Shiva Hypothesis- By the way, the most intense time period for this coincides with the convergence in 2012 when we cross the center of galactic plane... <img src=http://ras.ucalgary.ca/CGPS/where/opt/opt_mw_full.gif> ; ) <img src=http://ras.ucalgary.ca/CGPS/where/opt/dss_ngc891_crop.gif> <A HREF="http://users.tpg.com.au/users/tps-seti/crater.html" target="_blank">http://users.tpg.com.au/users/tps-seti/crater.html</A> <img src=http://ras.ucalgary.ca/CGPS/where/opt/xephem_sky.gif>