Obs. : 2018-04-02
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.478e+11
Venus      3.403e+11
Earth      3.435e+11
Mars       3.472e+11
Jupiter    3.461e+11
Saturn     3.472e+11
Uranus     3.417e+11
Neptune    3.486e+11
Pluto      3.473e+11