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.../node9.html |date=2010-07-13 }} Today, automated astronomical observations from satellites and spacecraft require relativistic corrections of the reported ...31]]) is two million [[light-year]]s away. Thus we are viewing M31's light from two million years ago,<ref>Fred Adams and Greg Laughlin (1999), ''Five Ages ...

...9/|date=20 April 2016}}. Department of Physics, [[Washington University in St. Louis]]. Retrieved 17 December 2014.</ref> He also introduced the notion o ...century.<ref name="SA" /> His paternal great-grandmother saved the family from financial ruin by opening a school in their home.<ref name="SA" /> Despite ...