Keck Observatory

June 25, 2026

A faint dwarf galaxy drifting 45 million light-years from Earth may have joined one of astronomy’s strangest clubs.…

$The Champagne Cluster appears here as a large collection of brilliant white lights, each a distinct galaxy. A neon purple cloud stretches across the cluster’s crowded core. Many of the hundred-plus galaxies in the cluster are in two clumps of galaxies towards the top and bottom of center. Some are encircled by a faint glowing haze, while a few foreground stars gleam with diffraction spikes. Some of the smaller galaxies are tinted blue, orange, or red, and some appear more oblong than round, suggesting spiral shapes viewed edge-on. The neon purple cloud sits at the heart of the image, surrounding the most densely-packed part of the cluster. This cloud, which spreads vertically across the cluster, is multimillion-degree gas observed by Chandra. The two clumps of observable galaxies, and the spread of superheated gas, reveal that the Champagne Cluster is in fact two clusters in the process of colliding. Image credit: NASA / CXC / UCDavis / Bouhrik et al. / Legacy Survey / DECaLS / BASS / MzLS / SAO / P. Edmonds / L. Frattare.$

January 3, 2026

Astronomers discovered an enormous galaxy cluster called RM J130558.9+263048.4 on December 31, 2020; the date, combined with the…

Astronomers discover faint dwarf galaxy that seems to exist without dark matter

Champagne Cluster is Actually Two Galaxy Clusters in Process of Merging, Astronomers Find