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An astonishing map of the night sky revealed hundreds of thousands of new galaxies, highlighting some of the greatest secrets of the universe. Some 300,000 previously unknown galaxies have been mapped with the help of a powerful telescope.
"This is a new window on the universe," Astronomer Cyril Tasse told AFP. "When we saw the first images, we were like," What is it ?! "It was nothing like what we are used to seeing."
The study enabled more than 200 astronomers from 18 different countries to come together to discover new sources of light that were thought to be far from galaxies.
The data collected on the map is equivalent to 10 million DVDs and represents only two percent of the sky.
The team used a Low Frequency Array (LOFAR) telescope in the Netherlands to find ancient radiation "jets" created during galaxy fusion. These jets can extend over millions of light years. The telescope is so powerful that it can detect light sources that optical instruments can not see.
"Thanks to the radio observations, we can detect the radiations coming from the tenuous medium which exists between the galaxies", said astronomer Amanda Wilber. "LOFAR allows us to detect many more of these sources and to understand what is feeding them."
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This exciting discovery could help scientists better understand black holes. Black holes emit radiation when they swallow matter like stars and the team thinks they can use the new observation technique to compare black holes and see how they change over time.
The team said it would create high-resolution images of the entire northern sky, revealing up to 15 million undetected radio sources.
"The oldest objects in the universe are between 11 and 12 billion years light," said Tasse. "So we will see many more of these objects."
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