adjective satellite (s)

• having low density(adj.all)

  Example:
  Lightheaded from the rarefied mountain air.
  

  Synonym:
  rare, rarified
  

  source: wordnet30
• of high moral or intellectual value; elevated in nature or style(adj.all)

  Synonym:
  elevated, exalted, grand, high-flown, high-minded, idealistic, lofty, noble-minded, rarified, sublime
  

  source: wordnet30