
Galaxy SDSS J0946+1006 acts as a gravitational lens, serving to astronomers see the indicators of darkish matter
NASA/ESA/R. Gavazzi, T. Treu/College of California/SLACS
An unusually dense galaxy may very well be the primary clear proof for the existence of an unconventional type of “sticky” darkish matter, altering our understanding of this mysterious cosmic substance.
In the usual image of cosmology, so-called chilly darkish matter solely interacts with the remainder of the universe via gravity, which causes it to bunch collectively in invisible, puffy clouds round galaxies. We are able to map these clouds not directly by measuring the gravitational pull they exert, which bends…