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2026
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Source-derived question
Why does the universe appear to be made almost entirely of matter rather than an equal mix of matter and antimatter?
Antimatter
Sources that address it
Nobel Prize in Physics
almanac
Related questions
How did Carl Anderson confirm the positron experimentally in 1932?
How did Carl Anderson recognize the positron from the way its track curved in a cloud chamber?
How did Dirac's equation predict the existence of a particle with the electron's mass but opposite charge?
How did Segrè and Chamberlain use the Bevatron to distinguish antiprotons from the flood of ordinary collision debris?
How did Segrè, Chamberlain, Wiegand, and Ypsilantis distinguish rare antiprotons from the far more common pions in the Bevatron's output?
How did the curvature of a cloud chamber track reveal that Anderson had found a positively charged, lightweight particle?
How does stochastic cooling let physicists corral a chaotic beam of antiprotons without touching any individual particle?
How many years passed between Dirac's mathematical prediction and Carl Anderson's experimental discovery of the positron?