Jets are narrow
streams of gas that emergefrom the cores
of some galaxies, travel at more than 99 percent thespeed
of light, and penetrate as much as several million light - yearsinto intergalactic space before fanning
out into broad, luminous lobes.How might a
black -
hole whirlpool generate such a pair
of waterspouts?Swirling bundles
of magnetic field lines, flinging particles outwardfrom the poles
of the
hole, provide a natural explanation.