ShareCheck out this article: http://www.eurekalert.org/pub_releases/2006-09/uoca-epm090506.php.
Here’s a snippet from it :
More than one-third of the giant planet systems recently detected outside Earth’s solar system may harbor Earth-like planets, many covered in deep oceans with potential for life, according to a new study led by the University of Colorado at Boulder and Pennsylvania State University.
Of course such studies are based on computer models, which are (ironically) notoriously subject to human error. But if it were true, it certainly makes it more likely that there is life similar to Earth life elsewhere.
