Moon Phases - NASA https://science.nasa.gov/moon/moon-phases/

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What is the only object in our solar system that shines with its own light?

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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The Sun.

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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What are the eight lunar phases in order?

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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New moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, waning crescent.

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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How long does it take for the moon to complete one cycle of phases?

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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About 29.5 days.

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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What do we call the effect when the moon appears to twist and roll in the sky?

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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Libration.

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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What is earthshine?

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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It is the light reflected from Earth that illuminates the dark side of the moon.

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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When can we see the moon during the day?

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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During the first and last quarter phases.

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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What is the distance of the moon from Earth?

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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About 238 855 miles (384 399 km).

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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What is tidal locking?

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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It is when the moon spins on its axis exactly once each time it orbits Earth, showing only one side to us.

_{Moon Phases - NASA Science. (n.d.). Retrieved from https://science.nasa.gov/moon/moon-phases/}

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This is invisible from Earth, with its illuminated side facing the Sun. It rises and sets with the Sun, but due to its orbital tilt, it usually passes near, not directly between, Earth and the Sun.

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This appears as a thin sliver of light when most of the Moon’s illuminated half faces away from Earth. It grows daily as its dayside becomes more visible, rising slightly later each day.

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