Ground-based instruments such as the giant Keck telescopes have amassed statistics on distant (and therefore ancient) galaxies.
Ground-based instruments such as the giant Keck telescopes have amassed statistics on distant (and therefore ancient) galaxies.
地面望远镜，如巨大的凯克望远镜，已经累积了远处（所以是古老的）星系的大量统计资料。