Repellant dark matter confounds astronomers

In a result which has baffled astronomers at NASA’s Chandra X-ray Observatory, dark matter has been observed separating from galaxy clusters after a collision.

When galaxy clusters collide, astronomers expect the galaxies to be strongly bound to clouds of dark matter which act as gravitational ‘glue’. But in analysing the collision of galaxy clusters in the merging cluster Abell 520, a team of scientists found that the cluster’s core was rich in dark matter but contained no luminous galaxies. This seems to contradict earlier results.

Read more at University of California, Davis

Expert Database

Want to write?

Write an article and join a growing community of more than 54,600 academics and researchers from 2,118 institutions.

Register now