I remember reading a book about this in the '70s. The object changed course to avoid a populated area. When it exploded, it left a radioactive footprint. The Russian scientists treated it as a anamoly. It is one of this planet's great mysteries.
Larry
Take a look at post #31
"The explosion was so massive that it caused damage 400 miles away, and was heard even further."
The Bush administration is behind this event. Newly released data by the Freedom of Information Act shows that Government scientists have built a time machine.
Bush used it to hit the Russians with secret WMD in 1908 and effect their time line in our favor and to destroy the environment by killing a whole bunch of trees. Bush hates trees.