Hearts Scales have been essential in recent Pokemon games, though they may seem superfluous. In Pokemon Sun and Moon, as in past games, they can be traded to the move relearner to teach your ...

The objects all have the correct scale - but the Sun is in the wrong place (hopefully, this is obvious). The Earth and moon are the correct distance apart relative to their size.

Heart Scales in Pokemon Sun and Moon are just as important as they have been in previous generations. On the surface, they are just the random item that Luvdisc carries around about 50% of the time.