An unseen companion star, nicknamed "Nemesis," may be sending comets towards Earth.

一颗看不见的伴星，绰号“复仇者(Nemesis)，可能会导致彗星撞击地球。”

youdao

An unseen companion star, nicknamed "Nemesis," may be sending comets towards Earth.

一颗看不见的伴星，绰号“复仇者(Nemesis)，可能会导致彗星撞击地球。”

youdao