The book of stars; being a simple explanation of the stars and their uses to boy life, written to conform to the tests of the Boy scouts . r after the Sun sets in theautumn. You will have no trouble in knowing Mercury if youcan only see him, for of all the stars in the heavens he twinklesthe hardest. His pale ash color will also help you to singlehim out from the stars about him. Mercury goes throughphases like our Moon, but these cannot be seen with the nakedeye. Mercury is a curious planet in that his day and his year areof exactly the same length, just like our Moon; this means thathe turns
The book of stars; being a simple explanation of the stars and their uses to boy life, written to conform to the tests of the Boy scouts . r after the Sun sets in theautumn. You will have no trouble in knowing Mercury if youcan only see him, for of all the stars in the heavens he twinklesthe hardest. His pale ash color will also help you to singlehim out from the stars about him. Mercury goes throughphases like our Moon, but these cannot be seen with the nakedeye. Mercury is a curious planet in that his day and his year areof exactly the same length, just like our Moon; this means thathe turns on his axis once in exactly the same length of time ittakes him to travel round the Sun. This causes one side ofMercury to be always turned toward the Sun, and of course thisside is hot and light, while the other side is always turned away THE PLANETS, THE SUNS KIDDIES 49 from the Sun and, consequently, it is dark and cold. Threeviews of Mercury as seen through a telescope are shown inFig. 52. Mercury is 36 millions of miles from the Sun. His diameter is 3,000 miles. His day is 88 of our days long. His year is 88 of our days
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