Plasma physics, space research, and the origin of the solar system.

@article{Alfvn1971PlasmaPS,
  title={Plasma physics, space research, and the origin of the solar system.},
  author={Hannes Alfv{\'e}n},
  journal={Science},
  year={1971},
  volume={172 3987},
  pages={
          991-4
        }
}
The center of gravity of the physical sciences is always moving. Every new discovery displaces the interest and the emphasis. Equally important is that new technological developments open new fields for scientific investigation. To a considerable extent the way science takes depends on the construction of new instruments as is evident from the history of science. For example after the development of classical mechanics and electromagnetism during the 19th century, a new era was started by the… 
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