That means a space or Mars colony would need artificial gravity to keep residents healthy. Mars has some built-in gravity already — about 38% of what we experience on Earth. But a space station ...
Yet, with US support for the International Space Station proposed to end in ... Musk has said he believes a Mars colony would need about a million people to make it self-sustaining - one of ...
But they give us a glimpse of what a future Mars colony might enjoy - or endure ... in the 1970s by Nasa's Viking landers, the US space agency only discovered actual snow in 2003Credit: NASA ...