Distant galaxy mirrors the early Milky Way

A galaxy has been discovered that mirrors the very early version of our home galaxy, the Milky Way. The galaxy, dubbed the "Sparkler," is embedded in a system of globular clusters and satellite galaxies, and appears to be ...

Untangling a knot of galaxy clusters

Astronomers have captured a spectacular, ongoing collision between at least three galaxy clusters. Data from NASA's Chandra X-ray Observatory, ESA's (European Space Agency's) XMM-Newton, and a trio of radio telescopes is ...

Using the shadows of clusters to measure the universe

Astronomers have begun using a sophisticated suite of simulations, an advanced machine learning model of the formation of galaxy clusters, and an exotic relationship between galaxies to understand the origins of dark matter ...

Astronomers begin to understand strange 'backsplash' galaxies

Clusters of galaxies do not appear in an instant. Instead they gradually form through the accumulation of many galaxies. But when galaxies fall in they don't just stop moving. Instead, they keep moving around. These are called ...

page 11 from 40