Obs. : 2017-06-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.670e+11
Venus      3.681e+11
Earth      3.763e+11
Mars       3.643e+11
Jupiter    3.802e+11
Saturn     3.738e+11
Uranus     3.681e+11
Neptune    3.621e+11
Pluto      3.692e+11