The plane in which the Moon moves around Earth is not exactly aligned with the Ecliptic (the plane of Earth's orbit). Thus, the Moon usually passes north or south of the point where there would be an eclipse.
No. During the 20th Century, they averaged about 2.3 per year.
Every year
Solar and lunar eclipses don't occur every month because the orbits of the Earth and the Moon are tilted relative to each other. Eclipses can only happen when the Sun, Earth, and Moon align perfectly, which occurs during specific phases of the Moon (new and full). This alignment happens only a few times a year, resulting in a limited number of eclipses rather than one every month.
Solar and lunar eclipses do not occur during every lunar orbit because the Moon's orbit is tilted about 5 degrees relative to Earth's orbital plane. This tilt means that during most full moons and new moons, the Earth, Moon, and Sun are not perfectly aligned. Eclipses only happen when the Sun, Earth, and Moon align closely enough, which occurs during specific points in their orbits known as "eclipse seasons." These eclipse seasons happen approximately every six months, allowing for a limited number of eclipses each year.
During the 100-year period from 1901 to 2000, there were 228 solar eclipses and 229 lunar eclipses. On the average, that's 2.28 or 2.29 of each kind, for every year, but in in individual year, it can be as many as 4
Lunar eclipses occur when the Earth passes between the Sun and the Moon, causing the Earth's shadow to fall on the Moon. Solar eclipses happen when the Moon passes between the Sun and the Earth, blocking the Sun's light from reaching Earth. Lunar eclipses can only happen during a full moon, while solar eclipses can only occur during a new moon.
There are two main types of eclipses: solar and lunar. Lunar eclipses occur every 6 months. Solar eclipses occur 2-5 times per year. Eclipses can be partial or total. Partial eclipse covers only part of the sun or moon, while total covers the full entity.
During the 100-year period from 1901 to 2000, there were 228 solar eclipses and 229 lunar eclipses. On the average, that's 2.28 or 2.29 of each kind, for every year, but in in individual year, it can be as many as 4.
From the Wikipedia article, "Solar eclipses on Pluto": "The next period of time when solar eclipses can occur on Pluto will begin October 2103, peak in 2110, and end January 2117. During this period, solar eclipses will occur at some point on Pluto every orbit of Charon."
No, solar eclipses occur during the day when the Moon passes between the Earth and the Sun, casting a shadow on the Earth. Nighttime eclipses are lunar eclipses when the Earth passes between the Sun and the Moon.
Typically, lunar eclipses occur once or twice a year. Because more than half of all lunar eclipses are partial, and because lunar eclipses are visible only from the side of the Earth where the Moon is up, you would generally be able to see a total lunar eclipse every other year or every 3rd year from your location. The rest of the eclipses would be either partial, or not visible from your location. You can check the NASA Eclipse Web Page to see the catalog of all eclipses from 2000 BCE to 3000 AD at the link below.
No, annular eclipses do not happen every year. They occur when the Moon is farthest from Earth, making it appear smaller and not fully cover the Sun during the eclipse. This alignment is not a regular occurrence, so annular eclipses happen less frequently than total solar eclipses.