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 ...

The moon's last quarter - or final quarter phase will occur at 07:59 a.m. EDT (1159 GMT) on the morning of May 20 for viewers ...

Half the Moon is lit up and visible. It's one-quarter of the way through its cycle.

The different phases of the moon appear as the moon orbits Earth, changing our perspective of the half-lit moon, according to NASA. While the Earth’s shadow does not cause Moon phases ...

The moon will be exactly half-lit at 10:15 p.m. See if you can tell that the line separating light and dark on the moon is still a little short of being straight around sunset or a few hours ...

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 ...

The moon's disk will be bisected by shadow on May ... On May 20 the lunar disk will be bisected by the terminator, with the left half illuminated by the sun, and the right drenched in shadow ...