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observing feature
This Week's Sky at a GlanceWe're coming into the peak week for the trio conjunction of Venus, Jupiter, and Mercury low in twilight. On the opposite side of the sky, Corvus eyes two prizes, not just one. > read more
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top story
 Clarity Sought on a Crucial Variable Star
SS Cygni, one of the most-watched variable stars, lies at a distance that’s hotly disputed. The truth will determine whether we understand how these types of variables work. > read more
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equipment info
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Photo Gallery
 Photo Gallery
See the latest amateur astrophotos from visitors to our online photo gallery. > read more
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