Mars! Earthlings Welcome: A Guide to the Red Planet The phrase is most famously the title of a popular non-fiction picture book by Stacy McAnulty. However, for space enthusiasts and educators, it has become a broader theme representing the transition of Mars from a distant, cold light in the sky to a potential future home.

As the planet warms, subsurface ice will melt, forming rivers, lakes, and eventually oceans.

Without a thick atmosphere or a global magnetic field, Mars is bombarded by solar cosmic rays and galactic cosmic radiation, requiring heavy shielding for all human habitats. 2. Habitat Architecture: Living Underground and in Domes

Who is allowed to issue a "Mars Earthlings Welcome" document? This section addresses the legal vacuum.