  The study of strong electron correlations in transition metal oxides with
modern microscopy and diffraction techniques unveiled a fascinating world of
nanosize textures in the spin, charge, and crystal structure. Examples range
from high $T_c$ superconducting cuprates and nickelates, to hole doped
manganites and cobaltites. However, in many cases the appearance of these
textures is accompanied with "glassiness" and multiscale/multiphase effects,
which complicate significantly their experimental verification. Here, we
demonstrate how nuclear magnetic resonance may be uniquely used to probe
nanosize orbital textures in magnetic transition metal oxides. As a convincing
example we show for the first time the detection of nanoscale orbital phase
separation in the ground state of the ferromagnetic insulator
La$_{0.875}$Sr$_{0.125}$MnO$_3$.
