Obs. : 2009-12-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.669e+11
Venus      3.677e+11
Earth      3.566e+11
Mars       3.578e+11
Jupiter    3.580e+11
Saturn     3.625e+11
Uranus     3.512e+11
Neptune    3.580e+11
Pluto      3.677e+11