  While planet formation is thought to occur early in the history of a
protoplanetary disk, the presence of planets embedded in disks, or of other
processes driving disk evolution, might be traced from their imprints on the
disk structure. We observed the T Tauri star HD 143006, located in the 5-11
Myr-old Upper Sco region, in polarized scattered light with VLT/SPHERE at
near-infrared wavelengths, reaching an angular resolution of ~0.037" (~6 au).
We obtained two datasets, one with a 145 mas diameter coronagraph, and the
other without, enabling us to probe the disk structure down to an angular
separation of ~0.06" (~10 au). In our observations, the disk of HD 143006 is
clearly resolved up to ~0.5" and shows a clear large-scale asymmetry with the
eastern side brighter than the western side. We detect a number of additional
features, including two gaps and a ring. The ring shows an overbrightness at a
position angle (PA) of ~140 deg, extending over a range in position angle of
~60 deg, and two narrow dark regions. The two narrow dark lanes and the overall
large-scale asymmetry are indicative of shadowing effects, likely due to a
misaligned inner disk. We demonstrate the remarkable resemblance between the
scattered light image of HD 143006 and a model prediction of a warped disk due
to an inclined binary companion. The warped disk model, based on the
hydrodynamic simulations combined with 3D radiative transfer calculations,
reproduces all major morphological features. However, it does not account for
the observed overbrightness at PA~140 deg. Shadows have been detected in
several protoplanetary disks, suggesting that misalignment in disks is not
uncommon. However, the origin of the misalignment is not clear.
As-yet-undetected stellar or massive planetary companions could be responsible
for them, and naturally account for the presence of depleted inner cavities.
