Final_Mass_v_Radius_Giant_Exoplanets_TIC139_28Oct-web (IMAGE) SETI Institute Caption Figure 1. Comparing the mass, radius, and “year” length of this new planet (labeled with the arrow) to those of other known planets. It is an especially valuable discovery because there are few known planets with sizes and masses similar to this new one. Planets larger in radius (size) are towards the top and more massive planets (containing more matter) are towards the right. Those that orbit their stars more quickly are colored green and slower planets are blue. Solar system planets are in magenta for comparison, with Saturn being the most similar. Credit SETI Institute Usage Restrictions None License Original content 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.