Obs. : 2018-07-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.435e+11
Venus      3.465e+11
Earth      3.504e+11
Mars       3.472e+11
Jupiter    3.532e+11
Saturn     3.504e+11
Uranus     3.503e+11
Neptune    3.435e+11
Pluto      3.497e+11