It’s #SunDay! Here’s your space weather report for Oct. 9-15:
•3 M-class flares
•0 C-class flares
•19 coronal mass ejections
•1 geomagnetic storm
This video from NASA’s Solar Dynamics Observatory shows the week’s activity. After the Oct. 10 geomagnetic storm, which led to aurora sightings across northern Europe, Canada, and the northeastern United States, it was a relatively calm week on the Sun.
The Moon makes a special guest appearance in this week’s video beginning at about 0:36. Note the sharp outline of the Moon’s edge. That’s because the Moon has almost no atmosphere to scatter sunlight.
At about 2:30, we also see a calibration maneuver, which the spacecraft performs periodically to account for changes in its instruments’ optics over time.
More about solar activity: https://t.co/GRxOaTcMdD
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