The Moon DOES enter the Earth's shadow from time to time. That's when we get a lunar eclipse.
In fact, there's an eclipse due in a few days from today (on April 14th or 15th 2014, depending on your time zone).
However, because the Moon's orbit is tilted relative to the plane of the Earth's orbit around the Sun, the Moon usually misses the Earth's shadow.
definitley the earths
A lunar eclipse.
It is not.
Solar Eclipse
The shadow of the Earth on the moon's surface is the reason that it takes different phases. When the Earth completely occludes the moon, it is a new moon, and when there is no shadow, it is a full moon.
lunar eclipse
Lunar
It is called a solar eclipse when the Moon's shadow hits Earth, and a lunar eclipse when Earth's shadow hits the Moon.
Eclipse
That's when we have a lunar eclipse.
An eclipse
That would be a lunar eclipse.