In his high position, could he possibly see Mars? (7)
I believe the answer is:
rameses
'in his high position could he' is the definition.
The definition suggests a singular noun which matches the answer.
'possibly see mars?' is the wordplay.
'possibly' indicates an anagram.
'see'+'mars'='seemars'
'seemars' with letters rearranged gives 'RAMESES'.
Can you help me to learn more?
(Other definitions for rameses that I've seen before include "Egyptian pharaoh" , "Name of several ancient Egyptian rulers - ear mess (anag)" , "Ancient king" , "See Mars (anag) - Pharaoh" , "One of several pharaohs" .)