15830
The service life of space-based collectors in the face of challenges from long-term exposure to the space environment , including degradation from radiation and micrometeoroid damage , could also become a concern for SBSP .
 micrometeoroid
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:
 micrometeoroid