'Echo Mapping' in Faraway Galaxies Could Measure Vast Cosmic Distances
- Thu 01 Oct 2020 07:10:PM
Matter swirling around supermassive black holes creates bursts of light that "echo" in nearby dust clouds. These traveling signals could serve as a new cosmic yardstick.
Source: 'Echo Mapping' in Faraway Galaxies Could Measure Vast Cosmic Distances