A blue planet.

If viewed from space our planet would look like a blue dot = water = like.
So this is the search of Science - to find a blue planet.
Well they have found one:

http://www.theepochtimes.com/n3/170747-photos-newly-discovered-true-blue-planet/

Never mind, sooner or later, we will find the first of many - like earth. Once we do we will closer to the possibility that in this vast universe - WE ARE NOT ALONE!