3 ms·
"Over the last 200 years, the magnetic field has lost around 9% of its strength on a global average. A large region of reduced magnetic intensity has developed
by trail-system 6y ago
"Over the last 200 years, the magnetic field has lost around 9% of its strength on a global average. A large region of reduced magnetic intensity has developed between Africa and South America and is known as the South Atlantic Anomaly."
The South Atlantic Anomaly is interesting. In past years satellites are being made to shutdown while passing the regions to avoid damage from the lack of protection from harmful particles.
- tboerstad 6y agoFascinating information, today I learned. Out of curiosity, do you work in the industry?
- deleted 6y ago[deleted]
- JshWright 6y agoI'm not the commenter you're repling to, but personally I think I originally learned about the SAA from a Scott Manley video.
- iso947 6y agoI suspect this one, explaining the various parts of mission control https://youtu.be/6zFAme3SQAo https://youtu.be/6zFAme3SQAo
- cuSetanta 6y agoNot the original commenter but I am in the industry, and its true, many satellites shut down during this region over the South Atlantic. For that reason, it is not a popular orbit unless there is a larger driver behind the selection. For example the ISS goes right through it in order to be above Russia for a reasonable portion of its orbit. I believe Astronauts have reported increases in optical flashes during this part of the orbit as more energetic particles pass through their eyes.
- trail-system 6y agoI'm not in the industry. Just a fan of anomalies.
- hawski 6y agoLink for the lazy: https://en.wikipedia.org/wiki/South_Atlantic_Anomaly https://en.wikipedia.org/wiki/South_Atlantic_Anomaly It seems to cover almost whole South America.
- koheripbal 6y agoIt's interesting - I wonder if there are more transient and localized magnetic anomalies?