In 1911, 40-year-old Ernest Rutherford discovered the nucleus of the atom.
That is the usual, simple, factual statement most science students know quite well.
The story of this discovery, however, involves more than one person,
research over several decades, and a very human story.

Young Rutherford Exploring Radioactivity Alpha Particles and the Atom
Atop the Physics Wave Rutherford's Nuclear Family