Obs. : 2015-09-02
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.999e+11
Venus      4.087e+11
Earth      4.206e+11
Mars       4.087e+11
Jupiter    3.995e+11
Saturn     4.143e+11
Uranus     4.226e+11
Neptune    4.206e+11
Pluto      4.163e+11