It became difficult to read. A blight entered the atmosphere and dulled its luminosity.

阅读也变得困难起来。一种有害的因素进入了大气，使光明变得幽暗。

One is to look for stars in the nearby universe whose absolute luminosity we know.

一种是在附近的宇宙中寻找我们知道其绝对光度的恒星。

In addition, the sun's increasing luminosity will cause severe effects on Earth.

此外，太阳光度的持续增加将对地球造成严重的影响。

In 3.5 billion years, the sun's luminosity will have increased by 40% of its present value.

在 35 亿年后，太阳的亮度将比现在增加 40%。

Finally in 1 billion years the sun's luminosity will have increased 10% from its current state.

最后，在十亿年后，太阳的光度将比目前的状态增加 10%。

When it turns into a red giant, the Sun will increase its luminosity by an incredible 2000 times.

当太阳变成一颗红巨星时，它的光度会增加2000倍，十分惊人。

That huge increase in luminosity does more than just make the Sun bright, though.

然而，光度的巨增不仅仅使太阳明亮。

Due to the sun's increasing luminosity, the average surface temperature will have increased to 47 degrees celsius.

由于太阳亮度的增加，太阳表面的平均温度将上升到 47 摄氏度。

Catherine could think of nothing of the kind, and Morris's luminosity seemed almost pitiless.

凯瑟琳什么也想不起来， 莫里斯的光芒似乎几乎是无情的。

It's an incredibly slow but inexorable process: the Sun's increased in luminosity by about 40% since it was born.

太阳的光度自诞生以来已经增加了大约40%。