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Dark matter existed before the Big Bang, per Johns Hopkins study

Photo: Hubble Space Telescope/NASA

Scientists have always believed dark matter—80% of the universe’s mass—is a “leftover substance from the Big Bang,” Science Daily says. But a new Johns Hopkins study says it actually existed before the Big Bang event.

“If dark matter were truly a remnant of the Big Bang, then…researchers should have seen a direct signal of dark matter in different particle physics experiments already,” says the study’s author, Tommi Tenkanen, a postdoctoral fellow in Physics and Astronomy.

Using a new simple math, Tenkanen’s study shows dark matter was likely created before the Big Bang in the “cosmic inflation” era, when space expanded rapidly.

The mystery of what dark matter really is and how it came into existence has confounded scientists. Now they have one more piece of the puzzle in place.

More at Science Daily

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