Why The Milky Way Is Going To Disappear Very Soon
0Can you spot your city in this fantastic picture? Chances are you might be living in a very light-polluted area.
For over three billion years, life on Earth has evolved in harmony with the natural cycles of light and darkness. The Sun, Moon, and stars have provided the sole sources of illumination, shaping the natural day-night pattern that has guided countless species. However, our modern cities have now become beacons of artificial light that overpower the darkness, disrupting this delicate balance and forever altering our environment.
The consequences of this profound shift may initially seem intangible, but a mounting body of evidence demonstrates the tangible and wide-ranging negative impacts of our brightened night sky. Firstly, the health of human beings is at stake. Not only that. The ecosystem and wildlife are also suffering as a result of our illuminated cities. Additionally, our relentless illumination of the night sky poses a grave threat to stargazing and astronomical research. The Milky Way, a breathtaking spectacle that has inspired awe and wonder for millennia, may soon vanish from our skies if we fail to take action. Light pollution obscures our view of the cosmos, hindering not only our ability to appreciate the vastness of the universe but also our scientific understanding of it.
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Darkest vs Most Polluted Regions
The composite picture displayed at the beginning of this video
was created using data collected by the Suomi National Polar-orbiting Partnership satellite. The satellite gathered this information over nine days in April 2012 and thirteen days in October 2012.
Montreal vs Aoraki Mackenzie Reserve
If you are not able to spot a single star in this picture, don’t worry: it’s not because you’re blind.
This picture of Montreal at night shows how light pollution can have a strong impact on the surroundings.
Pictures like this serve as a stark reminder of the impact of light pollution on our surroundings.
The Bortle Scale
The Bortle Dark-Sky Scale is a numerical scale used to measure the brightness of the night sky and stars at a specific location. It assesses the visibility of celestial objects and the impact of light pollution and skyglow. Created by John E. Bortle, it was published in 2001 to assist amateur astronomers in comparing the darkness of different observing sites. The scale ranges from class 1, representing the darkest skies on Earth, to class 9, which indicates inner-city skies.
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Effects on Birds Migration Patterns
Of course, in ancient times, humans used to light up their nights with fire. When we discovered electricity, things rapidly changed, and a lot of good things came with it. However, like carbon dioxide emissions and plastic, too much of a good thing has started to negatively
Effects on Human Health
To make it simple, human beings have internal biological clocks that regulate various physiological processes such as sleep-wake cycles, hormone production, body temperature, and cognitive function. These clocks, known as circadian rhythms, are synchronized with the 24-hour day-night cycle.
What can we do?
So how can we make the world a darker place? The solution may be simpler than you realize! By taking small daily actions, we can minimize the negative effects of artificial light on our environment.
What is our place in the Milky Way? And our place in the Universe? In ancient times, many people had the idea our planet Earth to be at the centre of the Universe, as stated by Aristotle and Ptolomeus in their ptolemaic – aristotelic concept of universe: according to this model, Earth is at the center of the universe and all the other celestial bodies orbit around it. Today lots of people think the same. But is this really the case? To answer this question, let’s try to to a travel in the universe, through space and time; we will start our travel from our planet to reach, in the end, the extreme boundaries of the universe.
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Credits: Ron Miller, Mark A. Garlick / MarkGarlick.com ,Elon Musk/SpaceX/ Flickr
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00:00 Intro
1:40 Darkest vs Most Polluted Regions
4:20 Light pollution
5:42 The Bortle scale
8:28 Effects on birds
10: effects on humans' sleep
11:30 What can we do?
12:58 What is our place in the Milky way?
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#insanecuriosity #milkyway #lightpollution