Obs. : 2017-04-11
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.910e+11
Venus      3.977e+11
Earth      3.699e+11
Mars       3.687e+11
Jupiter    3.678e+11
Saturn     3.764e+11
Uranus     3.910e+11
Neptune    3.930e+11
Pluto      3.781e+11