Obs. : 2016-09-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.870e+11
Venus      3.976e+11
Earth      3.840e+11
Mars       3.995e+11
Jupiter    3.903e+11
Saturn     3.995e+11
Uranus     3.840e+11
Neptune    3.820e+11
Pluto      3.950e+11