lunar base from NASA

    Caption: "A moonbase concept drawing from NASA." (Slightly edited.)

    The ideas of moonbases and lunar colonization have been with us for a long time, but might realized sometime in the 21st century---maybe "Moonbase 2100"---but they will probably be robotic since low gravity is NOT a healthy environment for humans (see Wikipedia: Weightlessness: Human health effects)---and who'd want to live on the Moon for more than a lunar month = 29.530588861 days (J2000).

    Features:

    1. The large field with "furrows" is probably an array of solar panels. But on the other hand, someone seems to be turning sod.

    2. The long linear structure is a mass driver is an electromagnetic launch device. A few experimental mass drivers have existed since 1976.

    Credit/Permission: NASA, 1977 (uploaded to Wikipedia by Square87, 2006) / Public domain.
    Image link: Wikipedia: File:Lunar base concept drawing s78 23252.jpg.
    Local file: local link: moonbase.html.
    File: Moon file: moonbase.html.