Obs. : 2013-09-11
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.931e+11
Venus      3.894e+11
Earth      4.055e+11
Mars       3.970e+11
Jupiter    3.935e+11
Saturn     3.888e+11
Uranus     3.976e+11
Neptune    4.055e+11
Pluto      4.006e+11