Obs. : 2013-04-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.618e+11
Venus      4.401e+11
Earth      4.115e+11
Mars       4.401e+11
Jupiter    4.091e+11
Saturn     4.083e+11
Uranus     4.618e+11
Neptune    4.769e+11
Pluto      4.337e+11