### Clue: Company's last word on closure for loft space (9)
### Answer: FIRMAMENT 
 ### Explanation: Definition: space
  FIRM(company) AMEN(the last word said in prayer) **placed before**(on, in a down clue) T(last letter of,closure for "loft")
Answer:  The sky or heavens, which we now know is just space – lots of it