The Earth's atmosphere scatters artificial light which is sent up into the sky, and drowns out the view of many stars and galaxies.
Light pollution from urban areas and artificial sources like street lights can interfere with astronomers' ability to observe celestial objects clearly. Additionally, radio waves from telecommunications and other sources can disrupt radio telescopes that astronomers use to study the universe.
Astronomical observatories are built away from towns and cities to avoid light pollution, which can interfere with observations of celestial objects. Being in remote locations also helps minimize atmospheric disturbances and provides clearer views of the night sky.
Limited observations because of the light pollution. Can you see that there are actually two stars very close together in the center of the handle of the big dipper?
Optical telescopes are placed at high altitudes to minimize the distortion and absorption of light caused by the Earth's atmosphere. Higher elevations reduce atmospheric turbulence and light pollution, allowing for clearer and more detailed observations of celestial objects. Additionally, being above a significant portion of the atmosphere decreases the amount of water vapor and other pollutants that can interfere with the quality of the images captured.
Air pollution like smog, or smoke and fumes from factories.
The Milky Way is always there, day or night. The bending of light through space is how we see it, but we can only see it or see it the best if the sky is clear (light or no clouds) and has only light pollution. Heavy clouds, rain, heavy pollution, as well as city lights can interfere with humans being able to see anything in the night sky.
Telescopes are often located in deserts because deserts offer very dry and clear atmospheric conditions, which are ideal for observing celestial objects. The dry air minimizes atmospheric distortion, providing astronomers with clearer and more detailed images of the night sky. Additionally, deserts have fewer artificial lights, reducing light pollution that can interfere with astronomical observations.
Deserts usually have little cloud cover and humidity, both of which interfere with visibility. Most telescopes are located far from cities so there is little light pollution.
Light pollution is not a crime yet, but buildings should atempt to reduce it. Light pollution is still a crime against the environment.
Light pollution does not affect astronauts, it affects astronomers.
Light pollution has two types of impacts: * A bright sky makes it more difficult for astronomers to smake observations * Local lights can impact breeding cycles and litter sex distributions in several species of animal (e.g. minks). This is important as hte female minks are more valuable to the mink farmer.
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