For a planet, this would be like a day at the spa. After years of growing old, a massive planet could, in theory, brighten up with a radiant, youthful glow. Rejuvenated planets, as they are nicknamed, are only hypothetical. But new research from NASA's Spitzer Space Telescope has identified one such candidate, seemingly looking billions of years younger than its actual age.
For more information on Spitzer, visit: http://spitzer.caltech.edu - http://www.nasa.gov/spitzer
Jet Propulsion Laboratory, Pasadena, California