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1. About______ Earths can fit inside of the sun
2. The OBSERVABLE universe is _____ light-years in diameter
3. There is a supermassive black hole at the center of every galaxy
4. Observable matter makes up ___% of the universe
5. The sun makes up ___% of the mass of the solar system
6. The average temperature of the universe is ___ Fahrenheit
7. The Universe is ____ Years old