Light pollution refers to the excessive or misdirected artificial light produced by streetlights, buildings, and other sources. This brightening of the night sky can obscure our view of celestial objects, making it difficult to see stars and planets. It can also disrupt ecosystems and affect wildlife behavior, as many animals rely on natural light patterns for navigation and reproduction. In addition to its environmental impact, light pollution can have negative effects on human health. Exposure to artificial light at night can interfere with sleep patterns and circadian rhythms, leading to issues such as insomnia and fatigue. Efforts to reduce light pollution often involve using more efficient lighting and shielding fixtures to direct light where it is needed.