Obs. : 2019-02-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.503e+11
Venus      3.547e+11
Earth      3.540e+11
Mars       3.431e+11
Jupiter    3.533e+11
Saturn     3.547e+11
Uranus     3.439e+11
Neptune    3.503e+11
Pluto      3.547e+11