Obs. : 2015-04-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.513e+11
Venus      4.465e+11
Earth      4.950e+11
Mars       4.505e+11
Jupiter    4.379e+11
Saturn     5.020e+11
Uranus     4.570e+11
Neptune    4.660e+11
Pluto      4.949e+11