Obs. : 2017-04-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.683e+11
Venus      3.676e+11
Earth      3.934e+11
Mars       3.694e+11
Jupiter    3.903e+11
Saturn     3.879e+11
Uranus     3.683e+11
Neptune    3.680e+11
Pluto      3.819e+11