Upcoming solar and lunar eclipses with live countdowns, visibility details, and links to NASA interactive maps.
An eclipse occurs when the Sun, Moon, and Earth align. In a solar eclipse, the Moon passes between the Sun and Earth, casting a shadow on our planet. In a lunar eclipse, Earth passes between the Sun and Moon, casting its shadow on the lunar surface.
Solar eclipses only happen during a new moon, when the Moon is directly between the Sun and Earth. They are rare at any given location because the Moon's shadow is narrow, sweeping a path just 100–250 km wide across the planet. Never look directly at a solar eclipse without certified eclipse glasses or a solar filter.
Lunar eclipses happen during a full moon, when Earth sits between the Sun and Moon. Unlike solar eclipses, they are visible from anywhere on the night side of Earth and are perfectly safe to watch with the naked eye. A total lunar eclipse can turn the Moon a dramatic red — the famous “Blood Moon” effect caused by Earth's atmosphere bending sunlight into the shadow.