Obs. : 2017-08-02
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.465e+11
Venus      3.470e+11
Earth      3.648e+11
Mars       3.420e+11
Jupiter    3.751e+11
Saturn     3.715e+11
Uranus     3.485e+11
Neptune    3.529e+11
Pluto      3.648e+11