Reading progress update: I've read 60 out of 424 pages.

Magnetotails in the Solar System (Geophysical Monograph Series) - Peter Delamere, Caitr?ona Jackman, Andreas Keiling

Chapter 3: Mars and Venus. Neither planet has a strong intrinsic magnetic field, in contrast to the other planets. Nevertheless a magnetotail forms and appears to experience magnetic reconnection/substorms in both cases.