MarsX1: A Novella We will colonize Mars, just not in the way we think. The decision will be made for us, and out of desperation, we will meet the challenge. But this staggering undertaking is only the beginning. MarsX1 is the first in a series of novellas in the Remembered Earth Universe and may be read as a standalone if desired. See the author's website for more information. Hard Science Fiction - Old School.