Earth-Venus smash-up possible in 3.5 billion years: study

A force known as orbital chaos may cause our Solar System to go haywire, leading to possible collision between Earth and Venus or Mars, according to a study released Wednesday.

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<p><a href="http://www.physorg.com/news163863400.html">Earth-Venus smash-up possible in 3.5 billion years: study</a></p> <p>A force known as orbital chaos may cause our Solar System to go haywire, leading to possible collision between Earth and Venus or Mars, according to a study released Wednesday.</p>