Skywatch

  • April 26, 2007

    Episode 95: Creating Planetary Nebulae

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    Planetary nebulae form when a Sun-sized star dies, ejecting clouds of gas and dust into space. In fact, when our Sun ends its life, it will be as a planetary nebula. Scientists are trying to discover how such dying stars form the complex, colorful structures of nebulae. If they can discover how the process works, it will help explain how the elements in stars find their way into space, and then into new star systems and planets.