topics
overall
robots
human
posts
events
news
nets
address
Constellation
id: constellation.virgo
diameter: 33 MPC
Cluster
id: cluster.local
diameter: 3.1 MPC
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