Company gathered together to find astronomical object (5)
I believe the answer is:
comet
'astronomical object' is the definition.
'comet' can be an answer for 'object' (comet is a kind of object). I'm not certain of the 'astronomical' bit.
'company gathered together' is the wordplay.
'company' becomes 'co' (abbreviation).
'gathered together' becomes 'met' (I've seen this before).
'co'+'met'='COMET'
'to find' acts as a link.
Can you help me to learn more?
(Other definitions for comet that I've seen before include "Small extraterrestrial body" , "potential space invader" , "Plane" , "One is named after Edmond Halley" , "5 [SKYLIGHT], perhaps?" .)