Obs. : 2009-09-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.514e+11
Venus      3.433e+11
Earth      3.472e+11
Mars       3.455e+11
Jupiter    3.505e+11
Saturn     3.514e+11
Uranus     3.447e+11
Neptune    3.472e+11
Pluto      3.607e+11