How did a “Halloween Asteroid” sneak up on Earth?

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A view of Earth taken by NASA astronaut Gregory Reid Wiseman of the US from the International Space Station (ISS) on space, September 02, 2014. (Gregory Reid Wiseman / NASA)

On Halloween, an asteroid a little over 4 football fields long will come within 1.3 times the distance of the Moon to Earth.  Dr. Lance Benner, Ph.D. is Research Scientist at NASA’s Jet Propulsion Laboratory has an asteroid named after him, he joins Roe Conn and Anna Davlantes to explain just how a rock this big could go unnoticed by NASA.

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