Since venus is the third brightest object after the sun and the moon in the sky , we have special names for it . during the period that we can see it before sunrise , we call it the morning star . it lasts for about 100 days . when we can see it after sunset , we call it the evening star 金星光芒万丈，是天空中除了太阳及月亮之外第三颗最光亮的天体，在日出前出现的金星，我们称为晨星，这个阶段约维持一百天，之后金星会在日落后才出现，这时便称为昏星。
