http://www.nature.com/nature/journal/v442/n7101/abs/nature04933.html


This article talks about how Titan and Earth are the only places in our solar system where rain reaches the surface. On Titan, the rain is methane, the cycle of which is believed to be different than the water cycle that we have on Earth. There are also methane storms which happen on Titan.
 
http://www.space.com/20720-earth-like-alien-planets-discovery.html

This article is about a new planet which was discovered. This planet might be a replica of Earth, except a little bigger. The planet is called Kepler-62f and is approximately 1200 light
 
http://www.marshallcavendishdigital.com/articledisplayresult/33/7159/72571

This article is about exploration of the moon. It talks about how there is a possibility that ice is present, but the probe was not equipped to prove that there was ice. At the end, it states that astronomers think that there may be liquid water which could be found on the moon. If this is true,