SOLAR FILAMENT: The sun may be spotless today, but it certainly is not blank. A long dark magnetic filament is looping around the northeastern limb, stretching almost 100,000 km from end to end:

Long, bushy filaments like this have been known to grow unstable and erupt, producing a type of spotless flare called a "Hyder flare." If that happens now, Earth would likely feel some effects from the blast because the filament is turning to face our planet. Readers with solar telescopes are encouraged to monitor developments.

[link to spaceweather.com]