The work took advantage of the huge 3-D galaxy map called Mega Z. Because there are so many neutrinos , their tiny masses add up to influence the overall distribution of galaxies .
这项研究利用了MegaZ这个巨大的三维星图。原因在于，星系中有众多的中微子，而当这些微不足道的质量加在一起时，其总和就会影响整个星系的分布。
galaxy mega