They've discovered Earth ... again. The astronomy blogosphere is abuzz with news of "shrunken versions of our solar system" and "miniature worlds in the making," at least according to the press releases I've been reading. Nobody has called them " Hobbit solar systems"...

The discovery and optical imaging of Fomalhaut b , a planet orbiting the nearby star Fomalhaut, has wider implications for exoplanet science. I talked to NASA scientist Marc Kuchner about it. Kuchner works in the Exoplanets and Stellar Astrophysics Laboratory at Goddard Space Flight Center in Greenbelt...