太阳系的第八大行星海王星是离太阳最远的行星,天文学家曾经认为由于它离太阳的距离较远、温度也较低,不太可能受到地球气候的影响。但是让天文学家惊奇的是,有迹象表明海王星的温度有升高的迹象,看上去海王星目前也在过春季了。科学家们观测到海王星南半球的明亮度有明显的增长,这是象征春季到来的主要标志。在6年前,美国天文学家拍摄到的图片便曾显示出海王星南端云带的规模和明亮程度都有显著增长。 The solar system’s eighth planet, Neptune, is the planet farthest from the Sun. Astronomers once thought that because of its distance from the Sun and its low temperature, it is unlikely to be affected by the Earth’s climate. But what astonished astronomers is that there are signs that the temperature of Neptune has increased, and it seems that Neptune is also in the spring. Scientists observed a significant increase in the brightness of Neptune’s southern hemisphere, which is a symbol of the arrival of spring. Six years ago, pictures taken by astronomers in the United States showed that the size and brightness of the cloud at the southern end of Neptune had increased significantly.