Bobby Garcia no name or what is a vernal equinox An equinox is an astronomical event in which the plane of Earths equator passes the center of the Sun Equinoxes occurs twice a year around 21 March and 23 September ID: 438073
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Slide1
Vernal equinox
Bobby Garcia
no name or #Slide2
what is a vernal equinox
An equinox is an astronomical event in which the plane of Earth's equator passes the center of the Sun. Equinoxes occurs twice a year, around 21 March and 23 SeptemberSlide3
March equinox
The march equinox marks when the northern
hemosperes
starts to tilt toward the sun which means longer sunnier days in the northern
hemospere
. The march equinox is called the vernal equinox because it signals the beginning of spring.Slide4
Celebration of the equinox
People have celebrated the vernal equinox for centuries. For ancient cultures the vernal equinox signaled that their food supplies would soon return. Early Egyptians ever built the great sphinx so that it points directly toward the
the
rising sun on the day of the vernal equinox. Slide5
Diagram of the equinox
At the equinox the sun is at one of the two opposite points on the celestial sphere where the celestial equator and ecliptic intersect. These points of intersection are called
equinocyial
points.