LIVE SCIENCE
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New Zealand night sky, over the Good Shepherd Church on the South Island. Astronomers worry that technological advances cause pollution. This source of pollution can prevent astronomers from getting a clear view of the sky. Limit the sensitivity and accuracy of their research.
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Nationalgeographic.co.id—Three sources of pollution—debris space, radio interference, and light pollution —very worrying right now. And his condition got worse. In the next two decades, when 20,000 satellites are launched into Earth orbit, LED the main source of artificial light. In addition, the cellular network will charge radio frequencies.
This source of pollution can prevent astronomers from getting a clear view of the sky. Limit the sensitivity and accuracy of their research.
Debris space may be the newest type of human pollution. According to data from the United States Strategic Command, six decades after the launch of Sputnik, the orbit around Earth is filled with 18,000 objects. These objects range from long pieces of material to satellite buses.
debris space endangering existing space telescopes. They can reflect light that could potentially confuse terrestrial telescopes.
“The worst is yet to happen. We will have ‘garbage’ space twice as many in the next 20 years, “said Patrick Seitzer, an expert astronomy from the University of Michigan. Several companies already have plans to launch 3000 satellites. A collision between two satellites can create thousands of debris.
Back on Earth, light pollution is a common phenomenon that is happening. Artificial light is a threat to research astronomy, personal safety, human and wildlife health. This problem is getting worse with the proliferation of billboards LED and LED blue light as an option for street lighting.
Lately, technology LED take over as the dominant type of outdoor lighting. With this in mind, lighting scientists and engineers say now is the right time to implement strategies to reduce the artificial light problem. By working together, they identify the types of LED best to use while suggesting actions to minimize overexposure.
In the International Dark Sky Association release titled Protecting Dark Skies for Astronomy and Life in 2017, the American Astronomical Society (AAS) held a workshop attended by representatives from several observatories and other dark sky advocates, including a lighting engineer.
Also Read: Due to Light Pollution and Habitat Damage, Fireflies are Threatened with Extinction
Bagaskara Blue/National Geographic Indonesia
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The activities of a number of visitors at one of the restaurants located at Bukit Bintang Tourism Object, Bantul, Yogyakarta with the background of the sparkling lights of the City of Yogyakarta. Excessive light pollution can cause navigational errors in animals.
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Addressing the inevitable increase in the use of LED lighting, participants identified three factors that are important for minimizing skylight: shielding, brightness, and light color. They hope that, in the future, places in the future can achieve this ultimate goal.
The ideal fixture allows light to point downwards—to the pavement, for example—but blocks light from pointing toward the sky. Dim lighting—resulting in less diffuse peripheral light—is preferred. The color of the light is also important so scientists show that blue light increases glare. As a result, it hinders vision, and even adversely affects wildlife behavior.
Also Read: Light Pollution Is Harmful To Wildlife, What To Do?
Green Bank Observatory
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The Green Bank Telescope in West Virginia is the largest fully controllable radio telescope in the world. With a dish larger than a football field, this telescope can pick up tiny signals from space and help map objects in the universe.
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Replacing them with LEDs only makes the problem worse. LEDs do have economic and environmental benefits: namely, they last longer and are more efficient. However, they emit a wide spectrum of light – including blue light which is bad for astronomy. It worsens the light in the sky and makes it difficult for us to see the stars.
Although it can not be seen with the naked eye, radio frequency is also detrimental to the world of astronomy, not inferior to light pollution. For astronomers who observe the universe through radio waves produced by stars and galaxies, radio frequency interference on Earth can drown out their signal.
Faced with disturbances on Earth, in 1998 astronomer Jean Heidmann proposed designing an observatory in an area far from the moon to be safe from space debris, light pollution and radio frequency. According to Harvey Liszt, of the National Radio Astronomy Observatory, astronomers may need to expand and ‘secur’ radio quiet zones such as the Green Bank Observatory in West Virginia.
Are you a supporter of dark skies?
Also Read: Be Careful, Exposure to Light at Night Triggers Obesity and Cancer
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