Nearby planets can affect how one planet 'wobbles' on its spin axis, which contributes to seasons. Mark Garlick/Science Photo Library via Getty Images Spring, summer, fall and winter – the seasons on ...
Far out in the Saturn system, a small world refuses to behave. Iapetus spins in a way that should not be so stable, wears a ...
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The familiar 24‑hour day is based on how long it takes the Sun to return to the same position in our sky, not on an ...