Obs. : 2018-09-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.530e+11
Venus      3.582e+11
Earth      3.630e+11
Mars       3.604e+11
Jupiter    3.602e+11
Saturn     3.610e+11
Uranus     3.643e+11
Neptune    3.594e+11
Pluto      3.591e+11