Supposedly astronomers have discovered the most Earth-like planet to date. It's also in the habitable zone, meaning that there may be liquid water on the planet.
http://www.astronomy.com/asy/default.aspx?c=a&id=5471
Very interesting stuff. Especially with the likelihood of there being liquid water, which would be essential for life.
Too bad it's ~20 light years away and we don't yet have the technology to explore so far away within a reasonable time.
Maybe the world needs better research equipment so we can see what ET is up to...
