The document describes the different types of solar and lunar eclipses. A solar eclipse occurs when the moon passes between the earth and sun, casting its shadow on parts of the earth. There are two parts to the moon's shadow, the inner dark umbra and outer lighter penumbra. During an annular eclipse, the moon is too small to completely cover the sun, leaving a bright ring visible. The document also explains that a lunar eclipse occurs when the moon moves into the earth's shadow, and can only happen during a full moon. It warns never to look directly at the sun without proper eye protection to avoid eye damage, especially during partial phases of a solar eclipse.