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The First Planetary Nebula Spectrum

Celebrate the anniversary of a revolutionary discovery by gathering with other astronomers to observe planetary nebulae in August's evening sky.
August 29, 2014 will mark the 150th anniversary of Sir William Huggins’s first observation of the spectrum of a planetary nebula. He was the first to split apart the light coming from these stellar death shrouds, using a newfangled instrument he called a star-spectroscope.

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