58010
Our knowledge of galaxy types and their distribution suggests that life as we know it can only exist in about 10 % of all galaxies .
 galaxy
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 galaxy