Obs. : 2016-07-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.030e+11
Venus      4.094e+11
Earth      3.776e+11
Mars       3.872e+11
Jupiter    3.933e+11
Saturn     3.843e+11
Uranus     3.940e+11
Neptune    3.713e+11
Pluto      3.776e+11