Astronomers have long speculated that the missing baryonic mass might eventually be discovered in intergalacticspace or as some large population of galaxies that are difficult to detect.
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。
2
The net result is a continuous flow of gas, starting as hot gases in intergalacticspace and ending as a drizzle of cool gas called a "cooling flow," falling into the central galaxy.