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The display of colors

The colours of a aurora boralis are pink, green, yellow, blue, violet, and occasionally orange and white.

  • When the particles mix with oxygen, yellow and green are produced.
  • When the particles interact with nitrogen, red, violet, and blue colours are produced.
  • Atomic nitrogen causes blue displays.
  • Molecular nitrogen results in purple.
  • Green light typically appears in areas up to 150 miles high, red above 150 miles, blue at up to 60 miles, and purple and violet above 60 miles.

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MORE IDEAS FROM THE SAME ARTICLE

Northern lights occur roughly every eleven years. Record-keeping of the sun's activity began in 1749. Since then, there have been 22 full cycles.

Auroras also occur on planets such as Jupiter, Saturn, Uranus, and Neptune. These gas giants have thick atmospheres and strong magnetic fields. These auroras are a little different from Earth's as they are formed under different conditions.

The magnetic fields of the sun distort and twist as the Earth rotates on its axis. When these fields become knotted together, they create sunspots. Usually, these sunspots occur in pairs.

The best places to see the northern lights are Alaska and northern Canada, Norway, Sweden, and Finland. During periods of particularly active solar flares, the lights can be seen in Scotland and northern England.

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