Light pollution has become a concerning problem that is rapidly affecting our ability to enjoy the beauty of the night sky. Researchers have even coined a new term, “noctaligia”, which translates to “sky pain”, to draw attention to this loss. As outdoor electric lighting becomes more common, the night is no longer dark for most people. Few can see the Milky Way from their own homes, highlighting the widespread impact of light pollution.

The term “noctaligia” was coined by Aparna Venkatesan, a cosmologist from the University of San Francisco, and John Barentine, director of public policy for the International Dark-Sky Association. They presented a report on this phenomenon to the journal Science, which eventually turned the report into a cover article commemorating the 50th anniversary of the first mention of light pollution in the journal.

The implications of light pollution go beyond mere nuisances. It has adverse effects on astronomy, human health, and the environment. Studies reveal that light pollution has increased by nearly 10% annually in the last decade. Mishandling of nighttime lighting restricts our ability to observe stars, interferes with our circadian rhythms, affects animal migration patterns, and harms vegetation.

What sets light pollution apart from other forms of pollution is its potential for reversal. Unlike other pollutants, light does not accumulate over time. Small changes, such as replacing blue LEDs with less disruptive options or adding shields to luminaires, can help us reclaim the night sky. The key lies in carefully designing lighting systems, using appropriate technology, and implementing effective regulations to mitigate the harmful effects of light pollution.

If we do not take action, we risk losing the little darkness that remains. Noctaligia not only represents the loss of our environment but also the loss of our heritage, our sense of place, and our identity. To preserve the beauty of the night sky for future generations, we must urgently address light pollution and prioritize responsible lighting practices.

– Noctaligia: A term coined by Aparna Venkatesan and John Barentine to describe the pain associated with the loss of the night sky (Source: Science).
– Science cover article on light pollution and its detrimental effects (Source: Science).