Benchmark survey shows that giant outer extrasolar planets are rare

Astronomers who used powerful telescopes in Arizona and Chile in a survey for planets around nearby stars have discovered that extrasolar planets more massive than Jupiter are extremely rare in other outer solar systems.

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<p><a href="http://www.physorg.com/news103382183.html">Benchmark survey shows that giant outer extrasolar planets are rare</a></p> <p>Astronomers who used powerful telescopes in Arizona and Chile in a survey for planets around nearby stars have discovered that extrasolar planets more massive than Jupiter are extremely rare in other outer solar systems.</p>