Using NASA's Chandra X-ray Observatory, astronomers have obtained their most accurate determination to date of the amount of dark matter in galaxy clusters, the most massive objects in the universe. The results provide an important step towards a precise measurement of the total matter density of the universe...
Selected coverage:
- Astronomers Take the Measure of Dark Matter in the universe (Chandra press room)
- Studies Pins Down Quantity, Size of Dark Matter in Universe (SPACE.com)
- Orbiting Observatories Tally Dark Matter (Science, pdf)
- The Matter Of Galaxy Clusters (Astronomy Picture of the Day)
