Why are the pre-dawn hours the most productive time for viewing meteor showers?
Answer
The Earth rotates to face its forward-moving direction in its orbit.
Between midnight and dawn, the rotation of the Earth brings your specific location to face the direction the planet is traveling as it orbits the sun. This effectively places you on the leading edge of the Earth, similar to the windshield of a car driving through an insect swarm. In this position, the Earth crashes into space debris head-on rather than having to wait for the debris to catch up from behind. This geometric alignment maximizes the number of visible meteors compared to the evening hours when you are on the back side of the planet.
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Best time to catch the Perseid Meteor shower - YouTube
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