【實用個人化app】Year of the Comet - An Astronomy Now Guide|最夯免費app

This interactive guide from Astronomy Now will tell you how to see Comet ISON and learn more about comets in general.

Find out how the European Space Agency plans to land a space probe on a comet in 2014.

Explore a timeline of recent comets that have graced our skies.

It's been almost 20 years since a comet crashed into Jupiter. Relive the Comet Shoemaker-Levy 9 collision.

Plus get updates on Comet ISON from the Astronomy Now team.

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