Astronomers based out of Hatfield, England, have discovered two planets that have conditions close to that of our own life-supporting Earth. One planet, Gliese 581 e, is of the right size, meanwhile Gliese 581 d is in a "habitable" zone.
Gliese 581 e is only 1.9 times the size of Earth, while other planets discovered outside our solar system were all that of Jupiter's size. Gliese 581 d has an orbit around a sun-like star that could allow liquid to form on the planet.
Finding rocky Earth-like planets is proof that scientists are getting better, and closer, to finding life-bearing bodies. Of the nearly 350 exoplanets (planets outside our solar system) found to date, nearly all have been found to be uninhabitable.