  A key prediction of turbulence theories is frame-invariance, and in
magnetohydrodynamic (MHD) turbulence, axisymmetry of fluctuations with respect
to the background magnetic field. Paradoxically the power in fluctuations in
the turbulent solar wind are observed to be ordered with respect to the bulk
macroscopic flow as well as the background magnetic field. Here, non-
axisymmetry across the inertial and dissipation ranges is quantified using
in-situ observations from Cluster. The observed inertial range non- axisymmetry
is reproduced by a 'fly through' sampling of a Direct Numerical Simulation of
MHD turbulence. Furthermore, 'fly through' sampling of a linear superposition
of transverse waves with axisymmetric fluctuations generates the trend in non-
axisymmetry with power spectral exponent. The observed non-axisymmetric
anisotropy may thus simply arise as a sampling effect related to Taylor's
hypothesis and is not related to the plasma dynamics itself.
