The Solar System consists of the Sun and the astronomical objects gravitationally bound in orbit around it, all of which formed from the collapse of a giant molecular cloud approximately billion years ago. of the system’s mass is in the Sun.
So going to institute this 'Clean your room' check list for kids! Laminate and use a dry erase marker. =) No more checking and rechecking - "Is my room clean yet, Mom?" Don't call me until the checklist is complete :)