Testing cosmic isotropy with galaxies position angles distribution
  We analyse the distribution of position angles of 1 million galaxies from the
Hyperleda catalogue, a sample that presents the galaxies coordinates in the
celestial sphere, information that allows us to look for a possible privileged
direction. Our analysis involves different tests and statistical methods, from
which it is possible to infer with high probability ($p$-value extremely low)
that the galactic planes are not randomly oriented in the sky. Whether this is
an evidence of a cosmological anisotropy or an observational bias due to local
effects is something deserving further studies.
