Obs. : 2011-04-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.512e+11
Venus      4.365e+11
Earth      4.271e+11
Mars       4.512e+11
Jupiter    4.710e+11
Saturn     4.477e+11
Uranus     4.365e+11
Neptune    4.075e+11
Pluto      3.947e+11