Physical Sciences February 2019

Alien Civilizations galaxies clusters

Physical Sciences for January & February 2019 (73aH*):
   – A third of galaxies clusters unobserved,
   – Earth’s exposed continental crust comprises TTG,
   – A ring-shaped device changes symetry and polarization of light,
   – About geocorona, a part of Earth’s exosphere,
   – Hidden galaxies in a tiny corner of the sky