Obs. : 2018-12-02
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.425e+11
Venus      3.368e+11
Earth      3.450e+11
Mars       3.494e+11
Jupiter    3.425e+11
Saturn     3.522e+11
Uranus     3.433e+11
Neptune    3.494e+11
Pluto      3.539e+11