The Milky Way, a torrent of stars flashing in the dark night sky, is the source of early inspiration for mankind.
The ancient Egyptians saw it as a pool of milk, and in Hindu mythology the galactic arm was compared to a dolphin swimming in the sky.
Countless scientists, philosophers and artists, including Galileo, Alex doode and Vincent van Gogh, have used the Milky Way as their muse. (
Read how much is the Milky Way? âx80x9d)
However, a new map of the night sky all over the world shows that more than 80% of the Earth's land area and 99% of the American and European population live under the sky covered by human beings.
The light that makes the milky way almost invisible.
Fabio Falki, researcher at the Institute of Light Pollution Science and Technology (ISTIL)
In Thiene, Italy, a new survey was announced on Friday to quantify the quality of the night sky in every region of the world.
Ground production using more than 35,000
Basic observations and six-month data collected in 2014 with Sumi National polar region
Track partnership (NPP)
The satellite, Atlas is an update to the 2001 works, showing in stark contrast the darkest and brightest positions of the planet.
Singapore is a place of eternal twilight, with the entire population living under the sky and their eyes so bright that they can't fully adapt to night vision, let alone see the Milky Way.
Kuwait, Qatar and the UAE are almost as bad.
On the other hand, more than 75% of the population in Chad, the Central African Republic and Madagascar live near-
The original Sky, or the background light, accounts for less than 1% of the overall brightness of the sky.
According to falchi Kumar's analysis, residents of the Azores have the difference of living on the land farthest from the unspoilt Sky: they have to travel nearly 1,100 miles to reach Western Sahara, experience a dark landscape (
Unless they travel to sea).
Light pollution at Joshua Tree National Park in California has blurred the landscape.
In the first local Atlas, we know something about what is going on, but the numbers are shocking, Falfalchi said.
We have lost our connection to our roots, literature, philosophy, science, religion, all of which are related to the contemplation of the night sky.
A new generation can no longer appreciate this beauty. âx80x9d (
See an amazing new view of the Galaxy. âx80x9d)Study co-
Author Dan Duriscoe, a physical scientist at the National Park Authority's natural sound and night sky division, has worked at the park authority for 36 years and has been collecting light measurement data in the National Park since 1994.
On the east coast, in addition to several scattered places in West Virginia, Pennsylvania and New England, it is very difficult to reach a place where you can see the stars without restrictions.
People were able to get this experience closer to home a few decades ago, but now they are forced into Utah, Death Valley or Yellowstone, away from the backyard.
Public awareness of this is a rare experience has improved and become an experience that will cost them some money to see.
The Suomi satellite swept the Earth's poles 14 times a day, creating a complete set of global Heights
Resolution day and night images every 24 hours.
Along with Pierantonio Cinzano, a colleague from Falchi and ISTIL, with the National Park administration (NPS)
State Administration of Oceans and Atmosphere (NOAA)
Make Atlas.
The 2001 Atlas only observed the light that escaped from the Earth to space, and the new data revealed where the light reflected from the sky to the surface of the Earth. (
In the center of the Galaxy, you can see the tomb of the stars. âx80x9d)
Falchi plans to release a printed version of the Atlas and is also working on an interactive digital atlas, similar to the one made in 2006 using 2001 data.
A map shows light pollution in North America and South America.
Chris Elvidge, a colleague
The authors of the study and scientists at the National Environmental Information Center at noaa Kumar said he expected satellite data and analysis to be useful not only to astronomers, but they have a vested interest in the dark night sky, there is also an interest in biologists who study the effects of light on nocturnal organisms, medical researchers and urban planners who are interested in the effects of human health.
A disadvantage of the satellite imaging instrument is that the detection of the blue and purple parts of the visible spectrum is limited, and white LEDs appear during SATELLITE scanning.
While efficient, white LEDs can be very bright, and as municipalities begin to install them in street lights and other outdoor uses, in the long run, the impact of the led could actually worsen overall light pollution.
Several cities have joined the LED trend without citizen approval, said Connie Walker, an International Dark organization board member at the Tucson National Optical Astronomical Observatory in ArizonaSky Association.
Jurisdictions interested in effective light pollution reduction can conduct research on the following two maps:and-
After the map, she says, compare what works and what works.
She said the atlas provides a consistent way to compare light pollution in different parts of the world over the past 15 years.
This map shows mild contamination in the Eastern Hemisphere.
Duriscoe says falchi's work is done entirely in his spare time and is a labor of love that helps to see the extent of the problem from an angle.
To solve the problem globally, no one else has tried it before, he said.
When you can step back and look at the whole earth and see the impact of our modern lifestyle on the ability of all cultures to enjoy the natural night environment, it shows how we take it for granted.
Once, communities with large telescopes, such as the Paloma Observatory outside San Diego, California, were proud of their efforts to protect the night sky, although this attitude seems to have weakened over the past few decades, but Duriscoe pointed out.
Now, however, with more and more research on the negative effects of over-exposure to light on humans, people are hitting 24-hour lifestyle.
Falchi personally participated in his own community and changed the way outdoor lighting was done.
As the current chairman of the nonprofit CieloBuio dark sky advocacy, he took the lead in launching a petition campaign in late 1990 to enact lighting reform laws in the area where he lives and works.
As the control of the new fixture type is installed, and the light intensity limit for a given area, although the number of new lights has tripled, the light-
Pollution levels in the region have remained unchanged from 2000 to today.
Mr. farch said that although most parts of Italy are now governed by similar laws, it is still only the beginning.
This is not enough to control light pollution, he added, but to stop the increase in pollution.
For almost all other contaminants, chemicals, particles, carbon monoxide, or anything else, the chart shows that almost all of these contaminants have decreased over the last 20 years.
We also need to reduce the pollution of light.