Aten gained its prominence during the reign of Akhenaten.
The heretic king made an effort it seems, to unite all the peoples of Egypt
under one god.
He abolished the traditional cults of Egypt and replaced them
with the Aten.
Unfortunately for Akhenaten, the Egyptians did not wish to be
united in this fashion.
Akhenaten considered the Aten to be the creative force
in the universe and the only god worthy
of his worship.
Inscriptions state that the god had no physical image, but it
was represented as a
solar disk projecting many downward rays that ended
as human hands.
Sometimes holding ankhs, the symbol of eternal life.