Emerging Tech

Chandra X-ray telescope uncovers evidence of the universe’s missing matter

An illustration of the Millennium simulation, which uses supercomputers to formulate how the key components of the Universe would have evolved over cosmic time. Illustration: Springel et al. (2005); Spectrum: NASA/CXC/CfA/Kovács et al. There’s a puzzle that has been taxing astronomers for many years: Where is all of the matter in the universe? You might […]