They are not really mysteries anymore. If you do some research on them I'm sure you could learn allot, but they are not magick based.
Here's a question back to you, Cloudmage. Did you know that at the center of every galaxy is a giant black hole? All of our stars(including our sun, as it is a star) rotate around that black hole.
no there not rly magick.there just the remains of an imploded gaseous star the size of our sun.once it collapses a black hole forms.not to mention the fact that all laws of space time stop at a black hole.
Black holes are truly amazing things, the fact that once the singularity is reached the laws of physics apply no more, that it "eats", light, space/time and everything else, with very little ever getting away(apart from some hawking radiation lol). Also anthing crossing the event horizon of a black hole, too the observer anyway, will remain there forever.
Another interesting fact about them is that if you ever were to come across a very large one which had a ring singularity, theoretically you could go through the black hole with out ever going near the singularity, thus going through an Einstein-Rosen bridge and ending up gawd knows where.
I have to say these monster were my obsession when i was about 12, I learnt everything i possible could about them and the other cosmological beasts out there, truly fascinating!
They found these stars using the Hubble, somehow they measure it. For example: the heat, the heat can tell you how big they are. At least we're lucky to have a small sun, because bigger stars live only a thousand or millions of years while our sun lives for more then a billion years! By the way, our suns name is the Sol, so that means our solar system is named the Sol.
Our sun is going to last about 10 billion years(half way through its life cycle now, when it dies, it will turn into a reg giant and consume the solar system, too small really to become a black hole naturally.