Obs. : 2017-07-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.601e+11
Venus      3.567e+11
Earth      3.598e+11
Mars       3.588e+11
Jupiter    3.741e+11
Saturn     3.598e+11
Uranus     3.511e+11
Neptune    3.447e+11
Pluto      3.520e+11