Three Smallest Planets Yet Discovered

... outside our solar system.

Kepler has discoverd theree planets around the star KOI-961, and they are a mere 0.78, 0.73 and 0.57 times the radius of Earth, rocky like the earth, but alas, they are too close to the star so there can't be any liquid water on them. But still, there are hardly any rocky exoplanets known, and the small ones are hard to find.

And the possibility of life being on them is, well, just have a look:

Here's the NASA press release on this new finding.