NOVA

Ancient Earth: Birth of the Sky

Animation and science experts reveal how the blue sky came to be. (60 minutes)

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UPCOMING EPISODES

Sun, 7/19 at 5:00 pm on Austin PBS HDTV

Astrophysicist Janna Levin explores black hole science. (60 minutes)

Tue, 7/21 at 6:00 pm on Austin PBS WORLD

Astrophysicist Janna Levin explores black hole science. (60 minutes)

Tue, 7/21 at 11:00 pm on Austin PBS WORLD

Astrophysicist Janna Levin explores black hole science. (60 minutes)

Wed, 7/22 at 7:00 am on Austin PBS WORLD

Astrophysicist Janna Levin explores black hole science. (60 minutes)

Wed, 7/22 at 8:00 pm on Austin PBS HDTV

NASA's New Horizons probe captures the first-ever detailed images of the icy world of Pluto. (60 minutes)

Thu, 7/23 at 1:00 am on Austin PBS HDTV

NASA's New Horizons probe captures the first-ever detailed images of the icy world of Pluto. (60 minutes)

Sun, 7/26 at 3:00 am on Austin PBS HDTV

NASA's New Horizons probe captures the first-ever detailed images of the icy world of Pluto. (60 minutes)