According to new observations, however, from NASA's IMAGE spacecraft and the joint NASA/European Space Agency Cluster satellites, immense cracks sometimes develop in Earth's magnetosphere and remain open for hours. This allows the solar wind to gush through and power stormy space weather.
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"We've discovered that our magnetic shield is drafty, like a house with a window stuck open during a storm," says Harald Frey of the University of California, Berkeley, lead author of a paper on this research published Dec. 4 in Nature. "The house deflects most of the storm, but the couch is ruined. Similarly, our magnetic shield takes the brunt of space storms, but some energy slips through its cracks, sometimes enough to cause problems with satellites, radio communication, and power systems."
In the new observations, the Imager for Magnetopause to Aurora Global Exploration (IMAGE) satellite revealed an area almost the size of California in the arctic upper atmosphere where a 75-megawatt "proton aurora" flared for hours. A proton aurora is a form of Northern Lights caused by heavy solar ions striking Earth's upper atmosphere, causing it to emit ultraviolet light--invisible to the human eye but detectable by the Far Ultraviolet Imager on IMAGE. While this aurora was being recorded by IMAGE, the 4-satellite Cluster constellation flew far above IMAGE, directly through the crack, and detected solar wind ions streaming through it.
Fortunately, these cracks don't expose Earth's surface to the solar wind. Our atmosphere protects us, even when our magnetic field doesn't. The effects of solar storms are felt mainly in the high upper atmosphere and the region of space around Earth where satellites orbit.
When you use a satellite connection, the experience is different than sending or receiving a message via cellular. In ideal conditions with a direct view of the sky and the horizon, a message might take 15 seconds to send, and over a minute to send under trees with light or medium foliage. If you're under heavy foliage or surrounded by other obstructions, you might not be able to connect to a satellite. Connection times can also be impacted by your surroundings, the length of your message, and the status and availability of the satellite network.
Alternatively, if DNS is not available, statically configure local DNS to IP mapping (based on local DNS resolution on your end-device) or replace DNS name in call-home configuration with IP address. Refer to example for direct cloud access (for Cisco Smart Software Manager satellite use its own DNS name instead of tools.cisco.com):
For customers who, either for policy or network reachability reasons, do not want to manage their Cisco products directly using Cisco Smart Software Manager residing at software.cisco.com, they can choose to install Cisco Smart Software Manager satellite on-premises. Devices or software product are registered and report license consumption to the Smart Software Manager satellite as though it were a replicate of the Cisco Smart Software Manager hosted within the customers premises. 2ff7e9595c
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