Moeckel (1990), Moeckel and Sim\'o (1995) proved that, while continuously
changing the masses, a 946-body planar central configuration bifurcates into a
spatial central configuration. We show that this kind of bifurcation does not
occur with 5 bodies. Question 17 in the list Albouy & al (2012) is thus
answered negatively.Comment: 17 pages, 5 figure