Why is the universe dark (black)?

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Is there oxygen in space?

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Is there an end to the universe?

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Are there really aliens?

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Why is there a leap year every four years, why is there

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Are there really Martians?

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Who decided on the calendar and how?

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Why do we have time?

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How and when was the sun formed?

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What is the sun made of?

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Why does the sun shine?

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Why is the sun burning?

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Why is there a sun?

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When will the sun go out?

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The sun is turning (it's moving).

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