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The Atom Breaks Up
Smashing the Atom
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000 million a-particle accelerated Andromeda nebula astronomers atmosphere atomic number atomic weights beam binding energy calculated carbon centre charged particles chemical cloud clusters collision cosmic rays crystal decay density deuterium diameter discovery disintegration distance earth electric electron-volts electrons elementary particles elements emission emitted example existence explosive fact fission force galaxies globular clusters gravitational helium hydrogen hypothesis interstellar isotope Jupiter known large number laser laws light light-years magnetic field magnitude mass number mathematical matter meteorite Milky molecules motion nature neutrino neutrons nuclear nuclear reaction nucleons nucleus nuclides observed occur orbit physicists physics planets Plate positively charged positron possible potential produced properties protons pulsar quantum radiation radio galaxies radioactive reaction reactors red-shifts regions relative result rotation solar system solid space spectra spectrum spiral stars stellar structure sun's surface telescope temperature theory thousand tion tritium universe uranium velocity wavelength waves y-rays