A ‘Dark Galaxy’ Almost as Old as Universe Itself

Mrk 1216 Galaxy


Isolated for billions of years, a galaxy known as Markarian 1216 (abbreviated as Mrk 1216) with more dark matter packed into its core than expected has been identified by astronomers using data from NASA’s Chandra X-ray Observatory. Mrk 1216 an elliptically shaped galaxies densely packed with stars at its centers descended from reddish, compact galaxies called “red nuggets” that formed about a billion years after the big bang, but then stalled in their growth about 10 billion years ago.