Outer Solar System Not as Crowded as Astronomers Thought

(PhysOrg.com) -- When a treasure hunt comes up empty-handed, the hunters are understandably disappointed. But when astronomers don't find what they are looking for, the defeat can provide as much information as a successful search.

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<p><a href="http://www.physorg.com/news142255038.html">Outer Solar System Not as Crowded as Astronomers Thought</a></p> <p>(PhysOrg.com) -- When a treasure hunt comes up empty-handed, the hunters are understandably disappointed. But when astronomers don't find what they are looking for, the defeat can provide as much information as a successful search.</p>