Obs. : 2012-09-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.913e+11
Venus      4.431e+11
Earth      4.579e+11
Mars       3.922e+11
Jupiter    4.726e+11
Saturn     3.858e+11
Uranus     4.579e+11
Neptune    4.430e+11
Pluto      4.071e+11