horizon

     

The horizon (Ancient Greek ὁ ὁρίζων, /ho horízôn/, from ὁρίζειν, "to limit") is the apparent line that separates earth from sky.

Trivia about horizon

  • (Kelly of the Clue Crew sits in a flight simulator)The simulator's primary flight display indicates the aircraft's trajectory; place the bird here on this line that defines the boundary between earth and sky and you'll get level flight
  • It's that line off in the distance where the sky meets the land or the sea
  • Ideally, this, the apparent boundary between the sky & the Earth, is at 90 degrees from the zenith
  • The line that forms the apparent boundary between Earth & sky