Artist's Conception of Brown Dwarf (image) Harvard-Smithsonian Center for Astrophysics Caption This artist's conception portrays a free-floating brown dwarf, or failed star. A new study shows that several of these objects are warmer than previously thought with temperatures about 250-350 degrees Fahrenheit. Credit NASA/JPL-Caltech Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.