Obs. : 2016-10-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.924e+11
Venus      3.887e+11
Earth      4.080e+11
Mars       3.926e+11
Jupiter    4.016e+11
Saturn     3.887e+11
Uranus     4.049e+11
Neptune    3.998e+11
Pluto      3.904e+11