| A typical example of how both missions will co-operate is the study of the magnetic substorms producing the bright aurorae. |
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| On Earth, UV and radio aurorae are more frequent around 22-24h Local Time, while more around 8-12h in the case of Saturn. |
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| On Earth, aurorae are caused by the interaction of solar wind particles with the planet's magnetic field. |
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| Low: Low intensity aurorae consisting mostly of diffuse, dim, and lifeless activity. |
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| Moderate activity may include beams or rays of aurorae which travel either east or west with time. |
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| High activity is generally confined to curtain aurorae and moderate-intensity pulsating aurorae. |
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| No colour fluctuations or significant brightening aurorae are associated with moderate intensities. |
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| Zenith aurorae may become exceedingly bright and colourful. |
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| The multiple manifestations of the magnetic Sun are able to affect the terrestrial environment by their influence on aurorae or by their role in massive electrical perturbations. |
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| Very High: Very high intensity auroral activity is usually only experienced over the high latitude regions where zenith aurorae and significant auroral displays occur. |
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| Curtain aurorae may change form and colour rapidly. |
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| These events create brilliant aurorae but can also interfere with terrestrial radar and communication networks, sometimes causing severe power grid outages at unpredictable times. |
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| Spectra of aurorae largely comprise emission lines from N and O ions excited by various energetic particles entering the upper atmosphere. |
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| It induced currents strong enough to short out telegraph lines, and aurorae were reported as far south as Hawaii. |
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| Frequently, the Earth's magnetosphere is hit by solar flares causing geomagnetic storms, provoking displays of aurorae. |
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| In our own solar system, the solar wind is responsible for shaping comets' tails and producing the Aurorae Borealis on Earth. |
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| About 15 years ago, I had to do a week of late shifts as a Computer Operator and it was during a possibly visible Aurorae. |
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| Aurorae are caused by cosmic rays, solar wind and magnetospheric plasma interacting with the upper atmosphere. |
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