Be surrounded by experts in space exploration (6)
I believe the answer is:
probes
'be surrounded by experts in space exploration' is the definition.
I can't judge whether this definition defines the answer.
'be surrounded by experts' is the wordplay.
'surrounded by' is an insertion indicator.
'experts' becomes 'pros' (professionals).
'be' placed into 'pros' is 'PROBES'.
Can you help me to learn more?
(Other definitions for probes that I've seen before include "Investigates as dentist does tooth" , "Examines in depth as dentist does tooth" , "Questions or examines thoroughly" , "Conducts penetrating investigation" , "Investigates closely" .)