Astronomers Spotted a Galaxy That's Made Up Almost Entirely of Dark Matter

Most Dark Matter Dominated Galaxy Ever? New Object CDG-2 Could Be 99.9 Percent Dark Matter

Tracing groups of stars tells the story of a massive but invisible object.

Astronomers Spotted a Galaxy That's Made Up Almost Entirely of Dark Matter

The researchers found the galaxy thanks to the Hubble Space Telescope

Hubble spots dark matter galaxy

New Delhi: Observations by the Hubble Space Telescope has been used to study an object designated as CDG-2, which may be among the most heavily dark matter-dominated galaxies ever discovered. These are a rare class of nearly invisible galaxies dominated by dark matter, containing only a sparse scattering of stars. Dark matter is an invisible form of matter that does not interact with light, but scientists know it must exist as without its gravit…

What is a ghost galaxy?

A nearly invisible galaxy reveals dark matter’s clout Astronomers using archival Hubble data have identified an unusually faint system whose visible stars make up only a tiny fraction of its total mass. The object has been described as a “ghost” or “dark” galaxy because it contains almost no…