Ha ha - "Goldilocks zone", "tiddlers". Must be astronomy slang.
I don\'t exactly understand why they\'re so busy looking for planets similar to Earth (other than the possible evacuation of our own planet). I guess that would be the logical approach, but the universe is billions of years old, meaning there could be civilizations billions of years more advanced than us. Why would they need water? Why would they need a climate between 0 and 120 degrees F? I personally don\'t think we\'re ready to be introducted to alien life forms. Too many organized religious types would be running around screaming about the apocalypse.