One difficulty in using a
jet as an x-ray of the quark - gluon
plasma is the fact that a quark - gluon
plasma is a rapidly expanding ball of fire — it doesn't sit still.
These are spicules, and despite their abundance, scientists didn't understand how these
jets of
plasma form nor
did they influence the heating of the outer layers of the sun's atmosphere or the solar wind.
Even protostars — these are young stars that are just forming and making their own planetary disks and so on — they make very powerful outflows called, the same sort of
jets obviously moving at slower speeds, but they are full of
plasma, that is flowing out at high speed; white dwarfs, neutron stars, black holes big and small, they seem able to
do this task, it really seems to be a very common phenomenon.