The letter E appears twice in the word week but only once in the word year.. People can be tricked by focusing on trying to identify an event that happens twice during the span of a week but only once during the span of a year. However, the riddle's answer actually refers to the frequency with which the letter E appears in each of the two words. A similar riddle is: What occurs once in a minute, twice in a moment and never in one thousand years?. The answer is the letter M..
The first full moon was spotted on 1 July and the second will appear on the last day of the month â Friday, July 31. This appearance is the first such occurrence in three years since the last blue moon month in August 2012, the next will not be until January 2018. Astronomers predict it will only happen on 12 occasions between now and 2043.
That happens because it takes 27.3 days both to rotate on its axis and to orbit Earth. We see either the full moon, half moon or no moon (new moon) because the moon reflects sunlight. How much of it we see depends on the moon's position in relation to Earth and the sun.Though a satellite of Earth, the moon, with a diameter of about 2,159 miles (3,475 kilometers), is bigger than Pluto. (Four other moons in our solar system are even bigger.).The moon is a bit more than one-fourth (27 percent) the size of Earth, a much smaller ratio (1:4) than any other planets and their moons.This means the moon has a great effect on the planet and very possibly is what makes life on Earth possible.hat happens because it takes 27.3 days both to rotate on its axis and to orbit Earth. We see either the full moon, half moon or no moon (new moon) because the moon reflects sunlight. How much of it we see depends on the moon's position in relation to Earth and the sun.