What Causes Meteor Showers?


	What Causes Meteor Showers?

amgumen

7-26-2008 1:44 AM

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7-26-2008 1:46 AM

amgumen

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/7beef21a-aed2-416d-9fc1-2813f795d89f/146DB45A-E897-4C46-B0EC-1182C6AD04E1/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://geology.com/articles/meteor-shower.shtml" href="http://geology.com/articles/meteor-shower.shtml" style="font-size: 11px;">geology.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://geology.com/articles/meteor-shower.shtml"><div align="center"><img src="http://content9.clipmarks.com/blog_cache/geology.com/img/A0F83CA6-1AB7-4292-84CD-5DF44DC97016" alt="" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://geology.com/articles/meteor-shower.shtml"><table background="undefined" bgcolor="#eeeeee"><tr><TD>Figure 1: A composite image  of meteors from the Geminid meteor shower of 2007 
produced by astronomer Erno Berkó. Over 
four nights, he captured 123 meteors in 113 photographs, then composited them into 
this  single spectacular image. This  image  clearly shows that the 
meteors are  streaming from a point (know as a "radiant")  near the  constellation Gemini. Image 
copyright by <A href="http://geology.com/articles/mailto:berko at is dot hu">Erno Berkó</A>.</TD></tr></table></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://geology.com/articles/meteor-shower.shtml"><H3>How Many Showers, How Many Meteors?</H3></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://geology.com/articles/meteor-shower.shtml"><H3>How Do Comets Produce Meteor Showers?</H3></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://geology.com/articles/meteor-shower.shtml"><H3>How to Observe a Meteor Shower</H3></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://geology.com/articles/meteor-shower.shtml"><table background="undefined" bgcolor=""><tr><TD width="375" bgcolor="#eeeeee" align="center"><IMG width="375" height="273" src="http://geology.com/articles/meteor-shower/through-the-dust-trail-4.jpg" />
Figure 5: Simplified diagram of Earth approaching a comet's dust trail. In this
diagram you are looking down onto the Earth's North Pole.  Note how the morning side 
of Earth will plow into the dust but the evening side will be somewhat shielded. 
This is why there are often more visible meteors after midnight - you are then 
on the side of the Earth that is  plowing into the dust.
</TD></tr></table></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/146DB45A-E897-4C46-B0EC-1182C6AD04E1/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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