GENERAL KNOWLEDGE

GK

GENERAL SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Maximum number of Lunar eclipses that can happen in one calender year is ____
A
3
B
4
C
2
D
5
Explanation: 

Detailed explanation-1: -In most calendar years there are two lunar eclipses; in some years one or three or none occur. Solar eclipses occur two to five times a year, five being exceptional; there last were five in 1935, and there will not be five again until 2206.

Detailed explanation-2: -The maximum number of solar eclipses that can take place in the same year is five, but this is rare. According to NASA calculations, only about 25 years in the past 5, 000 years have had five solar eclipses. The last time this happened was in 1935, and the next time will be in 2206.

Detailed explanation-3: -Why are there only 4-7 eclipses per year? The moon’s orbit is inclined to the ecliptic and only crosses the ecliptic twice per year.

Detailed explanation-4: -Exploratorium Senior Scientist Paul Doherty explains why not-the orbit of the moon is tilted relative to the orbit of the Earth around the sun, so the moon often passes below or above Earth. At those times, it does not cross the line between the sun and the Earth, and therefore does not create a solar eclipse.

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