New Universe Map Reveals 300000 Unknown Galaxies

first_img Watch: Dolphin Leaps Feet Away From Unsuspecting SurferNASA Says 2 Asteroids Will Safely Fly By Earth This Weekend Stay on target Our map of the universe is expanding: A group of international astronomers just discovered 300,000 unknown galaxies in space.On Tuesday, more than 200 astronomers from 18 countries published the first phase of a new radio sky survey using the Low Frequency Array (LOFAR) telescope, the Netherlands Institute for Radio Astronomy (ASTRON) said in a press release. The team, which shared their findings in the journal Astronomy & Astrophysics, said this discovery might help astronomers learn more about the physics of black holes and how clusters of galaxies evolve.Radio astronomy unveils universe processes that humans can’t see with optical instruments. For this astronomy research, the LOFAR telescope observed 25 percent of the northern hemisphere at low radio frequencies. Roughly 10 percent of this data is public, and it maps 300,000 undetected light sources that are thought to be distant galaxies in the universe, AFP reported.Using the LOFAR telescope in the Netherlands, the team detected “jets” of ancient radiation created when galaxies merge together. These traces, which were previously unknown to astronomers, can produce radio emission that spans millions of light-years. Following these observations, the team used a high throughput compute cluster (Grid) and data collected from the LOFAR telescope to create a high-quality map image.“With radio observations we can detect radiation from the tenuous medium that exists between galaxies. This radiation is generated by energetic shocks and turbulence,” Amanda Wilber, a Ph.D. staff member at the University of Hamburg (Germany), said in the press release. “LOFAR allows us to detect many more of these sources and understand what is powering them.”LOFAR can also help astronomers study black hole activity: The team’s 26 research papers only covered the first two percent of the LOFAR telescope sky survey, however, the team has greater ambitions: Eventually, it would like to develop high-resolution pictures of the entire northern sky, which could disclose 15 million radio sources.“If we take a radio telescope and we look up at the sky, we see mainly emission from the immediate environment of massive black holes,” Huub Röttgering, a professor from Leiden University in The Netherlands, said in the press release. “With LOFAR, we hope to answer the fascinating question: Where do those black holes come from?”To learn more about the LOFAR telescope survey, you can watch this ASTRON YouTube video, which gives a quick tour of four galaxies and how to tell the difference between detecting optical and radio waves.More on Geek.com:Crew Simulations Expose Weak Spots in NASA Mars MissionNASA Captures Image of Bright Blue Objects in SpaceWatch: Satellite’s Harpoon Successfully Spears Space Junklast_img