Obs. : 2019-07-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.473e+11
Venus      3.480e+11
Earth      3.500e+11
Mars       3.523e+11
Jupiter    3.523e+11
Saturn     3.490e+11
Uranus     3.437e+11
Neptune    3.411e+11
Pluto      3.490e+11