1491
The fine-structure constant appears to have been larger by one part in 100,000 in the direction of the southern hemisphere constellation Ara , 10 " billion years ago .
 astronomical object: Ara
Please list all entity words in the text that fit the category.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} 
Answer:
 astronomical object: Ara