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How brightly the moon glows is a mystery, but maybe not for long

A telescope soaring on an airplane above the clouds has begun measuring moonlight

Moon

New measurements of the moon’s light could make Earth’s celestial sidekick more reliable for double-checking satellite observations.

NASA

By Maria Temming

- More than 2 years ago

The lunar dark side may be the moon’s more mysterious face, but there’s something pretty basic scientists still don’t know about the bright side — namely, just how bright it is.