This is a follow-up to our posting on 24 Feb 2013 about meteors & moldavite. I ran across a very interesting NOVA episode about it where a couple of scientists gathered all the video that was shot of the object (think about all those cell phones and dash cams), analyzed it, and managed to estimate the size and where it originated from. It came at us from the Sun side, so we literally never saw it coming.
According to NASA, the Siberian meteor exploded with the power of 30 Hiroshima bombs and was the larges object to burst in the atmosphere since the Tunguska event of 1908, also in Sibera.
Here's the link to view the episode online at PBS. http://www.pbs.org/wgbh/nova/earth/meteor-strike.html
Enjoy!
