The document discusses facts about lunar eclipses. A lunar eclipse occurs when the moon moves into Earth's shadow and can only happen when the sun, Earth, and moon are aligned with Earth in the middle. During a lunar eclipse, the moon will turn red as Earth completely blocks direct sunlight from reaching the moon. Lunar eclipses can be seen from anywhere on the night side of Earth and can last up to nearly two hours. The document also lists upcoming lunar eclipse dates between 2022 and 2026.