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Quarter moon or a half moon?

Half the moon always faces us. And half the moon is always lit by the sun. But, in the language of astronomers, there are no ‘half moons.’

What is earthshine?

That glow over the unlit part of a crescent moon – called earthshine – is light reflected from Earth.

What’s the youngest moon you can see?

An astrophotographer in France captured an amazing photo of the moon at the precise instant of new moon.