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Top: Science: Physics: Particle: Astro_Particle
Study of elementary particles of astronomical origin.
Fast, relativistic particles (protons, electrons, nuclei, gamma rays, ...) coming from space.
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By observing galactic motions and from cosmology we know that there is a mass in the Universe that we cannot observe so far. It is called dark matter, as opposed to bright stars. It could be some kind of elementary particles.
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