Obs. : 2018-04-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.585e+11
Venus      3.530e+11
Earth      3.575e+11
Mars       3.523e+11
Jupiter    3.570e+11
Saturn     3.523e+11
Uranus     3.542e+11
Neptune    3.543e+11
Pluto      3.529e+11