Universe’s missing half: What is antimatter and why it matters

[ad_1] In 1930, theoretical physicist Paul Dirac was trying to reconcile quantum mechanics with Einstein’s theory of relativity when his equations hinted at something strange: the existence of a “mirror” particle identical to the electron, but with opposite charge. Its implications made him uneasy  — that every particle has an antiparticle, and that perhaps the […]

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Dark matter mystery: Why there is no light yet after decades of search

[ad_1] In 1933, Swiss astrophysicist Fritz Zwicky was observing the Coma Cluster — a massive congregation of galaxies about 300 million light-years away — when he noticed something odd. The galaxies were swirling around each other far too fast. According to the visible matter in the cluster, they should have flown apart long ago. “There […]

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Scientists use NASA’s Fermi data to find source of extreme high-energy cosmic particles

[ad_1] Thanks to a study that used 12 years of data from NASA’s Fermi Gamma-ray Space Telescope, scientists are finally getting close to accurately identifying PeVatrons, the source of some of the highest energy particles that whip across our galaxy. The study has been documented in a research article published in Physical Review Letters. Streams […]

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Dark matter: An invisible glue that may not even exist

[ad_1] It has never been detected, only speculated. But scientists estimate that up to 85% of the matter in the universe could be made of what’s called dark matter. Scientists cannot define dark matter with any certainty, but that hasn’t stopped the search for it. Our largest and newest space-based telescope, the James Webb Space […]

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