A more than 450,000 km from end-to-end, dark solar filament of magnetism is currently growing on the sun since August 31, 2016.
This giant filament is held above the surface of the sun by magnetic lines of force. The collapse of this unstable structure could produce an Earth directed ‘Hyder flare’ explosion.
But it is only now that space agencies are starting to speak about it. It has indeed reached a mega-size of more than 450,000km in length.
And again here on September 4, 2016:
Is it going to trigger a ‘Hyder Flare’ – a flare that occurs away from an active region or sunspot group and that is associated with the sudden disappearance of a dark filament?
The following pictures show the filament as it had just formed on August 31, 2016 and September 1, 2016.
The giant filament exploded on September 6, 2016 as shown on this gif video: