Seasons
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Networks:
Watch Providers:
JustWatch makes it easy to find out where you can legally watch your favorite movies & TV shows online. Visit JustWatch for more information.
First Aired: December 31, 2015
The night sky is a time machine. The further we look out into the universe, the further back in time we reach. What we see in the night sky is only a small percentage of the contents of the Universe, most is dark matter and dark energy. We know it exists; however, its nature eludes us for the moment.