Its not that we haven’t been trying, but for all our effort… the best we have found lurking among the stars comparable to our home is a planet at about 5x Earth sizes. When you consider the advances and methods of detection, one can almost assume that Earth-like extra planet discoveries will be made from ground-based observations very soon. With this week’s successful Kepler launch, the assumption may be that (if they are out there) we might be talking about finding many Earth-like planets beyond our Solar System fairly soon. Hopefully, the job of finding extra-solar planets is about to get really interesting.
Click the image for a hi-res to see the banner on the side (or here). I like how home-made it seems, “Search for Earth Sized Planets”. Makes it almost seem like a boy-scouts rocket project.