Frequency - Word Form
  1 acquainted
  1 admiration
  1 altogether
  1 anticipate
  6 astronomer
  1 atmosphere
  1 boundaries
  1 collection
  1 comparable
  1 complexity
  1 concentric
  2 conception
  8 conclusion
  1 conclusive
  2 conditions
  1 constantly
  1 containing
  1 copernicus
  1 definitely
  1 department
  4 determined
  2 difference
  1 difficulty
  1 dissimilar
  1 elementary
  3 estimating
  1 exposition
  1 extinction
  1 extracting
  2 foundation
  2 generation
  1 government
  1 heliometer
  1 heretofore
  1 illustrate
  3 impossible
  1 increasing
  1 incredible
  1 individual
  2 instrument
  1 invalidate
  1 journeying
  1 mechanical
  1 nineteenth
  1 obstructed
  1 parallaxes
  1 perfection
  1 propensity
  2 proportion
  1 propounded
  1 reflecting
  1 scientific
  1 separately
  2 similarity
  2 stupendous
  1 subsequent
  1 successful
  3 successive
  1 sufficient
  1 surrounded
  1 systematic
  5 telescopes
  1 telescopic
  4 throughout
  1 understand
  1 uniformity
  2 university
  1 visibility
  1 well-known