Obs. : 2008-05-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.536e+11
Venus      3.526e+11
Earth      3.410e+11
Mars       3.544e+11
Jupiter    3.394e+11
Saturn     3.546e+11
Uranus     3.465e+11
Neptune    3.417e+11
Pluto      3.410e+11