Current Affairs
Daily Bits

Light pollution due to Satellite

  • Posted By
  • Categories
    Science & Technology
  • Published
    1st Apr, 2021


A new study shows that the objects which are sent to space to orbit the Earth can increase the overall brightness of the night sky by 10 % above the natural levels.

About the Report’s finding

  • Light Pollution: Large fleets of communication satellites add to the light pollution as well as debris.
  • Cause: The space debris and satellites adds on the light dispersion from artificial moving space objects.
  • It has a large geographic reach.

Light Dispersion

  • When the white light is passed through a glass prism it splits into a spectrum of colors (violet, indigo, blue, green, yellow, orange, and red).
  • The process of white light splitting into its constituent colors is known as dispersion.
  • Obstruction to studies: The observatories are set far from city lights to get a good look at the dark sky.
  • The growing number of artificial space objects blocks the sky and disturbs the observations.

Light Pollution

  • Light pollution is the presence of anthropogenic and artificial light during the night.
    • The light alters the natural conditions of the environment.
  • Cause: It gets increased by the excessive, misdirected, and obtrusive use of light.
    • One of the major causes of light pollution is urbanization.
  • Impacts:It is associated with compromising health, disruption in ecosystem and in spoiling environments.

Components of light pollution

  • Glare: excessive brightness which causes visual discomfort
  • Skyglow: It causes the brightening of the night sky over inhabited areas
  • Light trespass: The light falls where it is not intended or needed
  • Clutter: It comprises of accumulation of bright, confusing, and excessive groupings of light sources