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Planetary Nebula: A New Twist

Planetary Nebula: A New Twist

Running time: 3 min 20 sec

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Planetary nebulae form when dying stars cast off their outer layers of gas. Astronomers combined observations from many telescopes to envision a three-dimensional form for the Helix Nebula, the planetary nebula closest to Earth. See the new shape in this short broadcast, called a HubbleMinute.