Which units are commonly used to express distances beyond the influence of the Sun, where the AU becomes impractical?
Answer
Light-Year ($ exttt{ly}$) or Parsec ($ exttt{pc}$).
When venturing beyond the Sun's influence towards other stars or galaxies, distances are more commonly expressed using the Light-Year ($ exttt{ly}$) or the Parsec ($ exttt{pc}$).
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