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Every year it is becoming more and more difficult to see the stars. This will come as no surprise to residents of cities like Washington and Baltimore, where it is often difficult to see more than the moon.
Astronomers at the National Science Foundation’s NOIRLab (which stands for National Optical-Infrared Astronomy Research Laboratory) estimate that light pollution levels are increasing by 10% every year. Children born today in a city where 250 stars can be seen at night will only be able to see 100 by the time they turn 18.