Signs of life on Mars
Signs of life on Mars Mars and Venus are our closest neighbors in the solar system if mars is in a particularly favorable position it's only 55.6 million kilometeres away from us on its elliptical orbit then we see it as bright red with the naked eye standing in the night sky astronomers observed strange processes on mars as early as the 17th century due to the change in color and earth-like surface structures it was soon assumed that life existed on mars. Mars is a rocky planet just like the earth, Venus and mercury only the outer planets that follow mars are gas giants with an equatorial diameter of six thousand eight hundred kilometers. Mars is only about half the size of earth which has a diameter of twelve thousand eight 800 kilometers. In terms of composition mars actually r...