Obs. : 2017-03-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.560e+11
Venus      3.568e+11
Earth      3.685e+11
Mars       3.549e+11
Jupiter    3.685e+11
Saturn     3.610e+11
Uranus     3.560e+11
Neptune    3.567e+11
Pluto      3.573e+11