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.