A conceptual diagram of this research (IMAGE) National Institutes of Natural Sciences Caption A conceptual diagram of this research. Signals from supernovae (bottom right inset), quasars (middle left inset), and gamma-ray bursts (top center inset) reach Earth in the Milky Way Galaxy (background), where we can use them to measure cosmological parameters. Credit NAOJ 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.