Redrawn from English Wikipedia.<br><p>Caption: Comets have highly elliptical orbits. They have two distinct tails:
</p>
<ol><li>Ion tail</li>
<li>Dust tail</li></ol>
<a href="//commons.wikimedia.org/wiki/User:Fredrik" title="User:Fredrik">Fredrik</a>
<a href="//commons.wikimedia.org/wiki/File:Cometorbit.svg" title="File:Cometorbit.svg">Cometorbit.svg</a>