Why the Earth is Moving Away From the Sun


	Why the Earth is Moving Away From the Sun
celestialdancer
6-2-2009 8:50 AM
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tags:
sun, moon, earth
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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/045489a4-078a-4249-baec-bc7a0eb926dd/92928FA8-5E8C-4D4C-9609-20847F4A6F1C/" 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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space" href="http://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space" style="font-size: 11px;">www.newscientist.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">Skywatchers have been trying to gauge the <A href="http://www.newscientist.com/topic/solar-system" alt="sun" omd="zodJump('http://widgets.zibb.com/images/_jump.gif?tag=InfusionJS&url=http:%2F%2Fwww.newscientist.com%2Ftopic%2Fsolar-system&gsid=sun&entitytypeid=kw&lid=http://www.newscientist.com/topic/solar-system&title=sun&intref=infusion&variantName=sun&zodid=96')" class="infusionLink" linkindex="33">sun</A>-Earth distance for thousands of years</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">Takaho Miura of Hirosaki University in Japan and three colleagues</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">argue that the sun and Earth are literally pushing each other away due to their tidal interaction.</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/www.newscientist.com/img/3867B92C-CBF8-4CE7-A718-F3844C553934" alt="The sun and Earth are moving apart by about 15 cm per year - the culprit may be tides raised on the sun by our home planet (Image: NASA)" /></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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">The current value stands at 149,597,870.696 kilometres.</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">Russian dynamicists Gregoriy A. Krasinsky and Victor A. Brumberg to calculate</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space"> that the sun and Earth are gradually moving apart.</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">just 15 cm per year</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">something must really be pushing Earth outward. But what?</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">Other possible explanations</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">a change in the gravitational constant <A href="http://www.newscientist.com/article/dn10886-quantum-technique-could-pin-down-gravitational-constant.html" linkindex="37"><I>G</I></A>, the effects of cosmic expansion, and even the influence of dark matter.</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">It's the same process that's gradually driving the moon's orbit outward:</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">the moon's orbit expands by about 4 cm and Earth's rotation slows by 0.000017 second.</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">the distance between the Earth and sun is growing because the sun is losing its angular momentum.</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">the Sun is losing enough mass,</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://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html?DCMP=OTC-rss&nsref=space">to gradually be losing its gravitational grip</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/92928FA8-5E8C-4D4C-9609-20847F4A6F1C/blog/" title="blog or email this clip"><img src="http://content8.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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