Countless shadowed craters line the terminator all the way down to the moon's southern pole, while the 54-mile-wide (87 km) ...

Half of the moon will be illuminated as it reaches its first quarter phase on Monday, June 2. The first quarter phase marks ...

During this position, the moon's illuminated side is half-lit, according to the agency. A first-quarter moon is ideal for observing here on Earth, NASA says, because it rises in the afternoon ...