66282
The energy from the nearby stars is insufficient to ionize the gas of the nebula to create an emission nebula , but is enough to give sufficient scattering to make the dust visible .
 astronomical object: emission nebula
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: emission nebula 
Answer:
 astronomical object: emission nebula