Because the sun and moon's paths are regular (i.e they follow an orbit that is well-known to scientists), the time that they align themselves with the Earth can be calculated by using their velocity on their paths using relatively basic maths
This statement is inaccurate. Lunar and solar eclipses can be predicted with high accuracy using astronomical calculations and models. The timing and visibility of eclipses can be forecasted many years in advance.
On earth there are 2 eclipses, Lunar and Solar eclipses
Solar eclipses are more common than lunar eclipses.
'C' (the missing one) is the correct choice.
cos Quan Rui knows when to block it
Solar and lunar eclipses
Solar eclipses are caused by the shadow of the Moon hitting the Earth. Solar eclipses happen on the Earth.
It has predicted events such as solar eclipses to within a thirty second margin of error thousands of years in advance.
All eclipses are shadows. A solar eclipse is the Moon's shadow on the Earth. A lunar eclipse is the Earth's shadow on the Moon.
Five is the theoretical maximum number of solar eclipses in one calendar year; generally 4 partial eclipses and one total or annular eclipse. This configuration happens about every 200 years or so. Interestingly, there will be four solar eclipses in 2011; all will be partial eclipses, visible (if at all) only from polar regions. The last time there were five solar eclipses in a year was in 1935; the next time will be in 2206.
No, solar eclipses can be years apart.
Yes, these are called partial eclipses.