One not very big comet hits Earth and humanity is extinct. Man needs to spread into the solar system and beyond to ensure survival. Moon and Mars are two obvious first steps in that direction. Terraforming of Mars will take centuries, but the sooner we start the sooner it becomes the first backup human civilization.
Slashdot Mirror
One not very big comet hits Earth and humanity is extinct. Man needs to spread into the solar system and beyond to ensure survival. Moon and Mars are two obvious first steps in that direction. Terraforming of Mars will take centuries, but the sooner we start the sooner it becomes the first backup human civilization.