As the two last planets of the system feel the intensifying heat from the dying sun, its expansion has already engulfed the innermost planets while its core temperature rises to billions of degrees. There are now only days left till the two last planets of this system follow the same fate.
I think this turned out pretty cool, sun texture and nebula was made with apophysis fractals, which is much better than using pictures of clouds or grunge brushes IMO.
Original resolution was 6144*4096px.
EDIT: made the planet smaller and removed the tacky reds inside the sun.