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=== The cosmology of ''Star Wars'' ===
 
=== The cosmology of ''Star Wars'' ===
  
As far as we can tell, the stars of ''Star Wars'' (that is, the celestial bodies, not the actors) seem to be much the same as ours.  The "galaxy far, far away" has had various depictions over the years, but all sources agree that it is a spiral galaxy approximately the same size as our Milky Way galaxy, albeit with a less prominent bar than the Milky Way has.  We don't ever hear what name, if any, the Star Wars characters have for the galaxy, or why they call it a "galaxy" when the word comes from a Latin phrase, "Via Galactica" or "Milky Way" -- a question that Randall has brought up in [[890: Etymology]].
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As far as we can tell, the stars of ''Star Wars'' (that is, the celestial bodies, not the actors) seem to be much the same as ours.  The "galaxy far, far away" has had various depictions over the years, but all sources agree that it is a spiral galaxy approximately the same size as our Milky Way galaxy, albeit with a less prominent bar than the Milky Way has.  We don't ever hear what name, if any, the Star Wars characters have for the galaxy, or why they call it a "galaxy" when the word comes from a Latin phrase, "Via Galactica" or "Milky Way" -- a question that Randall has brought up in [[890: Etymology]]. Light is known to have a speed, although we are not told what that speed is, or if it is constant for all observers in all reference frames, and ships can travel faster than that speed by "jumping" into hyperspace, crossing the galaxy in a matter of hours rather than tens of thousands of years.
 
 
Light is known to have a speed, although we are not told what that speed is, or if it is constant for all observers in all reference frames.  That speed is an upper bound on the speed that objects can travel in real-space, as in our universe, but in ''Star Wars'', ships can travel faster than that speed by "jumping" into a parallel dimension called "hyperspace".  This allows them to cross the galaxy in a matter of hours rather than tens of thousands of years.  According to our understanding of relativity, transmitting information faster than light is equivalent in some reference frames to transmitting information backwards in time (cf. the {{w|tachyonic antitelephone}}), but such temporal paradoxes are not known to occur in the ''Star Wars'' universe.  The only known examples of information transmitted backwards in time come from the Force, such as limited precognition of incoming dangers or vague, prophetic visions of possible futures.  Speaking of which, "the Force" is said to be "an energy field, created by all living things" which "binds the galaxy together".  It's not clear if the Force is a fifth {{w|fundamental force}} or "merely" a manipulation of the fundamental forces by focused will, but powerful Force-users have been known to raise and move heavy objects, conjure lightning, and manipulate minds.
 
 
 
It is not known if the universe of ''Star Wars'' is expanding, contracting, or steady-state, although prior to Lucasfilm's acquisition by Disney, the officially-published non-film ''Star Wars'' media were collectively known as the "Star Wars Expanded Universe".
 
  
 
In addition to the usual stellar evolution process, stars in ''Star Wars'' are subject to premature destruction or spontaneous creation by various superweapons, such as the Sun Crusher and Star Forge.
 
In addition to the usual stellar evolution process, stars in ''Star Wars'' are subject to premature destruction or spontaneous creation by various superweapons, such as the Sun Crusher and Star Forge.

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