For right now... let's have look at the Sun*. It's the source of the energy that powers all (well, 99.9%) of life on Earth, and it's a natural fusion reactor that can teach us how to build our own - so it's not surprising that space agencies spend a lot of time studying it.
Yet, for all that studying, it still keeps throwing surprises at us that defy all our theories. Some of those strange phenomena are magnetic highways with huge high speed plasma blobs, strange 'sparkles a thousand kilometres across that flash with incredible temperatures for a fraction of a second (link to news on those here)...
Above: Some of the strange phenomena discovered on the Sun. Courtesy fo UCLAN.
.... and gaping holes in it's atmosphere called 'Coronal holes. Just recently this gigantic coronal hole has opened up on the Sun:
Above: A massive coronal hole. Video courtesy of Space.com.
It's fifty times as wide as the Earth, and like most of the strange holes, is associated with solar winds of hundred (sometimes even thousands) of kilometres a second. It's exposed the solar surface, and you can see how the super heated gas that makes it up flickers and dances as the forces of heat, gravity, and magnetism fight each other.
We have no idea what deeper processes these holes represent, or how they form, so you can be pretty sure NASA, ESA, JAXA, and all the rest will be studying the hell out of this phenomena over the coming weeks...
* Don't actually look at the Sun, especially not through any kind of magnifying device, because your eyeball will get cooked - and I don't mean meterphorically.