恒星大气层是恒星的最外层区域，位置在核心、辐射层和对流层之上，依照独特的特征可以分为数层：光球层，色球层，过渡区。
一旦我们找到这样一颗行星，我们就要想办法将它的恒星射过来的光线遮暗，这样我们就能彻底“看见”这颗行星，并分析它的大气层。
Once we detected a planet, we would have to find a way of blotting out the light from its star, so that we would be able to 'see' the planet properly and analyze its atmosphere.
这样的一颗大恒星也将可能会环绕一层厚厚作为生命的最初条件的大气层。
Such a large moon would also be able to hold onto a thick atmosphere, making it a prime spot for life.
Yepun望远镜发出的激光束在地球大气层上空56英里(90公里)处形成了一颗人造恒星。
Yepun's beam creates an artificial star 56 miles (90 kilometers) up in Earth's atmosphere.
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