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Variable Stars

The Top 12 Naked-Eye Variable Stars

Lurking in the seemingly changeless constellations are a few inconstant stars that pulse and eclipse. Here are a dozen variables that are easy to observe.

Citizen Science: Projects & Collaboration

Citizen Sky Wants You!

Backyard astronomers of all types and experience levels can participate in a real-world science project — and help solve a mystery involving the star Epsilon Aurigae that's puzzled astronomers since 1821.

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