quote[One way to visualise this is to imagine a string coming up through this page. Imagine cutting from the paper a narrow triangle whose tip is at the string, then gluing the paper back together again. The result will be a shallow cone centred on the string. Because of this distortion of space, if a string passes between us and a distant galaxy - a giant collection of stars like our Milky Way - the light of the galaxy can come to Earth along two possible routes: one on either side of the string. Consequently, there will be two identical images of the galaxy only a whisker apart - which is exactly what is seen in the case of CSL-1.]
Mind boggling...
Thursday, March 03, 2005
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