Izumi, Miki, and Risa invite Hayate and Nagi to their school club which Hayate uses as a way for Nagi to socialize.
So the farther a star is from 
Earth, the faster it's moving away
Así que cuanto más lejos de la Tierra esté 
una estrella, más rápido se estará moviendo.
Então, as estrelas mas distantes da
Terra se movem mais rapidamente.