However, the amount of helium in the universe, as measured by spectroscopy, suggests that there are far more baryons in the universe than estimates based on galactic luminosity indicate.

然而，通过光谱学测量，宇宙中氦的数量表明，宇宙中重子的数量要比基于星系光度所估计的要多得多。

youdao

Our present understanding of the Sun's luminosity holds that it should have progressively increased, not decreased, over the course of Earth's history.

当前我们对太阳光度的认知是：在地球的历史进程上，太阳光度应该是逐渐增加而不是减少的。

youdao

For a few years its luminosity flared up to about 10,000 times the present-day luminosity of the Sun.

有几年它的亮度一度达到了现在的太阳亮度的一万倍左右。

《柯林斯英汉双解大词典》

The model corrected for possible distortions in luminosity resulting from non-economic sources like reflections on large bodies of water, which can distort satellite images.

FORBES: The Case for Keeping the Lights On

It is similar to a Hertzsprung-Russell (HR) diagram but the latter plots luminosity (or absolute magnitude) rather than just apparent brightness and a knowledge of the distances of the stars plotted is also needed.

ENGADGET: 9-gigapixel image of the Milky Way reminds us just how small we truly are

Though Dixon wears his eco credentials lightly, his crusade to make low-voltage lighting attractive is second to none, as illustrated by Luminosity, a collection of lamps, lights and shades that he also presented last month in Milan.

WSJ: Tom Dixon Makes Things Better