Why do the Perseids return each August when their parent comet takes much longer to orbit the Sun? Earth crosses the dusty stream left by comet 109P/Swift-Tuttle on its own yearly journey. Tiny pieces entering our atmosphere create the streaks we call meteors. The comet itself does not have to return each year.
Sources:
https://science.nasa.gov/solar-system/meteors-meteorites/perseids/
https://youtube.com/shorts/JV6fkDZHr1s
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