Cool is the opposite of Warmth. Warmth is related to Home. Home is a synonym of Interior. 
Astronomer is a type of Scientist. Scientist is derived from Science. Science is related to Weird. Weird is related to Dream. 
Cool <--Antonym--> Warmth <--RelatedTo--> Home <--Synonym--> Interior 
Astronomer --IsA--> Scientist --DerivedFrom--> Science <--RelatedTo--> Weird <--RelatedTo--> Dream 