protons over brazil
MISR Shows South Atlantic Anomaly
The South Atlantic Anomaly (SAA). Even before the cover opened, the Multi-angle Imaging SpectroRadiometer (MISR) instrument aboard NASA’s Terra spacecraft began making scientific measurements. The MISR cameras, designed to detect visible light, are also sensitive to energetic protons in Earth’s upper atmosphere. With the cover closed, background levels of protons stand out.
via spiceee
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