Obs. : 2008-09-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.523e+11
Venus      3.523e+11
Earth      3.460e+11
Mars       3.523e+11
Jupiter    3.518e+11
Saturn     3.475e+11
Uranus     3.447e+11
Neptune    3.482e+11
Pluto      3.539e+11