The Earth rotates  around its polar axis and orbits around the Sun: the sky above us (the celestial sphere) is in constant apparent motion. Stellarium is the
perfect tool to demonstrate the motions of the sky, the use of
coordinates and to illustrate constellations.

Contact: G. Iafrate, iafrate at oats.inaf.it



  en (master): 2014-01-24
  de: 2010-06-14
  it: 2014-01-24
  nl: 2010-03-09 
  pt: 2014-01-24