"European scientists on Monday said they had located five 'super-Earths', each of them between four and 30 times bigger than our planet, in a trio of distant solar systems.
The discovery suggests that at least one third of stars similar to our own Sun host these difficult-to-detect celestial bodies, multiplying previous estimates by five."
Details: http://news.yahoo.com/s/afp/20080616/sc_afp/spaceastronomyexoplanets