<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://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/262f7c9f-8600-4c76-9bd6-eeae87433cda/4624D4C5-E7EB-4857-B015-BDE8003414BB/" 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://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600" href="http://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600" style="font-size: 11px;">en.wikipedia.org</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600"><B>Sirius</B> is the <A title="List of brightest stars" href="http://en.wikipedia.org/wiki/List_of_brightest_stars">brightest star</A> in the night sky</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://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600">almost twice as bright as <A title="Canopus" href="http://en.wikipedia.org/wiki/Canopus">Canopus</A>, the next brightest <A title="Star" href="http://en.wikipedia.org/wiki/Star">star</A>.</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://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600">derived from the <A title="Ancient Greek" href="http://en.wikipedia.org/wiki/Ancient_Greek">Ancient Greek</A> Σείριος.<SUP class="reference" id="cite_ref-Liddell_15-0"><A title="" href="#cite_note-Liddell-15"><SPAN>[</SPAN>16<SPAN>]</SPAN></A></SUP></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://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600">What the naked eye perceives as a single star is actually a <A title="Binary star" href="http://en.wikipedia.org/wiki/Binary_star">binary star</A> system</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://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600">Sirius appears bright due to both its intrinsic <A title="Luminosity" href="http://en.wikipedia.org/wiki/Luminosity">luminosity</A> and its closeness to the <A title="Earth" href="http://en.wikipedia.org/wiki/Earth">Earth</A>. At a distance of 2.6 <A title="Parsec" href="http://en.wikipedia.org/wiki/Parsec">parsecs</A> (8.6 <A title="Light-year" href="http://en.wikipedia.org/wiki/Light-year">light-years</A>), the Sirius system is one of our <A title="List of nearest stars" href="http://en.wikipedia.org/wiki/List_of_nearest_stars">near neighbors</A>. </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://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600">Sirius A is about twice as massive as the <A title="Sun" href="http://en.wikipedia.org/wiki/Sun">Sun</A></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://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600"> It is 25 times more luminous than the Sun<SUP class="reference" id="cite_ref-apj_630_6-6"><A title="" href="#cite_note-apj_630-6"><SPAN>[</SPAN>7<SPAN>]</SPAN></A></SUP> but has a significantly lower luminosity than other bright stars such as <A title="Canopus" href="http://en.wikipedia.org/wiki/Canopus">Canopus</A> or <A title="Rigel" href="http://en.wikipedia.org/wiki/Rigel">Rigel</A>. The system is between 200 and 300 million years old.<SUP class="reference" id="cite_ref-apj_630_6-7"><A title="" href="#cite_note-apj_630-6"><SPAN></SPAN></A></SUP></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://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600">also known colloquially as the "<B>Dog Star</B>", reflecting its prominence in its <A title="Constellation" href="http://en.wikipedia.org/wiki/Constellation">constellation</A>, <A title="Canis Major" href="http://en.wikipedia.org/wiki/Canis_Major">Canis Major</A> (<A title="English language" href="http://en.wikipedia.org/wiki/English_language">English</A>: <SPAN lang="en" xml:lang="en"><I>Big Dog</I></SPAN>).</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://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600">the subject of more myth and folklore than any other star apart from the sun.<SUP class="noprint Template-Fact"><SPAN title="This claim needs references to reliable sources since January 2009"></SPAN></SUP></blockquote><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://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://content6.clipmarks.com/images/clip-icon.gif" 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://en.wikipedia.org/wiki/File:Celestia_Sirius.jpg" href="http://en.wikipedia.org/wiki/File:Celestia_Sirius.jpg" style="font-size: 11px;">en.wikipedia.org</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://en.wikipedia.org/wiki/File:Celestia_Sirius.jpg"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/en.wikipedia.org/img/5E4B7A9D-611B-42D9-B466-08D8A3A84CD9" alt="File:Celestia Sirius.jpg" /></div></blockquote><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://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://content8.clipmarks.com/images/clip-icon.gif" 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://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600" href="http://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600" style="font-size: 11px;">en.wikipedia.org</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600">The <A title="Dogon people" href="http://en.wikipedia.org/wiki/Dogon_people">Dogon</A></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://en.wikipedia.org/w/index.php?title=Sirius&oldid=279236600"> have traditional astronomical knowledge about Sirius that would normally be considered impossible without the use of telescopes</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/4624D4C5-E7EB-4857-B015-BDE8003414BB/blog/" title="blog or email this clip"><img src="http://content9.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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