http://www.universetoday.com/2007/06/12/journey-to-the-centre-of-the-earths-position-in-space/ Space and astronomy news Sat, 21 Nov 2009 21:17:24 -0600 http://wordpress.org/?v=2.8.6 hourly 1 http://www.universetoday.com/2007/06/12/journey-to-the-centre-of-the-earths-position-in-space/comment-page-1/#comment-45330 Luitzen de Graaf Mon, 08 Dec 2008 21:00:21 +0000 http://www.universetoday.com/2007/06/12/journey-to-the-centre-of-the-earths-position-in-space/#comment-45330 Interesing stuff.. Interesing stuff..

]]> http://www.universetoday.com/2007/06/12/journey-to-the-centre-of-the-earths-position-in-space/comment-page-1/#comment-12329 Gareth Gilbert Thu, 14 Feb 2008 12:25:32 +0000 http://www.universetoday.com/2007/06/12/journey-to-the-centre-of-the-earths-position-in-space/#comment-12329 Is it really possible to locate the Earth's centre of mass to that degree of accuracy? Surely the measurements made can only locate the geometrical centre as the Earth's exterior dimensions can be measured reasonable accurately by satellite, but the Earth's interior is in a state of flux. Doesn't the present method used assume a uniform density (which of course is wrong)? Please explain. Is it really possible to locate the Earth's centre of mass to that degree of accuracy? Surely the measurements made can only locate the geometrical centre as the Earth's exterior dimensions can be measured reasonable accurately by satellite, but the Earth's interior is in a state of flux. Doesn't the present method used assume a uniform density (which of course is wrong)? Please explain.

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