<P> Typically the cross-section of the objects involved in an astronomical eclipse are roughly disk shaped . The region of an object's shadow during an eclipse is divided into three parts: </P> <Ul> <Li> The umbra, within which the object completely covers the light source . For the Sun, this light source is the photosphere . </Li> <Li> The antumbra, extending beyond the tip of the umbra, within which the object is completely in front of the light source but too small to completely cover it . </Li> <Li> The penumbra, within which the object is only partially in front of the light source . </Li> </Ul> <Li> The umbra, within which the object completely covers the light source . For the Sun, this light source is the photosphere . </Li> <Li> The antumbra, extending beyond the tip of the umbra, within which the object is completely in front of the light source but too small to completely cover it . </Li>

What is the shadow of an eclipse called