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Astronomers discover an active galaxy in the early universe, and NASA names the Mars 2020 Rover with an essay contest. Note: The show will be taking a week off next week.
By Dr. Pamela Gay, Erik Madaus, Ally Pelphrey4.3
8787 ratings
Astronomers discover an active galaxy in the early universe, and NASA names the Mars 2020 Rover with an essay contest. Note: The show will be taking a week off next week.

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