Physical Characteristics
Mars has only a quarter the surface area of the Earth and only one-tenth the mass, though its surface area is approximately equal to that of the Earth's dry land because Mars no longer possesses oceans. The solar day on Mars is very close to Earth's day: 24 hours, 39 minutes, and 35.244 seconds.
Read more about this topic: Mars In The Fiction Of Leigh Brackett
Famous quotes containing the word physical:
“A more problematic example is the parallel between the increasingly abstract and insubstantial picture of the physical universe which modern physics has given us and the popularity of abstract and non-representational forms of art and poetry. In each case the representation of reality is increasingly removed from the picture which is immediately presented to us by our senses.”
—Harvey Brooks (b. 1915)