A galaxy made of 99% dark matter, betraying its presence only by four tiny clusters of stars.
Sandeep K S
19 minutes ago
1 min read
Unveiling Galaxy CDG-2: This infographic details a "dark" galaxy where 99% of its mass is invisible dark matter. Stripped of star-forming gas and with a sparse stellar population, CDG-2 was detected using globular clusters as tracers. It is the first galaxy discovered solely via clusters, with its existence confirmed by data from Hubble, the Euclid space observatory, and the Subaru Telescope.
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In the shadows of a galaxy cluster, astronomers have found a phantom. A galaxy made of 99% dark matter, betraying its presence only by four tiny clusters of stars.
Most galaxies shine bright. But CDG-2 is a "Low-Surface-Brightness" galaxy, so faint it's nearly invisible. It contains only a sparse scattering of stars.
