Compares the Colors of Planets in Our Solar System to Exoplanet HD 189733B (image) NASA/Goddard Space Flight Center Share Print E-Mail Caption This plot compares the colors of planets in our solar system to exoplanet HD 189733b. The exoplanet's deep blue color is produced by silicate droplets, which scatter blue light in its atmosphere. Credit NASA, ESA, and A. Feild (STScI) Usage Restrictions None Share Print E-Mail 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.