Obs. : 2016-10-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.110e+11
Venus      3.875e+11
Earth      3.823e+11
Mars       3.965e+11
Jupiter    4.141e+11
Saturn     3.958e+11
Uranus     3.942e+11
Neptune    3.975e+11
Pluto      3.965e+11