Mountain-size 'planet killer' asteroid will make a close approach to Earth this week — and you can watch it live - Livescience.com

On June 27, the mountain-size asteroid 2011 UL21 will come within 5 million miles of Earth, making it one of the largest space rocks to come that close to our planet for 125 years. Here's how to watch the close encounter live, or see it with a telescope.Ads Links by Easy Branches
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