Modern space agencies are actively developing Mars Future Plans (PDF) for the next 20 years, focusing on sustainable human exploration.

Scientific papers often explore the "welcoming" nature of the Martian surface, debating the ethical and physiological challenges of establishing a permanent base. Summary of Book Details Mars! Earthlings Welcome (Our Universe, 5) - Amazon.com

The keyword primarily refers to the popular children's nonfiction book Mars! Earthlings Welcome by Stacy McAnulty, illustrated by Stevie Lewis. Part of the Our Universe series, this "autobiographical" account of the Red Planet is frequently sought in PDF format by educators and parents for STEM learning. 1. The Core Resource: Mars! Earthlings Welcome