Probing Question: Are Asteroids a Threat to Earth?

Hollywood thrillers such as Deep Impact helped to jump-start America's interest in knowing what our "deflection strategy" would be if a giant asteroid was on a potentially catastrophic collision course with Earth.

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<p><a href="http://www.physorg.com/news114104984.html">Probing Question: Are Asteroids a Threat to Earth?</a></p> <p>Hollywood thrillers such as Deep Impact helped to jump-start America's interest in knowing what our "deflection strategy" would be if a giant asteroid was on a potentially catastrophic collision course with Earth.</p>