Obs. : 2018-07-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.448e+11
Venus      3.484e+11
Earth      3.598e+11
Mars       3.557e+11
Jupiter    3.648e+11
Saturn     3.598e+11
Uranus     3.484e+11
Neptune    3.514e+11
Pluto      3.590e+11