Tag Archives: dark matter

Dark Matter Dwarf Galaxy Found Hidden in Spacetime Warp

There are few things that get us more excited than the mysteries of dark matter and the warping of spacetime, but when you have both wrapped into a stunning image of an Einstein ring, you know you’re onto something special.

In 2014, the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile observed a striking cosmic quirk during its Long Baseline Campaign. It saw a distant galaxy, warped beyond recognition, by the gravitational field of a massive galaxy in the foreground. This “Einstein ring” is so-called after Einstein’s theory of general relativity, which predicts spacetime can become bent by the presence of a powerful gravitational field. Continue reading Dark Matter Dwarf Galaxy Found Hidden in Spacetime Warp

Dark Matter Particle Could be Size of Human Cell

Dark matter could be made of particles that each weigh almost as much as a human cell and are nearly dense enough to become miniature black holes, new research suggests.

While dark matter is thought to make up five-sixths of all matter in the universe, scientists don’t know what this strange stuff is made of. True to its name, dark matter is invisible — it does not emit, reflect or even block light. As a result, dark matter can currently be studied only through its gravitational effects on normal matter. The nature of dark matter is currently one of the greatest mysteries in science. Continue reading Dark Matter Particle Could be Size of Human Cell

Dead galaxies protected by dark matter

  • ICRAR computer simulations consider dead galaxies
  • Galaxies in cluster held together by dark matter 
  • Cluster ‘quenches’ galaxy of hydrogen gas 

THE mysterious cosmic material dark matter has been credited with protecting dead galaxies in a cluster and preventing them from being ripped apart by the cluster’s enormous gravitational forces.
Continue reading Dead galaxies protected by dark matter