Obs. : 2008-10-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.477e+11
Venus      3.614e+11
Earth      3.460e+11
Mars       3.563e+11
Jupiter    3.586e+11
Saturn     3.444e+11
Uranus     3.464e+11
Neptune    3.503e+11
Pluto      3.608e+11