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Dark Matter is one of the mysterious phenomena in space. We know very little about it. So Dark matter is a theorized form of matter that is believed to account for approximately 80% of the mass of matter in the universe, and about a quarter of its total energy density. It is invisible to us and is almost impossible to see dark matter.
Scientists indicate that dark matter makes up 85 percent of the known universe because of its observable gravitational effects. And now owing to the new method astronomers from Australia and Spain have used the images captured by NASA/ESA’s Hubble Space Telescope that may let us see dark matter using very faint light found in galaxy clusters.
According to www.cnet.com “A galaxy cluster is a huge, gravitationally bound gathering of galaxies. For instance, our home galaxy, the Milky Way, exists within one known as the Laniakea supercluster with hundreds of thousands of other galaxies. Within a cluster, galaxies interact, and sometimes stars are ripped from their home galaxy and sent floating off freely through the cluster. As these intergalactic vagabonds travel freely through the cluster they emit a faint light known as “intracluster light.””
“We have found that very faint light in galaxy clusters, the intracluster light, maps how dark matter is distributed,” said Australia’s University of New South Wales Mireia Montes, lead author on the research (PDF) published in the Monthly Notices of the Royal Astronomical Society.
Astronomers used “gravitational lensing” to evaluate dark matter distribution in galaxy clusters. While lensing is powerful at revealing the structure of dark matter in clusters, it requires both intense observation and extensive time.
You may get acquainted with the topic of “Top 10 Dark Matter Facts that Is Worth Reading and Knowing” on our Website”.
Source: Text; www.cnet.com
Image credit; newscenter.lbl.gov
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