Recording equipment orbiting globe for space intruder (6)
I believe the answer is:
meteor
'space intruder' is the definition.
(object intruding into Earth's atmosphere)
'recording equipment orbiting globe' is the wordplay.
'recording equipment' becomes 'meter' (device for recording or measuring).
'orbiting' means one lot of letters goes inside another.
'globe' becomes 'o' (O resembles a globe).
'meter' going around 'o' is 'METEOR'.
'for' is the link.
(Other definitions for meteor that I've seen before include "Small extraterrestrial body" , "sky phenomenon" , "Glowing body entering atmosphere" , "extraterrestrial debris" , "Small piece of matter in the solar system" .)