Gwd 4-36 求助！！

ariesmilla

These galaxies may constitute an answer to the long-standing puzzle of the missing baryonic mass in the universe. 我認為第二段第一行就已經先解釋它下面要講的東西，在這邊提到的

Baryons—subatomic particles

(30)      that are generally protons or

neutrons—are the source of

stellar, and therefore galactic,

       luminosity, and so their numbers

can be estimated based on how

(35)    luminous galaxies are.  對應下面 Astronomers have

long speculated that the missing

baryonic mass might eventually

(45)      be discovered in intergalactic

space or as some large popu-

lation of galaxies that are difficult

to detect. 所以是解釋為什麼，而不是how  小小淺見...望NN指點...