Look at this giant filament over the sun!
It is stretching an amazing 700,000 km across the solar disk. And if you want it in 3D, just cross your eyes:
This picture was taken by Paco Bellido on May 27, 2015 in Cordoba, Spain.
As Space Weather writes:
[quote_box_center]Giant filaments like this one are often unstable. They can erupt, hurling parts of themselves into space. Also, fragments falling back to the stellar surface explode, producing a type of flare called a “Hyder flare.” No sunspots are required for this kind of solar activity.[/quote_box_center]
So is the next big Hyder flare around?