Tip of the Red Giant Branch (image) Carnegie Institution for Science Share Print E-Mail Caption An impressionistic visualization of what's called the 'Tip of the Red Giant Branch,' when diagramming the distribution of stars' brightness versus their color. Credit Image is provided courtesy of Meredith Durbin. Usage Restrictions With credit 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.