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1. 
THE ... IS MADE UP BY THE SUN AND BILLIONS OF SMALLER BODIES
2. 
THE ... ARE NOT PERFECT CIRCLES, INSTEAD HAVE THE SHAPE OF AN ELLIPSE
3. 
EARTH IS A MEMBER OF A MUCH LARGER SYSTEM CALLED A ....
4. 
EARTH SOLAR SYSTEM IS PART OF THE ....GALAXY
5. 
THE SOLAR SYSTEM CONTAINS ... PLANETS
6. 
THE ... WAS FORMED ABOUT 4.6 BILLION YEARS AGO