Skyglow : New Study
A new study has found that non-natural light had increased the brightness of Skyglow, by 9.2-10% every year between 2011 and 2022 with significant ecological, health and cultural implications.
- Researchers have analyzed a global database of what the dimmest star visible from a particular location is; the database had more than 51,000 entries submitted by citizen scientists.
- The Skyglow, is an omnipresent sheet of light across the night sky in and around cities that can block all but the very brightest stars from view.
- The brightening of the night sky over inhabited areas because of streetlights, security floodlights and outdoor ornamental lights cause the Skyglow.
- This light floods directly into the eyes of the Nocturnal (active at night) and also into the skies and misleads their path.
- ‘Skyglow’ is one of the components of light pollution.
- The Skyglow had brightened around 6.5% over Europe, 10.4% over North America, and 7.7% over the rest of the world.
- The finding is significant because it disagrees with satellite-based data, which has indicated that the rate of increase has been around 2% per year.
- The discrepancy is probably the result of the satellites being unable to ‘sense’ blue light emitted by LEDs and to study light that is emitted parallel to the ground.