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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