Behold the incredible places where we’ll build cities in space
masses always forget about radiation when they suppose place colony . Out there , on other world , humans wo n’t be screen from cosmic radiation the path we are by Earth ’s magnetic field . That ’s why cities on other worlds are probable to be undercover . Here are few places we might build them . Above you may see a HiRISE picture of an unusual Martian feature — a volcanic crater with a hole in the bottom on the slope of the vent Pavonis Mons ....