If you look at the night sky, it can range from a dusty glow to an inky black expanse with thousands of bright stars, depending on where you are.
on a clear night offers predictions Several thousand stars are visible to the naked eye, but the light-polluted brilliance of city and small-town lights prevents us from seeing all the splendor of the cosmos.
Astronomers use the Bortle Scale, which rates visibility from one to nine, to describe how much light pollution a particular place has. John Bortle first described it in the 2001 edition. Sky and Telescope, an astronomy magazine.
Each level classifies the night sky according to its cosmic views. You can find the Bortle Scale level for your night sky using the interactive map tool at lightpollutionmap.info.
These images show how many more stars you can see in truly dark skies, outside cities, suburbs, and other human light sources:
Observable: moonclosest planets and a handful of brightest stars
Where in the USA: New York, Las Vegas, Los Angeles
An extremely bright light-polluted sky, often found in large cities, glows orange. While not as potentially harmful as other types of pollution, light pollution can affect human health.
Observable: Constellations may be slightly visible
Where in the USA: Boston, Massachusetts; Austin, Texas; Indianapolis, Indiana
At the eighth level, the sky can be so bright due to light pollution that you can read with it. Most stars and even constellations will be invisible to the naked eye.
Where in the USA: Seattle, Washington; Savannah, Georgia; salt lake city, Utah
Light pollution in these areas causes the entire sky to appear light gray, and the Milky Way is not effectively visible.
Observable: The Andromeda Galaxy looks only vaguely
Where in the USA: Albuquerque, New Mexico; Lincoln, Nebraska; Bloomington, Indiana
At the sixth level, the clouds appear quite bright and the sky shines a grayish white. Under these conditions, light pollution is very bright.
Observable: The Milky Way Galaxy may appear faint
Where in the USA: Burlington, Vermont; Santa Fe, New Mexico; Great Junction, Colorado
Most of us spend our lives at or above this Bortle Scale level, according to the telescope shop. OPT Telescopes.
At level five, light pollution will be visible in most, if not all, directions. The clouds are brighter than the sky itself and the Milky Way is fainter.
Observable: Milky Way, galaxy triangle
Where in the USA: Twin Falls, Idaho; Flagstaff, Arizona; Wind River Indian Reservation, Wyoming
Light pollution can be viewed from several directions. Under this sky, the sky background starts to look gray instead of black.
Where in the USA: Yosemite National Park, California; Everglades National Park, Florida; Great Smoky Mountains National Park, Tennessee
You can see the Milky Way but fine detail is gone. Some clouds are illuminated in the direction of the light sources, but the upper clouds remain dark.
Observable: Milky Way galaxy, Magellanic Clouds
Where in the USA: Cherry Springs State Park, Pennsylvania; Adirondack Park, New York; Joshua Tree National Park, California
The Milky Way is highly visible to the naked human eye. sky flareA light fog from scattered light sources on the ground is weakly visible on the horizon.
Observable: Milky Way Galaxy, Andromeda Galaxy, Orion Nebula
Where in the USA: Big Bend National Park, Texas; Grand Canyon National Park, Arizona; Denali National Park, Alaska
The First Order sky provides an unobstructed view of the cosmos, similar to what Galileo saw. The night sky is brimming with stars, making faint constellations difficult to distinguish. The Milky Way is so bright it can cast shadows.
This article was originally published by Business Content.
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