A total lunar eclipse happens when the moon is full and the Earth passes directly between the sun and the moon, blocking sunlight from reaching the moon's surface.
During the height of the eclipse the moon turns a reddish-brown color as direct light from the sun is blocked.
During the eclipse the moon passed through two parts of the Earth's shadow. The penumbra is an area where only a portion of the sun's light is blocked by Earth. The umbra represents the area where the Earth entirely blocks light from the sun.
The image below from starryskies.com shows the two parts of the Earth's shadow.
The phases of another total lunar eclipse in May 2004 is shown in the image below.