Earth or Mars?
Earth Image Credit & Copyright:
Filipe Alves;
Which image is Earth, and which is Mars?
One of the
above images was taken by the
robot Spirit rover
currently climbing
Husband Hill on Mars.
The other image was taken by a human across the desert south of
Morocco on Earth.
Both images show vast plains covered with
rocks and sand.
Neither shows water or obvious
signs of life.
Each planet has a surface so
complex that any one image
does not do that planet justice.
Understanding either one, it turns out, helps understand the other.
Does the one on the left look like home?
Possibly not, but it is Earth.