Asteroids Help Scientists To Measure The Diameters Of Far Away Stars (image) Deutsches Elektronen-Synchrotron DESY Share Print E-Mail Caption When an asteroid passes in front of a star, the resulting diffraction pattern (here greatly exaggerated) can reveal the star's angular size. Credit DESY, Lucid Berlin Usage Restrictions Free use by the media if reporting on the related paper. 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.