Obs. : 2013-04-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.487e+11
Venus      4.606e+11
Earth      4.616e+11
Mars       4.487e+11
Jupiter    4.865e+11
Saturn     4.828e+11
Uranus     4.508e+11
Neptune    4.305e+11
Pluto      4.361e+11