NASA radar image of asteroid 2005 YU55, obtained on Nov. 7, 2011. It passed within 200,000 miles of Earth, which is closer than the Moon’s normal orbit. In stellar terms, that’s a near miss for sure! If it had hit, it would have made a crater four miles across, and 1,700 feet deep, or, a hit in the sea would have produced a 70 foot high tsunami. [Note: Mon père points out correctly that much of it would burn up in the atmosphere before impact, but still, potentially a big bang!]
Do we have a plan for the next one in case it’s not so ‘far’ away? Remember, watch the skies!!
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