When and where on earth can you see the longest sunrise? And how long can you see it? Stumped? Well, then, sample another. What would you see from the moon more often: the sun or the earth? A five-member team of 14-to-17-year olds will hone their skills over the next 10 days to unravel a few more secrets that the skies hold. Their aim: to win as many medals as possible at the International Astronomy Olympiad that kicks off in Beijing on October 25. It will not be an easy task — they will be up against competition from over...