Hi there,
Energy from matter is there to be observed when radioactive material decays but I think I'm right in stating, that it wasn't until 1997 that anyone managed to achieve the reverse process, in a cyclotron.
There's lots of exciting observational data appearing about black holes right now. Reading the theory about bh's, it seems you have all of the necessary conditions for the creation of matter from energy. While there's much talk about the production of energy from the shredding of stars and such, nobody is talking about the creation of matter from energy. Can someone kindly tell me what I'm missing about black holes?
Cheers☺