As the authors note, the paper investigates two modes of planet colonization — panspermia and terraformation. Panspermia is a theory that the building blocks of life exist throughout the galaxy and ...
This image of Mars was first created from high-resolution images taken by satellites orbiting the red planet. If humans colonize other planets, Mars will likely be the first because of its general ...
Situated on the extinct volcano Arsia Mons, the pit is part of a series found on the flanks of volcanoes in the Tharsis region of Mars. It appears to be a vertical shaft, prompting speculation ...