System Access Reference
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EARTH & FEDERATION SPACEFLIGHT HISTORY
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Spaceflight Chron. · Chapter 4 · 2026-2050: Consolidation of the Solar System

4.2 Stellar Explorations: Alpha Centauri

A profile of Alpha Centauri, the trinary system that is Earth's closest stellar neighbor and home to the humanlike civilization that became a founding member of the Federation, together with a map of the era's interstellar exploration routes and a recounting of how fusion propulsion opened the way to the stars.

Photograph of the habitable Alpha Centauri homeworld, showing oceans, landmasses and cloud cover.
Photograph of the habitable Alpha Centauri homeworld, showing oceans, landmasses and cloud cover.
Orbital distance diagram for the Alpha Centauri system, plotting the two planets against orbital distance in A.U.
Orbital distance diagram for the Alpha Centauri system, plotting the two planets against orbital distance in A.U.
Star map of nearby space showing exploration routes from Sol to Alpha Centauri A, Barnard's Star, Wolf 359, Lalande 21185 and Ross 154, scaled in light-years.
Star map of nearby space showing exploration routes from Sol to Alpha Centauri A, Barnard's Star, Wolf 359, Lalande 21185 and Ross 154, scaled in light-years.

Alpha Centauri

Alpha Centauri is part of a trinary star system with two planets, one inhabited, and is the closest solar system to Earth's home Sol System. A founding member of the United Federation of Planets the Alpha Centaurians have such similar physical characteristics to humans that a common ancestry has been suggested, but never established. Over the years Centaurians and Earthmen have enjoyed a strong mutual respect and admiration for each other.

A Centauri contains two planets: one habitable (H); one uninhabitable.

  • Planet I (H): distance from star 1,395 (x10³ km); diameter 13,065 km; revolution 342 d; average surface temp 2°C.
  • Planet II: distance from star 12,320 (x10³ km); diameter 78,550 km; revolution 14.8 yrs; average surface temp -215°C.

Galactic Bound

The advent of fusion propulsion relegated everything that came before it to the museum. This means of travel, along with great strides in navigation, communications, computer technology, and space metals, allowed for manned interstellar voyages. Beginning with 1-3 year extra-solar tours that acclimated crews to long duration flight, time and distance away from Earth steadily grew until the advanced fusion Columbus Class ships journeyed to Barnard's Star and Alpha Centauri.

It was this latter voyage that cut the fusion age short, for a new, far greater means of travel was at hand.

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