Astronomy Question:

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The hydrogen envelope that surrounds the comets nucleus derives its hydrogen most directly from:

Astronomy Interview Question
Astronomy Interview Question

Answer:

1. gases escaping from the melting comet’s ice
2. hydrogen captured from interstellar space
3. breakdown of water by ultraviolet light
4. hydrogen in the solar winds

Answer: C

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The time between two successive meridian transits of the Sun as observed from a stationary spot on the Earth’s surface is called:At a location half-way from the Equator to the North Pole, which of the following correctly describes the stars apparent motion: