NASA satellite image. Jupiter is a planet covered in storms. Thousands of kilometers across, these storms are larger than anything we see on Earth. | Still from "Nova" The Planets: Jupiter

The Planets: Jupiter

Jupiter's massive gravitational force made it a wrecking ball when it barreled through the early solar system. But it also shaped life on Earth, delivering comets laden with water - and perhaps even the fateful asteroid that wiped out the dinosaurs.

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The Planets: Ice Worlds

In the far reaches of the solar system, Uranus and Neptune dazzle with unexpected rings, supersonic winds and dozens of moons. And NASA's New Horizons gets a stunning up-close view of Pluto before venturing deep into the Kuiper Belt.

  • 2020-02-02T14:00:00-08:00
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  • 2020-02-02T17:00:00-08:00
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  • 2020-02-03T06:00:00-08:00
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Polar Extremes

Following a trail of fossils found in all the wrong places -- beech trees in Antarctica, redwoods and hippo-like mammals in the Arctic -- uncover the bizarre history of the poles, from miles-thick ice sheets to warm polar forests teeming with life.

  • 2020-02-09T14:00:00-08:00
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Dog Tales

Dogs have long been dependable companions by our sides. But it wasn't always that way-and a look at their closest living relative, the wolf, makes it clear why. Researchers reveal how humans tamed fearsome canines over tens of thousands of years, and how modern dog intelligence and behaviors have made them indispensable companions.

  • 2020-02-16T14:00:00-08:00
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  • 2020-02-16T17:00:00-08:00
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  • 2020-02-17T06:00:00-08:00
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Cat Tales

They may have stolen many hearts-and the internet-but cats can be perplexing pets. As much cuddly and playful as they are aloof and uncaring, they've often raised the question: Did humans ever really domesticate felines? And what more can science tell us about a relationship that predates history?

  • 2020-02-23T14:00:00-08:00
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  • 2020-02-23T18:00:00-08:00
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  • 2020-02-24T06:00:00-08:00
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