Obs. : 2019-07-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.431e+11
Venus      3.422e+11
Earth      3.473e+11
Mars       3.490e+11
Jupiter    3.492e+11
Saturn     3.446e+11
Uranus     3.437e+11
Neptune    3.367e+11
Pluto      3.426e+11