The sun is growing quiet as all three Earrthside sunspots decay. Nevertheless, there is some action on the sun's western horizon. Rogerio Marcon sends this picture from his backyard observatory in Campinas SP Brasil:
"The remains of sunspot 1254 are visible in the foreground," says Marcon. "But what really caught my eye was the big prominence rising above the limb."
Prominences are clouds of plasma held aloft by solar magnetic fields. Current images from the Solar Dynamics Observatory suggest that this one could be unstable. Readers with solar telescopes are encouraged to monitor developments.
Provided by Space Weather News
