Comment This is how Earth 2.0 will be found. (Score 1) 174
http://kepler.nasa.gov/
After Kepler launches we will know about an additional 1-2k planets. 4-6 years after it launches we should know about at least one Earth 2.0.
After the last of 16 mounting screws has been removed from an access cover, it will be discovered that the wrong access cover has been removed.