Ask Tony and Tucker - Sky Guy Greg Redfern on Comet ISON

Ask Tony and Tucker - Sky Guy Greg Redfern on Comet ISON

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  • Ask Tony and Tucker

    Ask Tony and Tucker

    From the archives!  Take a look back at your favorite 'Ask Tony & Tucker' segments.  They never get old!
    From the archives!  Take a look back at your favorite 'Ask Tony & Tucker' segments.  They never get old!
The Comet ISON is due to make its closest approach to earth next month and a recent near-visitor to earth may be coming back in about 20 years. Sky Guy Greg Redfern, who is also NASA ambassador and an adjunct professor of astronomy at George Mason University, joined us.
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