Multiple choice general knowledge science & technology

Which moon has its length of day constantly changing

  1. Charon-Pluto

  2. Galatea-Neptune

  3. Hyperion-Saturn

  4. Thyone-Jupiter
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Saturn's moon Hyperion has a chaotic rotation with no stable axis, causing its day length to constantly change. Hyperion is an irregularly shaped moon with a sponge-like appearance, and its tumbling rotation means its orientation and apparent day length vary unpredictably. None of the other options (Charon-Pluto, Galatea-Neptune, Thyone-Jupiter) exhibit this characteristic.

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