The ever-shifting phases of Earth's moon present a wealth of targets for amateur astronomers to explore, ranging from ...

As the Moon completes its cycles every month, its various phases present a rich tapestry for skywatchers and astronomy ...

This is known as the Lunar X or Werner X. If you scan your eyes along the terminator line, you may also see a temporary "V" on the Moon, too. Every celestial body orbiting the Sun has a terminator.

July's third quarter moon phase occurs at 8:38 EDT (0038 GMT) on July 17, according in-the-sky.org. At this moment, skywatchers in the northern hemisphere will see the left side of the lunar disk ...