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Solar Eclipse

What is a Total Solar Eclipse?

A total solar eclipse occurs when the Moon passes between the Sun and the Earth, completely covering the face of the Earth. When the Moon covers the entire disk of the sun, the sky will darken, as if it were dawn or dusk. So, the temperature drops, and the birds become quiet, while the stars and planets become more visible. The Moon's shadow sweeps over the Earth's surface. 

The shadow consists of two parts; the umbra, a cone in which no direct sunlight penetrates and the penumbra, which is reached by the light from only a part of the Suns disk.

The diameter of the sun is about 400 times the Moons, but also about 400 times further away, which makes the total solar eclipse possible. 

Weather permitting, people in the path of a total solar eclipse can see the Suns corona, the outer atmosphere, which is otherwise obscured by the bright face of the Sun. 
Balloon Project: