60051
At the end of the stellar age , galaxies will be composed of compact objects : brown dwarfs , white dwarfs that are cooling or cold ( " black dwarfs " ) , neutron stars , and black holes .
 astronomical object: compact objects
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: compact objects 
Answer:
 astronomical object: compact objects