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The South Atlantic Anomaly (SAA) is an area where Earth's inner Van Allen radiation belt comes closest to Earth's surface, dipping down to an altitude of 200 kilometres (120 mi). This leads to an increased flux of energetic particles in this region and exposes orbiting satellites (including the ISS ) to higher-than-usual levels of ionizing ...
Unfortunately, the X-17's limited altitude capability meant it could not reach the required altitude to hit mirror points in the South Pacific over the testing grounds. The only area that had a field low enough for the X-17 to hit easily was the South Atlantic Anomaly, where the Van Allen Belt descends as low as 200 kilometers (660,000 ft). [20]
In October 1984, a National Intelligence Estimate on the South African nuclear program noted: There is still considerable disagreement within the Intelligence Community as to whether the flash in the South Atlantic detected by a US [redacted] satellite in September 1979 was a nuclear test, and if so, by South Africa. If the latter, the need for ...
The magnetic 'weak point' over the ocean has existed for up to 11 million years, according to researchers.
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Operation Argus was a series of United States low-yield, high-altitude nuclear weapons tests and missile tests secretly conducted from 27 August to 9 September 1958 over the South Atlantic Ocean.
UoSAT-2, which is also known as UO-11 and OSCAR-11, is a British satellite orbiting in Low Earth Orbit.The satellite functions as an amateur radio transmitter (known as an OSCAR) and was built at the University of Surrey.
[63] [64] The primary mission of the SyncFusion system was achieved on February 20, 2025, when the SAR successfully acquired and processed imagery in the South Atlantic Anomaly under elevated radiation exposure. The thermal insulation systems operated at -10°C. Another test was scheduled for 150°C. [65] [66]