The universe that we can see or react to is called the visible universe, or more strictly baryonic matter. It's only about five percent of the universe. The branch of science that deals with its structure is called particle physics....
The earth is not the center of the universeOnly the moon revolves around the earthAll the planets orbit the sunThe distance from the Earth to the Sun is negligible compared to the distance to the starsThe stars seem to move...
The Twilight Phenomenon is a phenomenon that is visible to ground observers as a booster rocket or missile ascends from darkness to sunlight.This phenomenon usually occurs 30 minuted before sunrise or 60 minutes after sunset.
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