Jay AndersonĪ solar eclipse, such as the one in August 2017, occurs only at new Moon, when the lunar disk passes directly between us and the Sun and the Moon's shadow falls somewhere on Earth's surface.Ĭonversely, a lunar eclipse takes place during full Moon, when our satellite passes through Earth's shadow. Eclipse "windows" occur six months apart. Why Do Eclipses Happen? Eclipses of the Sun or Moon can only occur when the Moon crosses the plane of Earth's orbit (orange circle) very close to the time of new or full Moon. The mix of five events occurring in 2019 is especially interesting, because no two will be alike! There'll be three different types of solar eclipse - one each of partial, annular, and total - along with a total and a partial lunar eclipse. Up to seven eclipses of the Sun and Moon can take place in one year, though the last time that happened was 1982, and the fewest possible is four. There'll be something for everybody in 2019, with total, annular, and partial solar eclipses - and total and partial lunar eclipses to look forward to.
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