Where is it partly cloudy and 860°F? Venus. Read about the eight planets in our solar system and Earth's special place in it. This book also includes instructions for making your own solar system mobile, and on the new "Find Out More" page learn how to track the moon and visit the best plant web sites.
M. Franklyn Branley Books
如果你住在月球上,会发现那里的白天和黑夜分别有地球上两个星期那么长!在地球上,我们也有白天和黑夜,不过加起来只有二十四小时,这多亏了地球旋转得快。用一盏灯当太阳,你自己当地球,看看为什么会有白天和黑夜。