Task: Text Categorization
Input (English): A hypothetical method of decay for these particles involves breaking into a positron and a neutral pion and would have a half-life on the order of 10 to the 35 years. In astronomy, these particles are employed in a namesake chain located in the cores of stars in order to synthesis lighter elements. Particles of this type are typically composed of two up quarks and a single down quark and these particles make up about 90% of all cosmic rays. Discovered by Ernest Rutherford, for 10 points, identify this subatomic particles that contributes the positive charge of an atoms nucleus.
Output (English): Science