Scientists are using this 3D Cielo supercmputer simulation to address ways to prevent objects in space from colliding with Earth.

This still image shows a one-megaton nuclear energy source exploding on the surface of the Itokawa asteroid.

Video explanation:  <a href="http://www.youtube.com/watch?v=hOcNbAV6SiI&amp;list=UUbWmiA_pHk9DE62BaSUFFRw&amp;index=3&amp;feature=plcp" rel="nofollow">www.youtube.com/watch?v=hOcNbAV6SiI&amp;list=UUbWmiA_pHk9...</a>

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