Check out Kaitlin Shinnick's appraisal of an Art Deco diamond & sapphire ring, ca. 1920, in Springs Preserve, Hour 3. Antiques Roadshow is available to stream on pbs.org and the free PBS App ...

Spokes are narrow markings across Saturn's B ring, most likely caused by a cloud of micrometer-sized particles intermittently lofted from the larger boulders in the ring. They were observed by the ...

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