### Clue: Clouds from high blue area gathered in north-east (7)
### Answer: NEBULAE 
 ### Explanation: Definition: Clouds
 [**Anagram of**(high) BLUE + A(abbrev. for $$a$$rea)] **contained in**(gathered in) NE(abbrev. for north-east).
Answer:  Diffuse clouds of gases and particles in outer space.