Testo The Overview: Perspective

Size beyond one megametre
10 to the power of 6
Ganymede
Callisto
Wolf 359
Size beyond one gigametre
10 to the power of 9
Sirius Altair
Vega
Polaris
Size beyond one terametre
10 to the power of 12
Antares
Pistol Star
Betelgeuse


Size beyond one petametre
10 to the power of 15
Stringray Nebula
Ring Nebula
Helix Nebula The Spire
Hourglass Nebula

Size beyond one exametre
10 to the power of 18
Omega Centurai
Messier 54
Tarantula Nebula
Size beyond one zettametre
10 to the power of 21
Milky Way
Andromeda Galaxy
Fornax Cluster
Size beyond one yottametre
10 to the power of 24
Virgo Super Cluster
Eridanus Supervoid
Super Cluster Complex