everytl;dr

Capturing the Solar Analemma Over Scotland's Callanish Stones

NASA

3 views

  • An 'analemma' is a composite image showing the Sun's position in the sky at the same time each day over the course of a year.
  • The featured image documents this solar pattern above the Callanish Stones in the Outer Hebrides, Scotland.

Science of the Analemma

  • The characteristic figure-8 shape results from the tilt of the Earth's axis and the ellipticity of its orbit.
  • The Sun reaches the top or bottom of the loop during the solstices; the image features the Sun near the bottom, reflecting a near-December solstice capture.
  • Equinoxes correspond to the middle points of the loop, not the intersection point.

Historical Context

  • The Callanish Stones are an ancient circle constructed around 2700 BC during the Bronze Age.
  • Historians have not determined if the monument's layout holds specific astronomical significance.

This summary was generated by AI from the original article and may omit nuance or later updates. How everytldr works

 
  •  
       
     
  •  
       
     
  •  
       
     
  •  
       
     
  •  
       
     
  •  
       
     
  •  
       
     
  •  
       
     
  •  
       
     
  •