part is where the planets stick out of a sloping part of the Sun: here you don't have a bridge and unsupported plastic sticks out over a void. A simple circular reinforcement below each of the larger planets would solve the problem, but I haven't implemented that.
How I Designed This
The script is written in Python, using SolidPython to generate OpenSCAD files, which are then compiled to STL. I've included the generated OpenSCAD files, but they're really not meant for human consumption. The Python lives in an IPython notebook, and it should be pretty clear from the contents how to produce another stellar system (say Kepler-11, with its super-Earths).
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Exoplanets sizes: TRAPPIST-1 versus the Solar System by peridot_faceted is licensed under the Creative Commons - Attribution license.
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