this post was submitted on 16 Jul 2023
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An increase in surface activity is expected because our Sun is approaching solar maximum in 2025. However, last month our Sun sprouted more sunspots than in any month during the entire previous 11-year solar cycle -- and even dating back to 2002. The featured picture is a composite of images taken every day from January to June by NASA's Solar Dynamic Observatory. Showing a high abundance of sunspots, large individual spots can be tracked across the Sun's disk, left to right, over about two weeks. As a solar cycle continues, sunspots typically appear closer to the equator. Sunspots are just one way that our Sun displays surface activity -- another is flares and coronal mass ejections (CMEs) that expel particles out into the Solar System. Since these particles can affect astronauts and electronics, tracking surface disturbances is of more than aesthetic value. Conversely, solar activity can have very high aesthetic value -- in the Earth's atmosphere when they trigger aurora.

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[โ€“] [email protected] 11 points 1 year ago (1 children)

Wow this is really neat, I didn't realize sun spots occur in bands like this. I always assumed they occur across the whole surface

[โ€“] [email protected] 7 points 1 year ago

They don't, they're the same spots overlayed over time. What you're seeing is each spots parambulation around the sun which makes a banding pattern when all together, think of it like each spots orbit.