Scientists have been trying for decades to better understand and detect the nature of dark matter, which could help them figure out how galaxies first formed.
"We don't know much about dark matter," said Stefan Funk, a particle astrophysicist at Stanford University.
Unlike the visible matter in the universe, dark matter can't be seen and it's exceptionally hard to detect. It moves slowly, carries little energy and interacts very little with the stuff around it. But scientists do know that when a piece of dark matter is destroyed, the resulting burst includes a stream of high-energy particles.
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