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'Ghost particle' reveals source of mysterious cosmic rays

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For more than 100 years, scientists have speculated about the origin of high-energy cosmic rays, a rain of charged particles that bombard Earth from space at close to light speed.

Now a global team of hundreds of researchers says it thinks it has tracked down a source of some of the highest-energy cosmic rays: an unusual galaxy called a blazar about four billion light-years from Earth in the constellation Orion. The findings were unveiled at a news conference that is being streamed live online starting 11 a.m. ET.

The researchers found the culprit by using telescopes around the world to follow the trail of a “ghost particle” called a high-energy neutrino that hit a massive underground detector in Antarctica last September.

Such particles “are really

This story was originally published on CBC News. To read the rest of this news worthy story, please visit https://www.cbc.ca/news/technology/neutrinos-icecube-cosmic-rays-1.4742995?cmp=rss.

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