Watch How the Universe Works - Season 3 Episode 7

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Episodes — Season 3
#	Title	Watch
1	Journey from the Center of the Sun	Play
2	The End of the Universe	Play
3	Jupiter: Destroyer or Savior?	Play
4	First Second of the Big Bang	Play
5	Is Saturn Alive?	Play
6	Weapons of Mass Extinction	Play
7	Did a Black Hole Build the Milky Way?	Playing
8	Our Voyage to the Stars	Play
9	The Search for a Second Earth	Play