These galaxies may constitute an answer to the long-standing puzzle of the missing baryonic mass in the universe.
2
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。
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.
3
天文学家长期以来都在推测,最终可能会在星际空间或者是在难以探测的大量星系中发现丢失的重子质量。
Astronomers have long speculated that the missing baryonic mass might eventually be discovered in intergalactic space or as some large population of galaxies that are difficult to detect.