Obs. : 2017-11-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.729e+11
Venus      3.752e+11
Earth      3.630e+11
Mars       3.783e+11
Jupiter    3.764e+11
Saturn     3.729e+11
Uranus     3.611e+11
Neptune    3.660e+11
Pluto      3.728e+11