Obs. : 2018-11-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.588e+11
Venus      3.539e+11
Earth      3.600e+11
Mars       3.610e+11
Jupiter    3.588e+11
Saturn     3.617e+11
Uranus     3.600e+11
Neptune    3.612e+11
Pluto      3.619e+11