Obs. : 2018-10-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.435e+11
Venus      3.435e+11
Earth      3.574e+11
Mars       3.521e+11
Jupiter    3.465e+11
Saturn     3.492e+11
Uranus     3.575e+11
Neptune    3.534e+11
Pluto      3.503e+11