One example of imagery in The War of the Worlds is the following:
Yet across the gulf of space, minds that are to our minds as ours are to those of the beasts that perish, intellects vast and cool and unsympathetic, regarded this earth with envious eyes, and slowly and surely drew their plans against us.
This example imagines the distance between Earth and Mars as a "gulf," or chasm. The Martians look upon earthlings with "envious eyes," wanting what we have, and coming up with plans to conquer Earth.
The following is another example of imagery that Wells uses to describe Mars:
And looking across...
(The entire section contains 321 words.)