Eclipses

A Celestial Play of Shadows

Eclipses are spectacular phenomena where celestial bodies conceal each other through a play of shadows and alignments. A lunar eclipse occurs when our satellite passes through Earth's shadow, while a solar eclipse happens when the Moon partially or completely obscures the Sun's disk. Although rare at any given location, these events actually occur several times a year on a global scale.

The Role of Syzygies

Eclipses occur during syzygies, moments when the Sun, Earth, and Moon are almost perfectly aligned. A solar eclipse takes place during the new moon, when the Moon is positioned between the Earth and the Sun. Conversely, a lunar eclipse occurs during the full moon, when the Earth comes between the Sun and the Moon. These geometric configurations explain the regularity of eclipses, approximately every six months.

A Spectacle Dictated by Celestial Mechanics

The frequency and nature of eclipses depend on the inclination of the Moon's orbit and the relative positions of the three bodies. Depending on the circumstances, an eclipse can be total, partial, or annular. Each event offers a unique opportunity to observe the dynamics of the Earth-Moon-Sun system and better understand the laws governing their movements.

There are   items on this page