The star's luminosity is so high that it outshines all the other stars in the galaxy.
这颗恒星的亮度极高，比银河系中的其他所有星星都耀眼。
Astronomers measure the luminosity of distant galaxies to study their energy output and evolution.
天文学家通过测量遥远星系的亮度来研究它们的能量输出和演化过程。
A supernova explosion can increase its luminosity by billions of times within a matter of days.
超新星爆炸可以在几天之内使它的亮度增加数十亿倍。
The luminosity of a black hole is determined by its mass, with more massive ones emitting more intense light.
黑洞的亮度取决于其质量，质量越大，发出的光就越强烈。
The Sun's luminosity is about 333,000 times greater than that of Earth's full moon.
太阳的亮度大约是地球满月亮度的333,000倍。
Luminosity plays a crucial role in understanding a star's life cycle, from its birth to its eventual death.
亮度在理解恒星的生命周期（从诞生到最终消亡）中起着关键作用。
Some galaxies have an incredibly high luminosity due to the presence of quasars or active galactic nuclei.
有些星系由于存在类星体或活跃星系核，具有极高的亮度。
The luminosity of a celestial object is often expressed in units of solar luminosity (L☉).
天体的亮度通常以太阳亮度（L☉）为单位表示。
Astronomers use the concept of absolute luminosity to compare the brightness of objects regardless of their distance.
天文学家用绝对亮度的概念来比较不同距离天体的亮度。
A dimmer star might have a lower luminosity, but it could still have a longer lifespan due to its lower energy output.
亮度较低的恒星可能拥有较低的亮度，但因其能量输出较低，其寿命可能会更长。
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