Intense, paces about, a long way away (4,5)
I believe the answer is:
deep space
'a long way away' is the definition.
I can't tell whether this definition defines the answer.
'intense paces about' is the wordplay.
'intense' becomes 'deep' (associated in meaning).
'about' indicates an anagram.
'paces' with letters rearranged gives 'space'.
'deep'+'space'='DEEP SPACE'
Can you help me to learn more?
(Other definitions for deep space that I've seen before include "Region beyond our atmosphere" , "even devoid of 12 [THIN AIR]" , "void" .)