Αα Alpha is a letter in the Greek alphabet of Earth, originating in the early period of Human history.
It was used in the following contexts:
- Cardassian terminology
- Alpha Red priority mission, a Cardassian military directive
- Cartography
- Alpha Quadrant, a quarter of the Milky Way Galaxy
- Kavis Alpha sector
- Chemistry
- Alpha particle
- hydrogen-alpha, an emission line created by hydrogen atoms
- Colonies
- Alpha Centauri colony
- Colony Alpha V
- Food and beverages
- Holographic terminology
- Diagnostic Program Alpha-11, a holographic agent
- Diagnostic routine alpha-three-six, a diagnostic performed on the Doctor's mobile emitter
- Emergency procedure alpha two, a main computer bypassing procedure
- Various holodeck programs, including:
- Diplomacy scenario 12-alpha
- Insurrection Alpha
- K'mtar Alpha-One
- Program Paris Alpha-1
- Legal terminology
- Medical terminology
- Alpha-wave, a brainwave pattern
- Theta 12 alpha, a drug devised by The Doctor that combats Vulcan pon farr.
- Planets
- Alfa 177
- Alpha III
- Alpha V
- Alpha Carinae II
- Alpha Carinae III
- Alpha Carinae V
- Alpha Centauri VII
- Alpha Cygnus IX
- Alpha Eridani II
- Alpha Laputa IV
- Alpha Majoris I
- Alpha Omicron VII
- Alpha Onias III
- Ceti Alpha V
- Ceti Alpha VI
- Kavis Alpha IV
- Planet 1865-Alpha
- Tau Alpha C
- Zeta Alpha II
- Planetoids
- Alpha 441
- Alpha moon of Peliar Zel
- Memory Alpha
- School
- Ships
- Alpha Nine, an attack raider used by the Maquis
- Alpha Seven, an attack raider used by the Maquis
- NX-Alpha, test vessel of the NX Program
- Space station
- Lya Station Alpha, a Starfleet space station
- Starfleet terminology
- Alpha-47 authorization, a Starfleet security protocol
- Alpha search pattern, a Starfleet procedure
- Alpha shift, the first shift or watch on a Starfleet starship
- Code 1-Alpha-Zero, a ship in distress code
- Position Alpha, ship location reference used during the Battle of Wolf 359
- Deck 17, section 21-Alpha, the location of the Enterprise-D arboretum
- Pattern Riker alpha, a Starfleet standard maneuver, developed by William T. Riker
- Starfleet command authorization codes including:
- Omicron-omicron-alpha-yellow-daystar-2-7 (2365)
- Sisko-Alpha-1-Alpha (2371)
- Override Command 1-EMH-Alpha; End Program (2371), The Doctor's deactivation code
- Picard-4-7-Alpha-Tango (2373)
- Picard, authorization Alpha-Alpha-3-0-5 (2379)
- Stars
- Alpha Aquila
- Alpha Ataru
- Alpha Aurigae
- Alpha Canis Majoris
- Alpha Carinae
- Alpha Centauri C (Alpha Proxima)
- Alpha Cygni
- Alpha Eridani
- Alpha Leonis
- Alpha Lyrae
- Alpha Majoris
- Alpha Shiro
- Alpha Tauri
- Ceti Alpha
- Dikon Alpha, a class nine pulsar
- Star systems
- Alpha system
- Alpha Bootis system
- Alpha Carinae system
- Alpha Centauri system
- Alpha Cygnus system
- Alpha Eridani system
- Alpha Leonis system
- Alpha Majoris system
- Alpha Omicron system
- Alpha Onias system
- Alpha Proxima system
- Alpha Scorpii system
- Ceti Alpha system
- M24 Alpha system
- Nequencia Alpha system
- Zeta Alpha System
- Titles
- Alpha, a Jem'Hadar soldier bred in the Alpha Quadrant
- Alpha Hirogen, leader of a Hirogen pack
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