Obs. : 2017-08-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.473e+11
Venus      3.516e+11
Earth      3.745e+11
Mars       3.442e+11
Jupiter    3.661e+11
Saturn     3.774e+11
Uranus     3.586e+11
Neptune    3.687e+11
Pluto      3.752e+11