Scientists have discovered dark matter at the edge of the universe


06/07/2012

Professor of Astrophysics, Karl Gebhardt of the University of Texas conducted an experiment to study dark matter (HETDEX), during which discovered many interesting things about the mysterious substance, is a significant part of the universe.

Dark matter can not be seen through a microscope, because it does not absorb or give off any light or electromagnetic radiation. However, it has a gravitational influence on matter in the galaxy. These indirect data allowed us to calculate that the proportion of dark matter in the universe of matter is 83%, and in the mass-energy - 23%. It’s a big part of the universe, so scientists have long been trying to figure out what this mysterious substance.

According to Gebhardt, dark matter - a new type of particle, not yet discovered by scientists. At this point many of the experiments. To determine where the dark matter, scientists collect information about the movement of the stars. Then, by means of computer modeling of the data they are studying the effect on the substance dark matter in the galaxy. Gebhardt and a group of scientists from various scientific institutions in their research using Hubble telescope and spectrograph on the telescope at the McDonald Observatory. On the basis of the data Gebhardt creates computer models and maps of the distribution of this dark substance in different galaxies. For a long time between theoretical models and the characteristics of the distribution of dark matter in space and observations of the universe a discrepancy.

Gerbhardt reports that they are working on a final, accurate maps of the distribution of dark matter. They’ve managed to find out what it is on the edge of the galaxy and more distributed than they previously thought. This means that the model for the analysis of the dark matter must include a huge number of elements. Scientists can see hundreds of billions of different galaxies, each of which has about a dozen of billions of stars. To unravel the mystery of dark matter, scientists will have to learn a huge number of objects.

Just three years into the project HETDEX astrophysics will collect information of a million galaxies, thereby establishing the largest in the history of astronomy map of the universe. During this time a total of HETDEX get a million gigabytes of data.

According to the materials Sciencemagis.ru


ALMA telescope in the constellation of the Wolf recorded the birth of stars and planets
Curiosity continues to puzzle scientists
"Kepler" discovered twin solar system
Japan plans to use a giant fishing net to catch debris
The opposite of black holes can be seen in your kitchen sink