Obs. : 2018-09-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.000e+11
Venus      4.039e+11
Earth      4.087e+11
Mars       4.062e+11
Jupiter    4.098e+11
Saturn     4.073e+11
Uranus     4.100e+11
Neptune    4.080e+11
Pluto      4.031e+11