This story appears in the November 2016 issue of National Geographic magazine. In winter the temperature at the poles of Mars can reach 200° below zero Fahrenheit. But make no mistake: The red ...
Since NASA announced the mission last year, the so-called stepping stone to Mars has sparked a bristling debate. Science News sponsorship position. Many scientists believe that the mission’s ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results