Hypothetical materials used to construct (this) shell world
As there are multiple definitions for shell world, this needs some clarification. In this case, a shell world refers to a body with the surface being domed over and possibly propped up by the atmosphere, not a Matroska-style shell world or a shell using a gas giant as a ballon for support creating a planet with hundreds of time the surface area of the earth. This one is much tamer. The question here is relatively straightforward, in that what would such a shell be constructed of. The planet, or planetoid, in this case, is roughly the mass of the moon, with a surface gravity of roughly 0.2 g, and smack dab in the middle of the habitable zone of the star it orbits. In the habitable zone of the star, it orbits. The shell, in this case, should be
- Transparent to visible light and infrared radiation, and potentially lower wavelengths
- Should be resistant to charged particles, should be resistant to UV radiation, completely non-transparent, to anything above UV.
- Energy for the initial production isn't an issue
- Verry little energy for matitence
- The surface should extend to at least 2500 feet to allow for some form of natural weather cycle(Or a different appropriate height for a natural weather cycle.). By this, it's mean cloud formation(and so rain)
- Should be resistant to space debris- eg it shouldn't go "pop" when a stray sharp rock hits it. hence the term shell.
- Resources aren't an issue
- Cost isn't an issue
- Can be propped up by massive internal pressure, massive pillars, both, or something else. Take your pick.
- Material doesn't have to be within the realm we're currently capable of producing. An example of the SORT OF material might be graphene, as in it can and does exist, can exist, we just can't mass produce it yet. What material or materials should be used to construct THIS shell