*Protection from [[solar radiation]] by mountains versus [[sunlight]] for [[greenhouse]] lighting.
*Protection from [[solar radiation]] by mountains versus [[sunlight]] for [[greenhouse]] lighting.
==Why settlements on Mars?==
You mean I don't have to pay for expert acdvie like this anymore?!
Compared with other celestial bodies, for instance Earth's [[Moon]], the planet Mars provides a number of advantages. The Martian surface and [[atmosphere]] consists of all necessary substances that are needed to build and maintain a human settlement, including [[water]], [[carbon]] and [[minerals]]. The [[environmental conditions]] are quite cold, but not too cold. The distance from the sun allows [[solar panel]]s to operate, which is essential for [[energy]] production.
Particularly convenient is the existence of a visible sky, which can make people feel home, and the day-night rhythm is nearly earth like. Though the [[gravity]] is lower than on Earth, it still allows people easily to walk and do [[Physical exercise |exercise]]. The spacial orientation is supported. The comfort of sinking into a pillow for sleeping might be appreciated. And yet, there are several [[What settlers would miss|things, settlers would miss]].
===Advantage over Earth's moon===
* Higher gravity (with consequences for health)
* abundance of water and carbon
===Advantage over Venus===
* A cold environment is much easier to handle than a hot. Especially on the planetary surface, a settlement on Venus is not possible.
* Compared with a floating settlement in the Venusian clouds, the Martian surface provides easy access to substances for construction material.
