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Visitors from Space

Visitors from Space

[DVD]
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DVD 
List Price: $44.95
Price: $37.31
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Product Notes

Comets have been causing fear in the minds of humans for millennia. Now spacecraft are helping US to understand what they are made of and how they behave. The time it takes for a comet to make one complete orbit around another object is known as the orbital period. The range of a comet's orbital period may be from a few years to hundreds of thousands of years. Short-period comets originate in the Kuiper belt, or it's associated scattered disc, which lie beyond the orbit of Neptune. Longer period comets are thought to originate in the Oort Cloud, a spherical cloud of icy bodies in the outer Solar System. Comets allow US to study what the solar system was like in it's formative period. This program will help students understand why comets cause both fear and fascination.

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    Details

    Title: Visitors from Space
    Genre: Special Interest-Space
    Release Date: 2/7/2012
    Product Type: DVD
    Catalog #: K4561
    UPC: 709629045613
    Item #: 190176X
    This product is a special order

    Technical Information

    Street Date: 2/7/2012
    Run Time: 10 minutes
    Studio: TMW Media Group