您好，目前超图WebGL客户端还没处理到太阳这一块，我刚查询了cesium本身就是有sun的，您可以在这儿https://cesiumjs.org/refdoc/搜索一下“sun”，可以看到场景有个sun属性，sun类下有个glowFactor属性，解释是：
“Gets or sets a number that controls how "bright" the Sun's lens flare appears to be. Zero shows just the Sun's disc without any flare. Use larger values for a more pronounced flare around the Sun.”
把这个值设置大一点，应该会亮一些。
