Researchers detect possible signal from dark matter Scientists have picked up an atypical photon emission in X-rays coming from space, and say it could be evidence for the existence of a particle of dark matter. If confirmed, it could open up new perspectives in cosmology. When physicists study the dynamics of galaxies and the movement of stars, they are confronted with a mystery. If they only take visible matter into account, their equations simply dont add up: the elements that can be observed are not sufficient to explain the rotation of objects and the existing gravitational forces. There is something missing. From this they deduced that there must be an invisible kind of matter that does not interact with light, but does, as a whole, interact by means of the gravitational force. Called dark matter, this substance appears to make up at least 80% of the Universe.
Posted on: Sat, 13 Dec 2014 08:03:56 +0000
Trending Topics
Recently Viewed Topics
© 2015