The term solstice translates as "Sun stop." Explain why this translation makes sense from an astronomical point of view. It makes sense because on that day the Sun ...

 O moves at the same speed as the Moon across the sky. 

O stops briefly hen at the zenith point.

O stops its motion through the zodiac, pausing in either Cancer or Capricorn. 

O stops its northward (or southward) motion and stars moving south (north)