Transit Of Mercury In USA

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What Does Transit Of Mercury Means? A transit of Mercury across the Sun takes place when the planet Mercury comes between the Sun and the Earth, and Mercury is seen as a small black dot moving across the face of the Sun. Mercury is a physically small planet, only three thousand miles in diameter, compared to Earth’s almost eight thousand. During the transit, Mercury will be visible as a tiny dot near the Sun’s northern edge. The planet will be ten seconds of arc in diameter, only one-half of one…