topics
overall
robots
human
posts
events
news
nets
address
Galaxy
id: galaxy.milkyway
diameter: 31-55 KPC
stars: 100-400 B
planets: 100 B
planets green: 1000
Star
id: star.sun
diameter: 1391400 km
Planet
id: planet.earth
diameter: 12742 km
pop: 7.1 B
area: 510.1 M km2
tempL: -89 C
tempH: 57 C