Obs. : 2009-09-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.315e+11
Venus      3.306e+11
Earth      3.555e+11
Mars       3.379e+11
Jupiter    3.574e+11
Saturn     3.315e+11
Uranus     3.538e+11
Neptune    3.574e+11
Pluto      3.643e+11