why there are eclipse?

Question

why there are eclipse not any thing ells

Answer 1

To enjoy us and to give very exact length of the years and months

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Answer 2

An eclipse involving the Sun, Earth and Moon can only occur when they are in a line. Because the plane of the orbit of the Moon is tilted with respect to the plane of the orbit of the Earth (the ecliptic), eclipses occur only when the three bodies are near the intersection (the node) of these planes. The Sun passes either node once a year, and eclipses occur in a period of about two draconic months around these times. There can be from four to seven eclipses in a calendar year. They repeat according to eclipse cycles.

You could get more information from the link below...

Answer 3

Eclipses are relatively rare, but they occur when either the Moon blocks your view of the Sun, or the Earth blocks the Sun from reflecting from the Moon. Since the Earth's and Moon's orbits are not coplanar, most months go by with no eclipse at all.

What's amazing is that the Moon and th Sun are so close in angular subtense that makes the Moon such a greater solar eclipser.
http://en.wikipedia.org/wiki/Moon angular size 29' to 33'
http://en.wikipedia.org/wiki/Sun angular size ~32'


True eclipses need both objects to have similar angular subtense to make it a real eclipse.

Otherwise, one can consider the Moon to "eclipse"all the stars that are hidden behind it. Likewise, when Mercury or Venus are in front of the Sun, we'd all it an eclipse instead of a transit.

Answer 4

Eclipses occur whenever the moon gets between the sun and the earth (solar eclipse), or the earth gets between the sun and the moon (lunar eclipse). The reason why they occur from time to time is because the orbital path of the moon is nearly coplanar with the orbital path of the earth around the sun.

Answer 5

Because there are shadows.