People are pretty adaptable. We’ve learned to live in some harsh conditions: deserts, jungles, mountaintops — and even the South Pole. Someday, though, people may live in an environment that’s even tougher: the surface of Mars. And it’s certain to take some getting used to.
In some ways, Mars is much like Earth. Its day is only a bit longer than Earth’s, so the cycle of day and night is quite similar. It’s tilted on its axis at about the same angle as Earth, too, so the pattern of the seasons is similar to our own as well. And Mars has a thin atmosphere, which adds clouds and a bit of color to the sky.