As technology and techniques in the hunt for terrestrial planets improves, we are finding that terrestrial planets seem to exist in a wide variety of star system types. In a presentation to the American Astronomical Society in St. Louis, MI on June 2, a team of astronomers stated that they used the Microlensing Observations in Astrophysics II telescope (New Zealand) to find a planet around a brown dwarf star. The planet is estimated as being about three times the mass of Earth.
The particular world discovered by the scientific team orbits a start about 300 light-years from our Solar System. It's orbit is likely as large as that of Venus around our Sun. According to current estimates, it most likely is made up ice and rock.
As more worlds are found, it seems to me that human understanding must accept that there is a very high likelihood that life exists beyond of Earth. There may come a day in our life times when such existence of life becomes completely undeniable.
Source: Astronomy Sept 2008 - Another super-Earth discovered