Super Neptune Found

The search for smaller and smaller exoplanets is beginning to produce results. So far, most of the 300 exoplanets found have been huge worlds-- Jupiter-sized and larger. That's no doubt to be expected, but the worlds astronomers really want to find are the Earth-sized ones that may support life.

We are getting closer.

Recently, planet humters discovered a world in orbit around a star 120 light years away that is roughly five Neptune masses. That's still a big world, but it's the smallest exoplanet found to date.