Σ σ Sigma is a letter in the Greek language alphabet of Earth, originating in the early period of Human history. It is used for designations in science, mapping and other fields used in space travel and communications. Many planets, planetoids, stars and star systems use a variation of this term in their name.

ConnectionsEdit

Sigma could also refer to:

• planets and moons
  • Delta Sigma IV
  • Sigma 1212
  • Sigma Cameron IV
  • Sigma Iotia II
  • Sigma Omicron VII
• space stations and outposts
  • Outpost Sigma 3
  • Starbase Sigma 1
  • Sigma-class
• stars and star systems
  • Delta Sigma
  • Sigma 1014 Orionis
  • Sigma 1212
  • Sigma Cameron
  • Sigma Ceti
  • Sigma Draconis
  • Sigma Erandi
  • Sigma Iotia
  • Sigma Omicron
  • Sigma Regonis
  • Sigma Serpentis
• wars and military engagemants
  • Battle of Sigma Draconis