The moon, our closest celestial neighbor, has been a source of wonder, inspiration, and mystery for centuries. Its phases—waxing, waning, full, and new—are more than just a mesmerizing light ...

T he moon is constantly changing. Well, from our perspective, it is. Thanks to the different angles of light the sun shines, on Earth we get to see what looks like different moon "shapes".

The phases of moon. ... Named for a mythical instrument. Lyra’s diamond-shaped outline includes Vega, the fifth brightest star in the night sky. About 25 light-years away, ...

Whether you see it lit up during a full Moon, the faint outline from earthshine during a crescent phase or are viewing it silhouetted against the Sun during a solar eclipse, it, too, appears circular.