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Text File  |  1992-09-01  |  312b  |  9 lines
  1. In astronomy, short-lived jets of hot gas in
  2. the upper chromosphere of the Sun. Spiky in
  3. appearance, they move at high velocities
  4. along lines of magnetic force to which they
  5. owe their shapes. Spicules are usually seen
  6. to form at about 45 degrees to the vertical,
  7. and appear to disperse material into the
  8. corona.
  9.