This artist’s impression by the European Organisation for Astronomical Research in the Southern Hemisphere (ESO) website shows a trio of super-Earths discovered by an European team. 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.(Xinhua/AFP File Photo)

Astronomers Michel Mayor (R) and Stephane Udry (L) of Switzerland’s Geneva Observatory attend an astronomy conference in Nantes, western France, Monday June 16, 2008. European astronomers had located dozens of giant planets in three distant solar systems.European scientists on Monday said they had discovered a batch of five "super-Earths," each of them between four and 30 times bigger than our planet, in a trio of distant solar systems. (Xinhua/AFP Photo)