Space weather is a general term describing conditions in space that affect the Earth and our technological systems. Geomagnetic storms, which can not only cripple the electrical grid but also corrode oil and gas pipelines, are only one aspect of space weather.
Solar flares can disrupt radio communication, aviation communication, and navigation, and they can interfere with the GPS signals used in our positioning and timing technologies.
One perhaps under-addressed risk is a cascading interruption in energy supply. Even a short-term electrical power outage can create a shortage in oil supply because oil refineries depend on electrical power from the grid. A refinery can take up to several days to recover from an electric power outage.
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