Immense jets are often ejected from young stars.They are generally ejected in what direction?
A) Parallel to the accretion disk
B) Perpendicular to the accretion disk
C) Either parallel or perpendicular to the accretion disk
D) There is no preferred direction for the jets.

Question

Quizplus · Accepted Answer

Immense jets are usually ejected perpendicular to the accretion disk. This is because the disk is rotating and so the material in the disk has angular momentum. The material in the disk can't simply fall directly onto the star; instead, it spirals inward along the magnetic field lines. The magnetic field lines are twisted up by the rotating disk, so they can get quite strong. In the end, the magnetic field lines get strong enough to channel some of the material in the disk out into space. The material escapes along the magnetic field lines and is ejected in the form of a jet, perpendicular to the disk.

Immense Jets Are Often Ejected from Young Stars