| definition |
The varying conditions in space and specifically in the near-Earth environment. Space
weather is chiefly solar driven, resulting from solar activities such as solar flares,
solar wind, and coronal mass ejections that affect magnetosphere, ionosphere, and
thermosphere. Non-solar sources such as Galactic cosmic rays, meteoroids, and space
debris can all be considered as altering space weather conditions at the Earth. Space
weather may affect the performance and reliability of space-borne and ground-based
technological systems and can endanger human life or health. The research in this
field aims at monitoring and diagnosis of space weather conditions and constructing
reliable numerical prediction models.
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