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Resurse astronomice
NASA - American Space Agency
National Geografic - Sollar System
Maps of The Solar Systems
StarGazer on line - The Night Sky on Paper
Solar System Simulator
The Constellations and their Stars
The Extrasolar Planets Encyclopaedia


 
  W – Stele Wolf Rayet linii He He+
  O – Stele albastre foarte calde linii He++ Si++++
  B – Stele albastre cu heliu linii He Si+++
  A – Stele albe cu hidrogen linii H metale
  F – Stele albe galbene metalice linii H Ca+ metale
  G – Stele galbene tip solar linii H Ca+ metale
  K – Stele galbene portocalii linii Ca+ metale
  M – Stele rosii cu oxid de titan benzi de absorbtie TiO
  R – Stele galbene inchis carbonate benzi moleculare de CN CH CO
  N – Stele rosii rubinii carbonate qnzi moleculare de carbon
  S – Stele gigante benzi moleculare de oxid de Zr si Tc
 


Documentar milky way black hole
Site-ul oficial Star Trek
Paramount Pictures

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