Light Pollution – Why we can’t see stars

Light pollution occurs when there is too much artificial light from buildings, streetlights, and other sources, which makes the night sky too bright.

What is Light Pollution?

Light Pollution refers to the excessive or misdirected artificial light produced by human activities that brightens the night sky and interferes with our ability to see stars and other celestial objects. It is primarily caused by outdoor lighting fixtures, such as streetlights, buildings, and illuminated signs, that emit light upward and outward instead of directing it downward to illuminate the intended area.

Now, lets understand it in Simple terms, it occurs when there is too much artificial light from buildings, streetlights, and other sources, which makes the night sky too bright. This excess light makes it difficult to see stars and other objects in the night sky.

What are the reasons for Light Pollution:

Here are some reasons for light pollution and why we can’t see stars well these days:

  1. Bright Lights:
    The bright lights from cities and towns create a lot of glare, making it hard to see stars. It’s like when a bright light shines in your eyes and makes it difficult to see anything else.
  2. Too Much Light:
    With all the lights from buildings, streets, and signs, the night sky becomes brighter overall. This makes it harder for the faint light from stars to stand out.
  3. Light in the Air:
    The light from cities scatters in the atmosphere, bouncing off tiny particles and molecules in the air. This scattering makes the sky glow and makes stars appear fainter.
  4. Hazy Sky:
    Light pollution creates a kind of “haze” in the sky, making it harder to see stars clearly. It’s like looking through a foggy window that blurs your vision.

How we can control it:

To see stars better, lets helps to reduce light pollution. This can be done by using lights that point downward and are shielded, so the light doesn’t go up into the sky. Moreover,It’s also important to have regulations and rules about outdoor lighting to control brightness. By taking these steps, we can enjoy a darker, clearer sky and see the stars more easily

Let’s discuss this in details and see how you as a Citizen can contribute to reduce it.

Use energy efficient Product

  1. Use Proper Lighting:
    Ensure that your outdoor lighting fixtures are properly shielded and directed downwards. This helps to focus the light where it is needed and prevents unnecessary upward or outward light that contributes to light pollution.
  2. Use Energy-Efficient Lighting:
    Opt for energy-efficient lighting options such as LED bulbs. They consume less energy and should be directed more effectively, reducing the overall impact of pollution.
  3. Install Motion Sensors or Timers:
    Consider installing motion sensors or timers for your outdoor lights. This way, the lights will only be activated when necessary, minimizing the amount of time they are on and reducing pollution.

Your diligent actions to reduce Light Pollution

  1. Switch Off Unnecessary Lights:
    You should turn off lights which are not needed, both indoors and outdoors. With this simple action you can contribute in reducing overall light pollution and conserves energy.
  2. Advocate for Responsible Lighting:
    Raise awareness about the importance of responsible lighting in your community. Encourage neighbors, local businesses, and authorities to use properly shielded fixtures and promote lighting ordinances that minimize light pollution.
  3. Support Dark Sky Initiatives:
    Involve yourself in local dark sky initiatives or organizations working to protect and preserve dark skies. These groups often advocate for responsible lighting practices and work towards creating dark sky reserves or protected areas.
  4. Personal Actions:
    Make conscious choices to minimize your own light pollution impact. Close curtains or blinds at night to prevent indoor lights from spilling out.

By taking these steps, you can contribute to reducing light pollution in your community and help preserve the beauty of the night sky for everyone to enjoy.

Some statistics and Data on Light Pollution:


By now you know what are the main reasons why we could not see stars in night as we use to see in our childhood. Lastly, now you also know that how as a individual you can contribute to reducing Light Pollution and make our Sky Better.

In the next post we will discuss how can Government of a Country can contribute in reducing Light Pollution.

Light Pollution
Why we see less stars these days
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