Galaxies | Page 6 of 63 | Astronomy.com

Much of the mass in the El Gordo galaxy cluster is actually dark matter, shown here artificially colorized in blue. Scientists determined the location and concentration of the cluster’s dark matter by observing how its mass distorted the light from distant galaxies behind the cluster. Credit: NASA, ESA, and J. Jee (University of California, Davis).

Cosmology, Science

Ask Astro: If dark matter is invisible, then how do we detect it?

Thor's helmet.

Astrophotography, Deep-Sky Objects

101 Weirdest Cosmic Objects

UGC 12914 and UGC 12915

NGC 520

Exotic Objects, Science

3C 273

Galaxies, Science

NGC 3190 galaxy group

Galaxies, Science

The Hercules galaxy cluster

Galaxies, Science

Wild’s Triplet

Galaxies, Science

Copeland’s Septet

Galaxies, Science

Zwicky’s Necklace

Galaxies, Science

NGC 404

Galaxies, Science

Leo 1